Relevant bibliographies by topics / Fundamental frequency

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fundamental frequency'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Fundamental frequency.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Fundamental frequency"

1

Crozier, M. J., and T. Glade. "Frequency and magnitude of landsliding: fundamental research issues." Zeitschrift für Geomorphologie Supplement Volumes 115 (July 1, 1999): 141–55. http://dx.doi.org/10.1127/zfgsuppl/115/1999/141.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Brinn, Ira Mark. "Fundamental vibrational frequency correlation." Journal of Molecular Structure 145, no. 3-4 (1986): 257–60. http://dx.doi.org/10.1016/0022-2860(86)85029-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Brinn, Ira M. "Fundamental vibrational frequency correlation." Journal of Molecular Structure 176 (May 1988): 223–37. http://dx.doi.org/10.1016/0022-2860(88)80243-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bauer, Harold R. "Frequency Code: Orofacial Correlates of Fundamental Frequency." Phonetica 44, no. 3 (1987): 173–91. http://dx.doi.org/10.1159/000261793.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Carlyon, Robert P., Laurent Demany, and Catherine Semal. "Detection of across‐frequency differences in fundamental frequency." Journal of the Acoustical Society of America 91, no. 1 (1992): 279–92. http://dx.doi.org/10.1121/1.402770.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Qiu, Lunji, Haiyun Yang, and Soo-Ngee Koh. "Fundamental frequency determination based on instantaneous frequency estimation." Signal Processing 44, no. 2 (1995): 233–41. http://dx.doi.org/10.1016/0165-1684(95)00027-b.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mueller, Peter B., and An Xue. "Variability of fundamental frequency measures." Logopedics Phoniatrics Vocology 21, no. 1 (1996): 64–67. http://dx.doi.org/10.3109/14015439609099205.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

de Cheveigné, Alain. "Two-voice fundamental frequency estimation." Journal of the Acoustical Society of America 111, no. 5 (2002): 2446. http://dx.doi.org/10.1121/1.4778425.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Sward, Johan, Hongbin Li, and Andreas Jakobsson. "Off-Grid Fundamental Frequency Estimation." IEEE/ACM Transactions on Audio, Speech, and Language Processing 26, no. 2 (2018): 296–303. http://dx.doi.org/10.1109/taslp.2017.2775800.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Karnell, Michael. "Fundamental Frequency and Perturbation Measurement." Seminars in Speech and Language 12, no. 02 (1991): 88–97. http://dx.doi.org/10.1055/s-2008-1064212.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Fundamental frequency"

1

Xiao, Chucheng. "An Investigation of Fundamental Frequency Limitations for HF/VHF Power Conversion." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28393.

Full text
Abstract:
The volume reduction in power converters over the past several decades can chiefly be attributed to increases in switching frequency. It is to be expected that the trends towards miniaturization will maintain steady pressure to keep this pace of increasing switching frequencies of power converters. However certain fundamental limits in high frequency power conversion are being reached as frequencies are being pushed deeper into the megahertz range, inhibiting substantial further increases. The work reported in this dissertation is intended to systematically investigate the fundamental frequency limitations, identify some of the solutions for HF/VHF power conversion and to provide guidelines and tools to optimize the performance of power converters by maximizing frequency. A number of multi-megahertz power converters are examined to evaluate the present status and future trend of HF/VHF power conversion. An interesting trend between power level and frequency is observed. A general limitation about the power level and frequency, independent of design details, is derived from the physics of the semiconductor devices, which determines the upper bound of the power levels as frequency increases. A 250 MHz DC-DC power converter (derived from the Class E power amplifier) is analyzed and demonstrated with discrete components, which again verifies the trend between power level and frequency. The power losses in the semiconductor devices are discussed, and optimization criteria for minimizing the power losses of the devices, are discussed. By relating the power losses to the semiconductor materials' properties, a methodology for selecting proper materials is identified for high frequency and high efficiency power conversion. The frequency scaling effects of passive components, still dominating the volume of the modern power converter, is analyzed. A generic multi-disciplinary methodology is developed to analyze and maximize frequency and performance of passive components in terms of power density and efficiency. It is demonstrated how the optimum frequency can be identified, and how power conversion efficiency deteriorates beyond this optimum under a fixed maximum temperature. Power loss measurement is becoming more challenging as higher frequency and higher efficiency power conversion. To achieve an accurate power loss measurement in a high frequency, high efficiency power electronics system or component, limitations of electrical measurement are identified, and various calorimetric methods are surveyed. Calorimetric methods are more accurate due to the direct heat loss measurement. An advanced calorimetric system is proposed, analyzed, and tested, demonstrating about 5% error in total losses up to 25W.<br>Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
2

Marklund, Ellen. "Fundamental frequency as basis for speech segmentation modeling." Thesis, Stockholms universitet, Avdelningen för fonetik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-64755.

Full text
Abstract:
The present study investigates the relevance of fundamental frequency in speech segmentation models intended to simulate infants. Speech from three different conditions (infant-directed speech to 3- and 12-month-olds, and adult-directed speech) was segmented based on fundamental frequency information, using a variant of the dpn-gram segmenting technique (highlighting similar segments as lexical candidates). The spectral distance between segments that were found based on fundamental frequency similarity was calculated, and compared to the spectral distance between segments that were found using transcription as basis for segmentation, as well as to the spectral distance between randomly paired segments from the same speech materials. The results show the greatest within-condition difference in speech directed to 3-month-olds, in which segmenting based on fundamental frequency similarity generated segment pairs with smaller spectral distance than did transcription-based segmentation or random segment pairs. Speech directed to 12-month-olds resulted in a somewhat smaller difference when using fundamental frequency data compared to when using transcriptions. For adult-directed speech, no difference was found in spectral distance between pairs generated by the different bases for segmentation. Neither segmenting speech by highlighting similar segments as lexical candidates, nor using fundamental frequency as basis for segmentation is optimal for a speech segmentation model intended to simulate 12-month-olds or adults. These groups are more likely to segment speech based on their already present or growing linguistic experience than on acoustic similarity only. However, for a model simulating a 3-month-old infant, the present segmentation procedure and its basis for segmentation are more plausible. When modeling speech segmentation in an infant-like manner it is important to take into account both that the cognitive abilities of infants develop rapidly during the first year of life, and that some aspects of their linguistic environment vary during this period.
APA, Harvard, Vancouver, ISO, and other styles
3

Silverman, K. E. A. "The structure and processing of fundamental frequency contours." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234060.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Suckling, Anna Louise. "Auditory Attention to Fundamental Frequency of Pure Tones." Thesis, University of Canterbury. Communication Disorders, 2014. http://hdl.handle.net/10092/9398.

Full text
Abstract:
Two experiments were conducted. The first was a control condition and used the probe signal method similar to Greenberg and Larkin (1968) to see if a filter-like attentional mechanism was acting when listeners were presented with pure tone stimuli in the presence of background noise. The second experiment also used the probe signal method of Greenberg and Larkin (1968) to investigate the extent to which listeners direct their attention to a particular fundamental frequency (f0) when detecting complex tones masked by noise. Twenty adult listeners ranging from 23 years to 54 years with a median age of 28 years participated in both experiments. Of the 20 listeners, 8 were male and 14 were female. Both experiments used a Two Interval Forced Choice (2IFC) procedure. There were two types of trials, the target signal trial and the probe signal trial. The target frequency was presented on 71% of trials, and the probe frequencies on the remaining 29%. The results of Experiment 1 were similar to those obtained in Greenberg and Larkin’s (1968) pioneering study. The 1000 Hz target tone was detected at a significantly higher proportion than probe signals differing in frequency (p < 0.05). Detection scores were observed to be higher when probe signals had a frequency close to the 1000 Hz signal compared to when they had a frequency positioned further from the 1000 Hz target tone. Experiment 2 using complex target tones with f0 of 115 Hz (part 1) and 220 Hz (part 2) revealed a similar pattern to Experiment 1. Listener’s detection scores decreased the further the f0 of probe tones were positioned from the f0 of the target tone, revealing the shape of a band-pass filter. This pattern is consistent with the presence of an auditory attentional filter in the f0 domain for complex tones
APA, Harvard, Vancouver, ISO, and other styles
5

Beavers, Timothy Allan. "Fundamental Natural Frequency of Steel Joist Supported Floors." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/35880.

Full text
Abstract:
Three aspects in determining the first natural frequency of steel joist supported floors were studied. The aspects are: 1) determining which finite element model best predict the behavior of joist-slab tee-beams, 2) investigating the ability of proposed equations to calculate the effective moment of inertia of joist-slab tee-beams, and 3) developing a finite element model to predict the first natural frequency of steel joist supported floors. Several finite element models were tested to determine which one best predicted the experimental results of six joist-slab setups. The model which best predicted the experimental results was used. Next, a study was done to determine the ability of a proposed equation to predict the effective moment of inertia of joist-slab tee-beams. The study modeled and analyzed 130 joist-slab configurations and compared the results to those calculated using the proposed equations. Finally, a finite element modeling technique was developed to predict the first natural frequency of steel joist supported floors. Seven in-situ floors were experimentally tested, and those results were compared to the predicted values given by the models.<br>Master of Science
APA, Harvard, Vancouver, ISO, and other styles
6

Strelcov, Genadij. "Garsų tyrimas kompiuteriu." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120808_130631-37682.

Full text
Abstract:
Garsų sintezavimas – tai procesas, kurio metu yra „gaminamas “ garsas, kuris šiandien turi būti kuo natūralesnis. Šiame baigiamajame darbe yra apžvelgiama garso samprata ir jo charakteristika: garso galia, dažnio sąvoka, fundamentalus dažnis ir harmonika, garsų tipai. Panaudojant adityvųjį garsų sintezės metodą aprašomi pianino natų sintezavimo tyrimai. Buvo sukurtas sintezavimo algoritmas, juo remiantis atlikti sintezavimo eksperimentai. Sintezavimo algoritmas buvo tobulinamas tiek, kad sintezuotos pianino natų gamos skambėjimas, beveik nesiskiria nuo tikrosios.<br>Sounds synthesis - a process which is "produced" sound. Nowadays this sound has to be the most natural. This research is an overview of the concept of sound and its characteristics: sound power, frequency concept, fundamental frequency and harmonics, sound types. Using additive synthesis as a fusion of sounds has described in the piano music synthesizing research. Synthesis algorithm has been developed, it is based on a synthesis experiments. Synthesis algorithm has been improved so that the synthesized piano notes ringing in range, almost no different from the real one.
APA, Harvard, Vancouver, ISO, and other styles
7

Dusterhoff, K. E. "Synthesizing fundamental frequency using models automatically trained from data." Thesis, University of Edinburgh, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.649825.

Full text
Abstract:
The primary goal of this research is to produce stochastic models which can be used to generate fundamental frequency contours for synthetic utterances. The models produced are binary decision trees which are used to predict a parameterized description of fundamental frequency for an utterance. These models are trained using the sort of information which is typically available to a speech synthesizer during intonation generation. For example, the speech database is annotated with information about the location of word, phrase, segment, and syllable boundaries. The decision trees ask questions about such information. One obvious problem facing the stochastic modelling approach to intonation synthesis models is obtaining data with the appropriate intonation annotation. This thesis presents a method by which such an annotation can be automatically derived for an utterance. The method uses Hidden Markov Models to label speech with intonation event boundaries given fundamental frequency, energy, and Mel frequency cepstral coefficients. Intonation events are fundamental frequency movements which relate to constituents larger than the syllable nucleus. Even if there is an abundance of fully labelled speech data, and the intonation synthesis models appear robust, it is important to produce an evaluation of the resulting intonation contours which allows comparison with other intonation synthesis methods. Such an evaluation could be used to compare versions of the same basic methodology or completely different methodologies. The question of intonation evaluation is addressed in this thesis in terms of system development. Objective methods of evaluating intonation contours are investigated and reviewed with regard to their ability to regularly provide feedback which can be used to improve the systems being evaluated. The fourth area investigated in this thesis is the interaction between segmental (phone) and suprasegmental (intonation) levels of speech. This investigation is not undertaken separately from the other investigations. Questions about phone-intonation interaction form a part of the research in both intonation synthesis and intonation analysis.
APA, Harvard, Vancouver, ISO, and other styles
8

Pawi, Alipah. "Modelling and extraction of fundamental frequency in speech signals." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/8115.

Full text
Abstract:
One of the most important parameters of speech is the fundamental frequency of vibration of voiced sounds. The audio sensation of the fundamental frequency is known as the pitch. Depending on the tonal/non-tonal category of language, the fundamental frequency conveys intonation, pragmatics and meaning. In addition the fundamental frequency and intonation carry speaker gender, age, identity, speaking style and emotional state. Accurate estimation of the fundamental frequency is critically important for functioning of speech processing applications such as speech coding, speech recognition, speech synthesis and voice morphing. This thesis makes contributions to the development of accurate pitch estimation research in three distinct ways: (1) an investigation of the impact of the window length on pitch estimation error, (2) an investigation of the use of the higher order moments and (3) an investigation of an analysis-synthesis method for selection of the best pitch value among N proposed candidates. Experimental evaluations show that the length of the speech window has a major impact on the accuracy of pitch estimation. Depending on the similarity criteria and the order of the statistical moment a window length of 37 to 80 ms gives the least error. In order to avoid excessive delay as a consequence of using a longer window, a method is proposed ii where the current short window is concatenated with the previous frames to form a longer signal window for pitch extraction. The use of second order and higher order moments, and the magnitude difference function, as the similarity criteria were explored and compared. A novel method of calculation of moments is introduced where the signal is split, i.e. rectified, into positive and negative valued samples. The moments for the positive and negative parts of the signal are computed separately and combined. The new method of calculation of moments from positive and negative parts and the higher order criteria provide competitive results. A challenging issue in pitch estimation is the determination of the best candidate from N extrema of the similarity criteria. The analysis-synthesis method proposed in this thesis selects the pitch candidate that provides the best reproduction (synthesis) of the harmonic spectrum of the original speech. The synthesis method must be such that the distortion increases with the increasing error in the estimate of the fundamental frequency. To this end a new method of spectral synthesis is proposed using an estimate of the spectral envelop and harmonically spaced asymmetric Gaussian pulses as excitation. The N-best method provides consistent reduction in pitch estimation error. The methods described in this thesis result in a significant improvement in the pitch accuracy and outperform the benchmark YIN method.
APA, Harvard, Vancouver, ISO, and other styles
9

Skjei, Thomas. "Real-Time Fundamental Frequency Estimation Algorithm for Disconnected Speech." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/191.

Full text
Abstract:
A new algorithm is presented for real-time fundamental frequency estimation of speech signals. This method extends and alters the YIN algorithm, which uses the autocorrelation-based difference function, by adding features to reduce latency, correct predictable errors, and make it structurally appropriate for real-time processing scenarios. The algorithm is shown to reduce the error rate of its predecessor while demonstrating latencies sufficient for real-time processing. The results indicate that the algorithm can be realized as a real-time estimator of spoken pitch and pitch variation, which has applications including diagnosis and biofeedback-based therapy of many speech disorders.
APA, Harvard, Vancouver, ISO, and other styles
10

Ozturk, Ozlem. "Modeling Phoneme Durations And Fundamental Frequency Contours In Turkish Speech." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606733/index.pdf.

Full text
Abstract:
The term prosody refers to characteristics of speech such as intonation, timing, loudness, and other acoustical properties imposed by physical, intentional and emotional state of the speaker. Phone durations and fundamental frequency contours are considered as two of the most prominent aspects of prosody. Modeling phone durations and fundamental frequency contours in Turkish speech are studied in this thesis. Various methods exist for building prosody models. State-of-the-art is dominated by corpus-based methods. This study introduces corpus-based approaches using classification and regression trees to discover the relationships between prosodic attributes and phone durations or fundamental frequency contours. In this context, a speech corpus, designed to have specific phonetic and prosodic content has been recorded and annotated. A set of prosodic attributes are compiled. The elements of the set are determined based on linguistic studies and literature surveys. The relevances of prosodic attributes are investigated by statistical measures such as mutual information and information gain. Fundamental frequency contour and phone duration modeling are handled as independent problems. Phone durations are predicted by using regression trees where the set of prosodic attributes is formed by forward selection. Quantization of phone durations is studied to improve prediction quality. A two-stage duration prediction process is proposed for handling specific ranges of phone duration values. Scaling and shifting of predicted durations are proposed to minimize mean squared error. Fundamental frequency contour modeling is studied under two different frameworks. One of them generates a codebook of syllable-fundamental-frequency-contours by vector quantization. The codewords are used to predict sentence fundamental frequency contours. Pitch accent prediction by two different clustering of codewords into accented and not-accented subsets is also considered in this framework. Based on the experience, the other approach is initiated. An algorithm has been developed to identify syllables having perceptual prominence or pitch accents. The slope of fundamental frequency contours are then predicted for the syllables identified as accented. Pitch contours of sentences are predicted using the duration information and estimated slope values. Performance of the phone duration and fundamental frequency contour models are evaluated quantitatively using statistical measures such as mean absolute error, root mean squared error, correlation and by kappa coefficients, and by correct classification rate in case of discrete symbol prediction.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Fundamental frequency"

1

Duggan, Philip P. High resolution infrared defference frequency spectroscopy of the 4.7 glsm. fundamental CO band. National Library of Canada, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Lozano-Nieto, Albert. RFID design fundamentals and applications. Taylor & Francis, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lozano-Nieto, Albert. RFID design fundamentals and applications. CRC Press, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Jiang, Tao, Yan Zhang, and Lingyang Song. Orthogonal frequency division multiple access fundamentals and applications. Auerbach, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Leblebici, Duran, and Yusuf Leblebici. Fundamentals of High Frequency CMOS Analog Integrated Circuits. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63658-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Jiang, Tao, 1970 Jan. 8-, Song Lingyang, and Zhang Yan 1977-, eds. Orthogonal frequency division multiple access fundamentals and applications. Auerbach, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Leblebici, Duran. Fundamentals of high-frequency CMOS analog integrated circuits. Cambridge University Press, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Bahl, I. J. Fundamentals of RF and microwave transistor amplifiers. Wiley, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Norbert, Bartneck, Klaas Volker, and Schoenherr Holger, eds. Optimizing processes with RFID and auto ID: Fundamentals, problems and solutions, example applications. Publicis, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Finkenzeller, Klaus. Fundamentals and applications in contactless smart cards and identification cards, radio frequency identification and near-field communication. 3rd ed. Wiley, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Fundamental frequency"

1

Bäckström, Tom. "Fundamental Frequency." In Signals and Communication Technology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50204-5_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Weik, Martin H. "fundamental frequency." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_7827.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Weik, Martin H. "fundamental keying frequency." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_7828.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hamdan, Abdul-Latif. "Fundamental Frequency and Dentofacial Anomalies." In Dentofacial Anomalies. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69109-7_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Oxenham, Andrew J., and Christophe Micheyl. "Pitch Perception: Dissociating Frequency from Fundamental-Frequency Discrimination." In Advances in Experimental Medicine and Biology. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-1590-9_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Petley, B. W., and J. L. Flowers. "Frequency Metrology and the Fundamental Physical Constants." In Frequency Standards and Metrology. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74501-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Nandi, Swagata, and Debasis Kundu. "Fundamental Frequency Model and Its Generalization." In Statistical Signal Processing. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6280-8_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Visceglia, Tanya, and Janet Dean Fodor. "Fundamental frequency in Mandarin and English." In Interfaces in Multilingualism. John Benjamins Publishing Company, 2006. http://dx.doi.org/10.1075/hsm.4.03vis.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Yang, Zhongmin, Can Li, Shanhui Xu, and Changsheng Yang. "Fundamental Principle and Enabling Technologies of Single-Frequency Fiber Lasers." In Single-Frequency Fiber Lasers. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6080-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Dubrulle, Paul, Christophe Gaston, Nikolai Kosmatov, Arnault Lapitre, and Stéphane Louise. "A Data Flow Model with Frequency Arithmetic." In Fundamental Approaches to Software Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16722-6_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Fundamental frequency"

1

Banic, Milica, J. E. Sipe, and Marco Liscidini. "Frequency Bin Encoding and Graphs." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.ftu4f.7.

Full text
Abstract:
We present a strategy for designing passive sources of multipartite frequency-bin-encoded states, based on the target state’s graph representation. As examples we present integrated sources of three- and four-photon GHZ states, and four-photon L a 4 states.
APA, Harvard, Vancouver, ISO, and other styles
2

Oliver, Richard, Sidarth Raghunathan, Hoi Chun Chiu, Ali Binai-Motlagh, and Alexander L. Gaeta. "Tomography of a Frequency-Bin Qubit." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fm4r.2.

Full text
Abstract:
Using Bragg-scattering four-wave mixing, we prepare frequency-bin qubits and measure a purity of 0.92 through a lossy channel, suggesting viability for quantum networks using existing telecommunications infrastructure. Such a frequency-bin qubit obviates the polarization-compensation requirement of polarization qubits.
APA, Harvard, Vancouver, ISO, and other styles
3

Campbell, Graeme N., Lewis Hill, Pascal Del’Haye, and Gian-Luca Oppo. "Enhanced Frequency Combs via Self-Crystallizing Cavity Solitons." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fth4f.7.

Full text
Abstract:
A “self-crystallization” phenomenon of dark vectorial temporal cavity solitons can occur in Fabry-Pérot resonators, with major applications in frequency comb generation. This phenomenon arises from the long-range interactions between symmetry-broken light fields with orthogonal polarizations.
APA, Harvard, Vancouver, ISO, and other styles
4

Komza, Lukasz, Xueyue Zhang, Yu-Lung Tang, Hanbin Song, and Alp Sipahigil. "Frequency multiplexed emission from cavity-enhanced T centers." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.ftu3i.3.

Full text
Abstract:
To enable efficient s pin-photon i nterfaces w ith T c enters, cavity-enhanced emission is essential. We build an integrated photonics platform demonstrating cavity-enhanced emission from multiple T centers across distinct cavities, featuring a minimum lifetime of 126 nanoseconds.
APA, Harvard, Vancouver, ISO, and other styles
5

Chen, I.-Tung, Haoqin Deng, and Mo Li. "Bidirectional microwave-optical frequency conversion via itinerant optomechanics." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fw3k.6.

Full text
Abstract:
An itinerant optomechnical system is introduced using silicon-on-sapphire platform. By selecting different input configurations, efficient bidirectional microwave-to-optical conversion can be achieved, opening a new paradigm for optomechanical quantum transduction.
APA, Harvard, Vancouver, ISO, and other styles
6

Chen, Yujie, Xiang Cheng, Kai-Chi Chang, et al. "Spatial quantum beating in a cavity-filtered biphoton frequency comb." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.ftu4f.5.

Full text
Abstract:
We examine frequency entanglement via spatial quantum beating in a biphoton frequency comb, for both doubly and singly-filtered cases. The observed HOM revival is the incoherent superposition of SQB from different frequency pairs.
APA, Harvard, Vancouver, ISO, and other styles
7

Cheng, Dali, Eran Lustig, Kai Wang, and Shanhui Fan. "Band structure measurements in multi-dimensional synthetic frequency lattices." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fth4d.6.

Full text
Abstract:
We experimentally demonstrate a method to fully measure multi-dimensional band structures in synthetic frequency dimensions by introducing a gauge potential into the lattice Hamiltonian. We use this method to study non-Hermitian topology in high dimensions.
APA, Harvard, Vancouver, ISO, and other styles
8

Raghunathan, Sidarth, Richard Oliver, Yun Zhao, Karl McNulty, Michal Lipson, and Alexander Gaeta. "Telecom-to-Visible Frequency Conversion in a SiN Microresonator." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fw3k.4.

Full text
Abstract:
We demonstrate frequency conversion between 1283 nm and 705 nm using Bragg scattering four-wave mixing in a microresonator, which represents the largest frequency span demonstrated. Our noise measurements suggest it is suitable for quantum applications.
APA, Harvard, Vancouver, ISO, and other styles
9

Iyer, Arjun, Wendao Xu, Michael Pomerantz, and William H. Renninger. "A Simple Optomechanical Platform with Ultra-Wide Phonon-Frequency Tunability." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fth3d.2.

Full text
Abstract:
Phonon-frequency-tunable optomechanical interactions are demonstrated in shaped bulk acoustic resonators. Non-collinear all-optical coupling enables access to phonons with novel mode-selection rules, high quality factors (&gt;107), and frequency tunability over 10 GHz.
APA, Harvard, Vancouver, ISO, and other styles
10

Gaines, Jordan A., Karthik V. Myilswamy, Joseph M. Lukens, and Andrew M. Weiner. "Frequency Comb of Spectrally Pure Biphotons Using Time-Varying Cavities." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.ftu4f.1.

Full text
Abstract:
We propose and analyze the use of linear, time-variant cavities to spectrally compress broadband frequency-correlated photon pairs into combs of spectrally pure biphotons. Our approach relies on rapid switching of input coupling to the cavity.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Fundamental frequency"

1

Kang, Y. W. Fundamental mode frequency of the storage ring single cell cavity. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/88486.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Barton, Oscar, Ratcliffe Jr., and Colin P. Fundamental Frequency of a Composite Sandwich Plate Containing Woven Layers. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada359126.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ebeling, Martin, and Gerald Langner. Differences in Spectral and Fundamental Hearing between Absolute and Relative Pitch. Carl Stumpf Gesellschaft, 2024. http://dx.doi.org/10.61712/hnpk7403.

Full text
Abstract:
Consider a stimulus consisting of three sine tones with the same frequency spacing. For some listeners such a stimulus elicits a residual tone. Obviously, their hearing system interprets the three sine tones as three adjacent partials of a complex tone with a fundamental frequency equal to the frequency spacing. On the other hand, some subjects easily hear out some or even all single sine tones. One can therefore distinguish between two hearing modes: the case of the residue pitch is referred to as fundamental hearing, whereas the ability to resolve single partials is called spectral hearing or overtone hearing. Subjects may differ considerably in their capability for fundamental or spectral hearing. Depending on factors as the frequency region of the stimuli or the frequency of the residue pitch (missing fundamental) or depending on psychological factors as attention or individual hearing dispositions, subjects may even change between both modes of hearing. The present study demonstrates that possessors of absolute pitch show significant differences in spectral versus fundamental hearing compared to possessors of relative pitch. In some frequency regions, possessors and non-possessors of absolute pitch prefer either fundamental hearing or spectral hearing quite individually and often may change between both modes of hearing. However, statistically, possessors of absolute pitch show a significantly higher preference for perceiving a residue tone than possessors of relative pitch do.
APA, Harvard, Vancouver, ISO, and other styles
4

Jenkins, Ruth. The Affects of Vocal Fatigue on Fundamental Frequency and Frequency Range in Actresses as Opposed to Non-Actresses. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.6938.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Heinrich, Anne. A comparative study of perceptual ratings and fundamental frequency in female and male esophageal voices. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.2842.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Dippold, Marcel, Makrina A. Chairopoulou, Maximilian Drexler,, Michael Scheiber, and Holger Ruckdäschel. From vibrating molecules to a running shoe: connecting dielectric properties with process feedback in radio-frequency welding of TPU bead foams. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.pfm.1.

Full text
Abstract:
Besides new material solutions, innovative processing technologies are key for working towards a more sustainable future for bead foam products. Compared to standard steam chest molding, innovative radio frequency (RF) welding shows great potential based on its direct energy input, which results in reduced energy consumption. Thus, the present study provides fundamental insights into the correlation of dielectric properties of expanded thermoplastic polyurethane (ETPU) bead foams with the processing behavior. Impedance spectroscopy is used to analyze the complex relative permittivity 𝜀𝜀!∗ of both polymer and respective beads. The dielectric properties of polymers are dictated by their molecular structure and hence resulting dipoles. Thus, significant dependency on temperature and frequency is observed due to changes in chain flexibility and therefore alignment with the oscillating electromagnetic field. As cellular structures, the introduction of a second air phase leads to generally attenuated values at equal trends. Within the RF process, changes, predominantly in the imaginary part of 𝜀𝜀!∗ from initial starting temperatures up to welding, are directly reflected in the power curve as process feedback. Furthermore, temperature evolution and derived heating rate within the bead foams demonstrate excellent conformity with previous results with minor deviations due to the thermal inertia of the fiber optic temperature sensor.
APA, Harvard, Vancouver, ISO, and other styles
7

Hossain, Niamat Ullah Ibne, Raed Jaradat, Michael Hamilton, Charles Keating, and Simon Goerger. A historical perspective on development of systems engineering discipline : a review and analysis. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40259.

Full text
Abstract:
Since its inception, Systems Engineering (SE) has developed as a distinctive discipline, and there has been significant progress in this field in the past two decades. Compared to other engineering disciplines, SE is not affirmed by a set of underlying fundamental propositions, instead it has emerged as a set of best practices to deal with intricacies stemming from the stochastic nature of engineering complex systems and addressing their problems. Since the existing methodologies and paradigms (dominant pat- terns of thought and concepts) of SE are very diverse and somewhat fragmented. This appears to create some confusion regarding the design, deployment, operation, and application of SE. The purpose of this paper is 1) to delineate the development of SE from 1926-2017 based on insights derived from a histogram analysis, 2) to discuss the different paradigms and school of thoughts related to SE, 3) to derive a set of fundamental attributes of SE using advanced coding techniques and analysis, and 4) to present a newly developed instrument that could assess the performance of systems engineers. More than Two hundred and fifty different sources have been reviewed in this research in order to demonstrate the development trajectory of the SE discipline based on the frequency of publication.
APA, Harvard, Vancouver, ISO, and other styles
8

Roland-Holst, David, Kamalbek Karymshakov, Burulcha Sulaimanova, and Kadyrbek Sultakeev. ICT, Online Search Behavior, and Remittances: Evidence from the Kyrgyz Republic. Asian Development Bank Institute, 2022. http://dx.doi.org/10.56506/fepw3647.

Full text
Abstract:
Infrastructure has always been a fundamental driver of long-term economic growth, but in recent decades information and communication technology (ICT) has supported and accelerated the growth of the global economy in ways beyond the imagining of our ancestors. We examine the role of ICT infrastructure in facilitating labor markets' access and remittance flows for workers from the Kyrgyz Republic. Using a combination of traditional high frequency macroeconomic data and real time internet search information from Google Trends, we take a novel approach to explaining the inflow of remittances to a developing country. In the first attempt to model remittance behavior with GTI data in this context, we use a gravity model. We also attempt to account for both origin and destination labor market conditions, using Kyrgyz language search words to identify both push and pull factors affecting migrant decisions.
APA, Harvard, Vancouver, ISO, and other styles
9

Maydykovskiy, Igor, and Petras Užpelkis. The Physical Essence of Time. Intellectual Archive, 2020. http://dx.doi.org/10.32370/iaj.2450.

Full text
Abstract:
The article considers the model of the space-frequency-time continuum, according to which the physical essence of Time is manifested as a fraction of electromagnetic energy spent on updating a material object in a cyclic process of copying-incarnation. For all structural levels of physical reality, the value of this fraction is a fundamental constant, which can be represented as the tangent of the loss angle, or expressed in radians, as the angle of inclination of the evolutionary spiral, which characterizes the rate of change of states or the duration of events and processes. The value of this constant can be calculated, and its value turns out to be identically equals to the square of the fine structure Constant (α2). The description of the method for identifying a new constant allows us to present the formula of Scientific Discovery as the Physical Essence of Time.
APA, Harvard, Vancouver, ISO, and other styles
10

Buitrago-García, Hilda Clarena. Teaching Dictionary Skills through Online Bilingual Dictionaries. Ediciones Universidad Cooperativa de Colombia, 2022. http://dx.doi.org/10.16925/gcnc.23.

Full text
Abstract:
This module, aimed at helping both English as a Foreign Language (EFL) teachers and their students, is the result of a qualitative, applied, transversal and constructivist research conducted with Open Lingua teachers. One of the objectives of said research was to establish the factors that favored and hindered the curriculum integration of open access bilingual dictionaries in that specific EFL context in order to design and implement some pedagogical and didactic initiatives that would foster the effective use of those lexical tools. The present module was a fundamental element within the series of proposals that arose along the research. Its main objective was to provide the teachers with the necessary conceptual knowledge and didactic strategies and resources to teach their students how to use that kind of online dictionary with higher degrees of ease, enjoyment, and efficiency, and, thus, to reduce the frequency of look up errors. This module offers a variety of digital resources, handouts, and hands-on and assessment activities that can greatly facilitate their job when teaching dictionary skills to their students.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Fundamental frequency' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography