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Dissertations / Theses on the topic 'Audio circuits'

Author: Grafiati

Published: 25 May 2024

Last updated: 19 July 2025

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1

Eichas, Felix [Verfasser]. "System Identification of Nonlinear Audio Circuits / Felix Eichas." Hamburg : Helmut-Schmidt-Universität, Bibliothek, 2020. http://d-nb.info/1212811860/34.

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2

Johnson, James Robert. "Interface design for an audio based information retrieval system." Master's thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-05042010-020011/.

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3

Najnudel, Judy. "Power-Balanced Modeling of Nonlinear Electronic Components and Circuits for Audio Effects." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS223.

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Cette thèse porte sur la modélisation de composants électroniques non linéaires pour la simulation de circuits analogiques audio. Notre but est de proposer des modèles à la fois assez sophistiqués pour que les simulations sonnent de façon réaliste, et assez simples pour permettre le temps réel. À cette fin, nous explorons deux approches, toutes deux fondées sur le formalisme des Systèmes Hamiltoniens à Ports (SHP). En effet, ce formalisme préserve la passivité et le bilan de puissance du système, ce qui, couplé à des méthodes numériques ad hoc, garantit la stabilité des simulations. La premièr

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4

Yengui, Firas. "Contribution aux méthodologies et outils d’aide à la conception de circuits analogiques." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0098/document.

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A la différence de la conception numérique, la conception analogique souffre d’un réel retard au niveau de la solution logicielle qui permet une conception à la fois rapide et fiable. Le dimensionnement de circuits analogiques exige en effet un nombre assez élevé de simulations et de vérifications et dépend beaucoup de l’expertise du concepteur. Pour pallier à ce retard, des outils de conception automatique basés sur des algorithmes d’optimisation locale et globale sont développés. Ces outils restent encore immatures car ils n’offrent que des réponses partielles aux questions du dimensionnemen

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Müller, Rémy. "Time-continuous power-balanced simulation of nonlinear audio circuits : realtime processing framework and aliasing rejection." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS453.

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Cette thèse s'intéresse à la simulation temps-réel de circuit audio nonlinéaires. Dans cette thèse, nous utilisons le formalisme des systèmes Hamiltoniens à ports (SHP) pour garantir le bilan de puissance et la passivité. De plus, nous adoptons un cadre fonctionnel à temps continu pour représenter des signaux "analogiques virtuels" et nous proposons d'approximer les solutions par projection sur des trames temporelles. En tant que résultat principal, nous établissons une condition suffisante sur les projecteurs de sorte à obtenir des trajectoires à bilan de puissance garanti. Notre but est doub

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Asar, Sita Madhu. "An Audio Processing System as an Example of Modern Circuit Board Design." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1480588012253634.

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7

Lin, Li-Yang. "VLSI implementation for MPEG-1/Audio Layer III chip : bitstream processor - low power design /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18396.pdf.

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8

González, Santos Ángel de Dios. "Circuits de traitement de signal numérique en temps continu ultra-faible consommation en technologie 28nm FDSOI pour applications audio." Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1I047.

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L’objectif de ce travail c’est l’étude et développement d’un système d’extraction des caractéristiques en utilisant techniques de traitement de signal en temps continu, afin de mitiger les inconvénients des implémentations existants basées en techniques analogiques et numériques conventionnelles, d’un système toujours en veille pour l’Internet des Objets. La cible est l’extraction du contenu spectral d’un signal audio en utilisant une nouvelle architecture basée en une cascade configurable de filtres à réponse impulsionnelle fini en temps continu. Un schéma efficace pour cascader des filtres e

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9

Zhao, Yue. "Independent Component Analysis Enhancements for Source Separation in Immersive Audio Environments." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/34.

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In immersive audio environments with distributed microphones, Independent Component Analysis (ICA) can be applied to uncover signals from a mixture of other signals and noise, such as in a cocktail party recording. ICA algorithms have been developed for instantaneous source mixtures and convolutional source mixtures. While ICA for instantaneous mixtures works when no delays exist between the signals in each mixture, distributed microphone recordings typically result various delays of the signals over the recorded channels. The convolutive ICA algorithm should account for delays; however, it re

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10

Li, Ye-Ming. "A design methodology for low phase noise in LC tuned CMOS voltage-controlled oscillators." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/14896.

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11

Douglas, Dale Scott. "Flicker noise in cmos lc oscillators." Thesis, Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26550.

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Sources of flicker noise generation in the cross-coupled negative resistance oscillator (NMOS, PMOS, and CMOS) are explored. Also, prior and current work in the area of phase noise modeling is reviewed, including the work of Leeson, Hajimiri, Hegazi, and others, seeking the mechanisms by which flicker noise is upconverted. A Figure of Merit (FOM) methodology suitable to the 1/f3 phase noise region is also developed, which allows a new quantity, FOM1, to be defined. FOM1 is proportional to flicker noise upconverted, thus allowing the effectiveness of flicker noise upconversion suppression techn

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12

Janiszewski, Marcin Józef. "Audio effects unit." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/6237.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>O objectivo principal da presente tese de mestrado centrou-se no desenho e construção de uma unidade de efeitos de áudio (Audio Effects Unit -AEU), cuja função consiste em processar sinais áudio em tempo real. O propósito central foi desenvolver uma unidade de processamento áudio genérica, cuja função de processamento, implementada no domínio digital, pode ser facilmente especificada pelo utilizador via uma aplicação de software implementada num computador. A primeira etapa deste projecto consistiu na implementação completa do hardware

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13

Castro, Jose Eduardo Garcia. "Estudo de tecnicas de amplificadores comutados em audio." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259694.

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Orientador: Oseas Valente de Avilez Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-07-22T00:41:17Z (GMT). No. of bitstreams: 1 Castro_JoseEduardoGarcia_M.pdf: 3681554 bytes, checksum: 3f4b9397fc9994dd2fabcf11eed7aec2 (MD5) Previous issue date: 1997<br>Resumo: Este trabalho objetiva o estudo de técnicas para os vários blocos funcionais de um amplificador comutado em áudio. A faixa de aplicação a que se direciona este estudo compreende os seguintes (baixas tensões, médias requisitos: potê

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Çoban, Abdulkerim Levent. "A low-voltage high-resolution audio delta-sigma modulator." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15514.

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Olivares, Jones Pablo Andrés. "Implementación de un Enlace de Audio Embebido Vía Internet." Tesis, Universidad de Chile, 2009. http://repositorio.uchile.cl/handle/2250/103625.

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El presente trabajo de título tuvo como objetivo crear un sistema embebido capaz de transmitir y recibir audio profesional AES3 a través de Internet tolerando eventuales problemas en la red. La razón de realizar este sistema está fundada en el creciente surgimiento de la tecnología Audio sobre IP que permite transmitir y reproducir audio de alta fidelidad usando redes de computadores. Para desarrollar el sistema fue necesario adquirir previamente todos los conocimientos prácticos y teóricos que lo fundamentan, como son los principios acústicos, los sistemas embebidos, el procesamiento d

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Graham, David W. "A Biologically Inspired Front End for Audio Signal Processing Using Programmable Analog Circuitry." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11549.

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This research focuses on biologically inspired audio signal processing using programmable analog circuitry. This research is inspired by the biology of the human cochlea since biology far outperforms any engineered system at converting audio signals into meaningful electrical signals. The human cochlea efficiently decomposes any sound into the respective frequency components by harnessing the resonance nature of the basilar membrane, essentially forming a bank of bandpass filters. In a similar fashion, this work revolves around developing a filter bank composed of continuous-time, low-power

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17

Chiu, Leung Kin. "Efficient audio signal processing for embedded systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44775.

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We investigated two design strategies that would allow us to efficiently process audio signals on embedded systems such as mobile phones and portable electronics. In the first strategy, we exploit properties of the human auditory system to process audio signals. We designed a sound enhancement algorithm to make piezoelectric loudspeakers sound "richer" and "fuller," using a combination of bass extension and dynamic range compression. We also developed an audio energy reduction algorithm for loudspeaker power management by suppressing signal energy below the masking threshold. In the second str

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18

Savary, Eric. "Conception et intégration d'une électronique de conditionnement pour un capteur audio à base de nano-fils de silicium." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4716.

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Les microphones sont des capteurs qui permettent à nos systèmes électroniques de prendre connaissance de notre environnement acoustique en fournissant un signal électrique représentatif des vibrations de l’air. Ils sont employés dans la plupart des systèmes multimédia, mais aussi dans les appareils auditifs. Dans l’implant auditif, le microphone se substitue à l’oreille humaine capable de détecter des pressions acoustiques variants de quelque μPa à quelques Pa. Les microphones, sont en général accompagnés d’un circuit électronique spécifique qui permet leur exploitation au coeur d’un système h

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19

Rozkopal, Tomáš. "Vliv topologie operačních zesilovačů na kvalitu audiosignálu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318196.

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The thesis describes different between any signal and audio signal from the used amplifier´s quality point of view. There are mentioned ways of origin of distortions and their effect on the audio signal quality. There is also described in detail the principal of operational amplifier, it´s circuit realization and ways to improve the circuit topology in order to reach the best qualities. Choice of parts used for discreet realization of operational amplifier is consulted. Last but not least the thesis contents the practical part, stating the reasons for realization of operational amplifiers from

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Sellrup, Jens, and Daniel Wilson. "Tonfrekvensspårledning : S-förbindningens funktion och dimensionering av alternativa material i förbindningen." Thesis, KTH, Data- och elektroteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168996.

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Spårledning används inom järnvägen för att lokalisera var tåg befinner sig. Detta examensarbete behandlar en modell av tonfrekvensspårledningar från Alstom. Teoridelen behandlar de båda modellerna DTC – 921 och DTC- 24 medan uträkningarna enbart behandlar den tidigare. Tonfrekvensspårledningar separeras med elektroniska skarvar genom förbindningar i spåret. Den förbindning som examensarbetet undersökt är av typ S-förbindning som idag består av en kopparkabel. Arbetet gick ut på att undersöka hur funktionen är uppbyggd och hur den skulle påverkas vid ett byte av material då koppar är stöldbegär

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Štěrba, Václav. "Návrh 10-ti kanálového equalizeru s optimalizací kmitočtové charakteristiky a spektrálním audio-analyzátorem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219896.

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This work deals with the design of a 10-zones equalizer with optimized frequency characteristics with a spectrum audio analyzer. In this work the problem of processing audio signals using equalization for filtering the interference frequencies, correction of frequency cover signal boost or suppression of the required zones of the audible spectrum are also analyzed. The influence of subjective perception of sound intensity of the audio signals reproduction and its use in working with equalizer is discussed too. The work describes the principles and usage of the audio-analyzer as a tool for the

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Fitzpatrick, Justin Jennings. "Analysis and Design of Low-Jitter Oscillators." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd369.pdf.

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Hrubý, Ondřej. "Gramofonový elektronkový zesilovač." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413191.

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This master´s thesis deals with a design and simulation of an audio power phono amplifier using vakuum tubes. The frequency response of suggested solution should comply with the norm specified by RIAA. It also describes a vacuum tube basic description and also its advantages for audio applications and principle of usage a magnetodynamic pick-up. Last part contains a design of microprocessor system and power supply.

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Bartoš, Pavel. "Zvukový modul pro platformu FITkit." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236709.

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This work deals with module of the FITkit platform, which makes it able to play sound files like mp3, ogg, etc. The module also adds to FITkit some new peripherals: color LCD display with touch screen and USB interface, by which we can connect flash drive.

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"Novel performance enhancement techniques for delta sigma modulators for telecom, audio and sensor applications." 2013. http://library.cuhk.edu.hk/record=b5549777.

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在過去的十年裡，隨著便攜式通訊，電腦與消費電子市場的快速發展，以及在超大規模積體電路中，越來越多的功能實現被轉移到數字領域中，這些都引起了人們對模數轉換器研究的極大關注。<br>基於過採樣與量化誤差整形技術，ΣΔ模數轉換器對與類比電路中的非理想特性具有很強的容忍度。然而，爲了優化其在功耗，硅片面積與上市時間等方面的性能，ΣΔ模數轉換器的設計需要對眾多實際問題做出折中考慮。本文在不同的設計層次上提出了一些創新，包括算法，架構及電路設計，從而提升其在通訊，語音與傳感等應用領域中的性能指標。<br>本文第一部份提出的新技術主要解決運用於低中頻無線接收器中開關電容型正交帶通ΣΔ模數轉換器的I/Q通道的不匹配問題。這些I/Q通道的不匹配將導致位於臨近信道的鏡像信號，自鏡像信號及量化噪聲混疊至輸入信道，從而降低模數轉換器的動態範圍。為此，本文提出了一種新的動態單元匹配技術與一種雙線性技術來解決上述問題。同時通過在I/Q信道間複用運算放大器，比較器與數模轉換器，芯片的面積得到了大幅的降低。基於以上技術，在0.18微米CMOS工藝上設計實現了開關電容型正交帶通ΣΔ模數轉換器的測試樣片，其鏡像抑制比可達到73dB，這是迄今為止公開發表論文中報告的最高值。<br>在本文的第二部份，我們關注ΣΔ模數轉換器在音頻領域的應用。其對動態範圍與功耗提出的較高要求為級聯型連續時間ΣΔ模數轉換器帶來了機遇。然而，相

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Rojas, Gonzalez Miguel Angel. "Design and Implementation of Switching Voltage Integrated Circuits Based on Sliding Mode Control." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7184.

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The need for high performance circuits in systems with low-voltage and low-power requirements has exponentially increased during the few last years due to the sophistication and miniaturization of electronic components. Most of these circuits are required to have a very good efficiency behavior in order to extend the battery life of the device. This dissertation addresses two important topics concerning very high efficiency circuits with very high performance specifications. The first topic is the design and implementation of class D audio power amplifiers, keeping their inherent high efficien

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Lin, Kang Ni, and 林岡妮. "Delta Sigma Modulator Circuit Design for Audio Application." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/84858688232958179346.

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碩士<br>中華科技大學<br>電子工程研究所碩士班<br>100<br>This thesis implements an oversampling analog to digital converter(ADC), applied for audio applications, with optimized design on overall circuits. This ADC, using delta sigma modulation technique, can achieve higher resolution with relaxed requirement on analog circuit specifications and less circuit power consumption, compared with other types of ADCs. This thesis presents the design of the core of the ADC, the second-order fully differential delta sigma modulator circuits, in detail. The modulator architecture is designed by behavioral simulation tool, M

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Liao, Jia-yuan, and 廖家源. "Application of audio amplifier design for power driving circuit." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/urg9jc.

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碩士<br>中原大學<br>機械工程研究所<br>98<br>The objective of this research is to design a driving circuitry of power amplifier for application to piezoelectric actuators. The circuit design consists of the Voltage Control Amplifier (VCA) circuit, the class-D amplifier circuit, and the direction selection circuit. The VCA circuit consists of the full-wave rectifier, the square wave generator, and the integrator. The range of control signal of VCA is greater than that of the previous designed audio amplification Integrated Circuit (IC). The power amplifier is designed base upon a class-D amplifier. The pulse

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Sun, Shao-Ming, and 孫紹茗. "Circuit Implementation of A PWM Class-D Audio Amplifier." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/44144231676284639499.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>94<br>The Class-D amplifier, for its high efficiency, has drawn much attentions recently. However, due to its switching operation, the linearity is needed to be improved by comparing with conventional linear amplifiers. Therefore, the negative feedback is applied in this thesis to reduce the harmonic distortion for better linearity. In addition, to avoid the shoot through current due to both power transistors are switched on at the same time, the dead time control is adopted. The over-current protection circuit is also added to prevent the short circuit by poor wi

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Yang, Cheng-Chung, and 楊健忠. "Design and Circuit Implementation of Digital Class-D Audio Amplifier." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/66416396664236345389.

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博士<br>國立成功大學<br>電機工程學系碩博士班<br>96<br>The system design and circuit implementation of digital-input class-D audio amplifiers (digital amplifiers) are presented in this dissertation. Due to the high power efficiency of class-D amplifiers, conventional class-A and class-AB amplifiers are gradually being replaced. Digital amplifiers that can achieve high power efficiency and can directly amplify digital audio signals will eventually become the design trend of audio amplifiers. In this dissertation, the design of delta-sigma modulators (DSMs), power MOSFET drivers, and the over-current protection fo

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Hsu, Chih-jung, and 許志榮. "Sliding Power Supply Circuit for Multilevel Class-D Audio Amplifier." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/36263073303688556469.

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碩士<br>國立雲林科技大學<br>電子與資訊工程研究所<br>99<br>This paper presents a robust power supply circuit for multilevel converter of class-D audio amplifier. Based on pulse-width-modulation buck converter, we develop a sliding-switching technique comprises a loading monitor and a voltage level controller. The loading monitor continuously checks the internal control signal of multilevel class-D amplifier to identify whether the loading is light or heavy. The voltage level controller then feedbacks corresponding voltage level to modulate pulse width of control signal in buck converter and adjust supplying curren

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鄭子俞. "The Fully Differential Sigma Delta Modulator for Biomedical Audio Front-End Circuit." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/96816860721795999865.

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碩士<br>國立交通大學<br>電機學院IC設計產業專班<br>97<br>In this thesis, we use inverter amplifiers to replace fully differential ones to implement a high dynamic range fully differential sigma delta modulator. Because the electron stethoscope and hearing aids are portable and using batteries to provide supply voltage, low-voltage and low power consumption are the key design consideration. In our structure, we use tri-state inverter amplifiers and four nonoverlapping phases to deal with the differential input signals. A sample and hold circuit used to separate the differential output signal of the integrator

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Jeng, Kuen-Feng, and 鄭昆豐. "The Peripheral Circuit Design & Implementation of Wavelet-Based Audio Processing System." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/04302030785700964710.

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碩士<br>國立交通大學<br>電機與控制工程系<br>87<br>In this thesis, we design the peripheral circuit of Wavelet-Based audio process system, with the personal computer, FPGA (Field Programmable Gate Array), and microcontroller AT89C51. We sample stereo audio signals , by CODEC , and send the signals to the part of DWT (Discrete Wavelet Transform). Then, we save the transformed data to SRAM buffers, and wait for the host to read data. Finally, we save data in Hard-disk, that can be read and write as we wish. Hardware description language is the new trend in

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Feng, Yu. "Integrated Distortion Suppression Circuit for a High Fidelity Digital Class-D Audio Amplifier." Thesis, 2009. http://hdl.handle.net/1807/18294.

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Due to the lack of feedback networks, digital class D amplifiers operating in open loop typically have inferior performance when compared to analog class D amplifiers in closed loop configuration. This thesis presents an integrated distortion suppression circuit design for digital class D amplifiers, which forms a feedback loop around the output stage. This circuit suppresses the output stage distortion and noise by equalizing the modulator effective duty ratio and the output stage effective duty ratio. The suppression circuit is integrated with the class D modulator. An integrated class D amp

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Wang, Tsun-Hsin, and 王村鑫. "Low Power Digital AGC and Sigma-Delta Modulator for Audio Front-End Circuit." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/32739677380027211005.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>96<br>IC processing technologies have a great improvement recently. There are more transistors per unit area. Therefore, applications are more and more extensive. Battery device products for audio applications, such as hearing aids, stethoscope, etc, hope circuits to operate at 1ow voltage, low area, and low power. In this thesis, a low-voltage low-area low-power digital automatic gain control (AGC) with a sigma-delta modulator for audio front-end circuit is realized. This thesis utilizes a direct feedback at the sigma-delta modulator output to design the digit

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Hsu, Jia-Lun, and 許家綸. "Analysis of Signal Leakage of Audio Frequency Track Circuit for High-Speed Rail." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/52206397064649999142.

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碩士<br>中原大學<br>電機工程研究所<br>100<br>The audio frequency(600Hz) signal is transmitted by the signalling system on the high speed track circuit, which can specify whether the track circuit being occupied. If any, the next train can not enter the occupied track circuit(about one kilometer) to prevent from the head-on collision. When the rail fastening assembly(RFA) is polluted badly or is covered with heavy rain, the audio frequency signal may leak out of the RFA as to the signalling system making the incorrect judgement that the track circuit were occupied. This thesis intends to simulate the leakag

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Chen, Chin-Lung, and 陳志龍. "CMOS Circuit Design of the RF Front-End for Digital Audio Broadcasting (DAB) Receiver." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/51643934538778822779.

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碩士<br>國立成功大學<br>電機工程學系<br>88<br>This thesis describes the design of a 2.5V 1.5GHz CMOS RF receiver front-end for Digital Audio Broadcasting(DAB) system. The receiver front-end combines a balanced low noise amplifer (LNA), quadrature downconversion mixers, an LO quadrature generator , LO input buffers, IF gain stages , a polyphase filter, second gain stages, and output buffers all in one single CMOS IC. Using polyphase image-reject architecture, CMOS RF circuits, and on-chip filtering, the receiver is fully

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Wang, Hsin-Hung, and 汪信宏. "The Beat Frequency Cancellation Circuit Design of Dual Channel Class D Audio Power Amplifier." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/45463562720762246429.

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碩士<br>淡江大學<br>電機工程學系碩士在職專班<br>100<br>Audio power amplifiers play an important role in the audio system.Compared by power efficiency,Class-D power amplifiers have better performance.The theoretical maximum efficiency of Class-D designs is 100%,and over 90% is attainable in practice. Use the self-oscillation Class D audio power amplifiers IC chip''s internal circuit is designed to be used on dual or several multi independent audio channel, and when dual audio channel transmit output power,PWM signal osc frequency is nonsynchronous and result the Beat Frequency. If the difference of sou

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Chang, Kang-Wei, and 張剛維. "Study of the EMS of Audio Earphone Input and Output Circuit in a Smart Phone." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/y4629v.

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碩士<br>國立交通大學<br>電機學院電信學程<br>102<br>This ground line of the earphone audio circuit also doubles as the FM antenna of a smart phone. Its use, between, was found to caucal the phone to fail the radiaed and conducted susceptibility (RS/CS) tests per EN301489 standard in the frequency range 8MHz~108MHz. It was found that the ferrite bead used to connect the earphone to PCB ground should be replaced by an ofen bead with more appropriate DC resistance and RF impedance profile. A series of experiments were conducted to pick beads tha enable the phone to pass the RS and CS tests, while not compromise i

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Chan, I. Jui, and 詹益瑞. "Design of High Power and High Efficiency Audio Frequency Amplifier With Active ThermalCompensation Biasing Circuit." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/86346266627799818401.

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碩士<br>長庚大學<br>電子工程學系<br>101<br>This thesis adopts a variety of amplifier structures in textbooks to design and construct a multi-stage, high fidelity audio amplifier. After the initial framework project plan has been done, we used the commercial circuit simulators ORCAD and Advance design system (ADS) to verify the preliminary amplifier design and modify the circuit operating points of transistors in order to obtain the desired amplifier’s characteristics such as high efficiency, low distortion and the best temperature stability. After the computer-aided design simulation of the overall ampli

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Marques, Débora Cavalheiro da Costa Domingues. "Clinical re-audit to the medication circuit and Look Alike Sound Alike medication." Master's thesis, 2020. https://hdl.handle.net/10216/128261.

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Marques, Débora Cavalheiro da Costa Domingues. "Clinical re-audit to the medication circuit and Look Alike Sound Alike medication." Dissertação, 2020. https://hdl.handle.net/10216/128261.

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Weng, Meng-Tse, and 翁孟澤. "Design of a 4.096-24.576Mb/s Clock and Data Recovery Circuit and a Decoder forS/PDIF Audio Receiver." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/51586385009981853142.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>94<br>An audio receiver is essential in mostly audio systems. It has two fundamental components to cope with audio signals. One is a front-end clock and data recovery (CDR) circuit and the other is a back-end decoder. The frond-end CDR circuit is used to extract the clock and retime the data from the input data. The back-end decoder is used to decode the bitstreams of the retimed data generated by the font-end CDR circuit into stereo audio streams or 5.1-channel audio streams. Then speakers or headphones play sound or music according to these audio streams. Moreov

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Tsou, Chia-Hua, and 鄒佳華. "Pop Music Culture in Transition under the Influence of Audio-visual Technology:Application of the Circuit of Culture in Analyzing Production and Consumption of Pop Music in the case of "Mayday"." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/3ey696.

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碩士<br>靜宜大學<br>大眾傳播學系<br>104<br>Music in the human society has been existed for so long. With the development of audiovisual technology, music can not only be appreciated from the form of live performance, but it can also be recorded and preserved as a cultural heritage. However, under the impact of digital technology, music industry, nowadays, has faced the challenge from illegal piracy and downloading. Making records and selling CDs cannot guarantee profits for artists and record companies. As a result, live concert becomes of a savior for music industry. During the live performance, audience

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