To see the other types of publications on this topic, follow the link: Acoustic analysis.

Dissertations / Theses on the topic 'Acoustic analysis'

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

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Acoustic analysis.'

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.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Anderson, Shaun David. "Time-frequency methods for the analysis of multistatic acoustic scattering of elastic shells in shallow water." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39640.

Full text
Abstract:
The development of low-frequency sonar systems, using for instance a network of autonomous systems in unmanned vehicles, provides a practical means for bistatic measurements (i.e. when the source and receiver are widely separated) allowing for multiple viewpoints of the target of interest. Time-frequency analysis, in particular Wigner-Ville analysis, takes advantage of the evolution time dependent aspect of the echo spectrum to differentiate a man-made target (e.g. elastic spherical shell) from a natural one of the similar shape (e.g. solid). A key energetic feature of fluid loaded and
APA, Harvard, Vancouver, ISO, and other styles
2

Bienvenu, Kirk Jr. "Underwater Acoustic Signal Analysis Toolkit." ScholarWorks@UNO, 2017. https://scholarworks.uno.edu/td/2398.

Full text
Abstract:
This project started early in the summer of 2016 when it became evident there was a need for an effective and efficient signal analysis toolkit for the Littoral Acoustic Demonstration Center Gulf Ecological Monitoring and Modeling (LADC-GEMM) Research Consortium. LADC-GEMM collected underwater acoustic data in the northern Gulf of Mexico during the summer of 2015 using Environmental Acoustic Recording Systems (EARS) buoys. Much of the visualization of data was handled through short scripts and executed through terminal commands, each time requiring the data to be loaded into memory and paramet
APA, Harvard, Vancouver, ISO, and other styles
3

Ambróz, Richard. "Analysis of Powertrain Acoustic Properties." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-234137.

Full text
Abstract:
Dizertačná práca rieši problematiku analýzy akustických vlastností pohonných jednotiek. V úvodnej časti je teoretický rozbor fyzikálnych princípov vibrácií a hluku a prehľad súčasného stavu riešenia problematiky v oblasti návrhu pohonných jednotiek. Vlastná časť práce popisuje konštrukčný návrh elektrodynamického budiča vibrácií, návrh hodnotenia výsledkov merania a taktiež spôsob spracovania výsledkov. Akustické vlastnosti sú hodnotené pomocou normálových rýchlostí kmitania povrchu. V závere práce sú prezentované ukážky využitia metódy v praktických príkladoch spojených s návrhom pohonnej jed
APA, Harvard, Vancouver, ISO, and other styles
4

Davies, Jonathan James. "Underwater acoustic communications." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289679.

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

Jenal, Ruztamreen Bin. "Fatigue crack detection using nonlinear acoustic : analysis of vibro-acoustic modulations." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531115.

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

Locey, Lance Lester. "Analysis and Comparison of Three Acoustic Energy Density Probes." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd561.pdf.

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

Sikström, Johannes. "Vibro-acoustic analysis of a satellite reflector antenna using FEM." Thesis, Umeå universitet, Institutionen för fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-39875.

Full text
Abstract:
The acoustic environment generated during launch is the most demanding structural load case for large, lightweight satellite reflector antennas. The reflector is exposed to extremely high sound pressure levels originating from the structural excitation of the rocket engines and exterior air flow turbulence. This thesis aims to predict the structural responses in the reflector due to the acoustic pressure load with a model based on Finite Element Modelling (FEM). The FE-model is validated against a previously performed Boundary Element Method (BEM) analysis. An approach called Split Loading tog
APA, Harvard, Vancouver, ISO, and other styles
8

Pontén, Emeli. "Acoustic Design in Urban Development : analysis of urban soundscapes and acoustic ecology research in New York City." Thesis, Högskolan Dalarna, Ljud- och musikproduktion, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:du-4836.

Full text
Abstract:
The world is urbanizing rapidly with more than half of the global population now living in cities. Improving urban environments for the well-being of the increasing number of urban citizens is becoming one of the most important challenges of the 21st century. Even though it is common that city planners have visions of a ’good urban milieu’, those visions are concerning visual aesthetics or practical matters. The qualitative perspective of sound, such as sonic diversity and acoustic ecology are neglected aspects in architectural design. Urban planners and politicians are therefore largely unawa
APA, Harvard, Vancouver, ISO, and other styles
9

Brock, James L. "Acoustic classification using independent component analysis /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/2067.

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

Teki, S. "Cognitive analysis of complex acoustic scenes." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1413017/.

Full text
Abstract:
Natural auditory scenes consist of a rich variety of temporally overlapping sounds that originate from multiple sources and locations and are characterized by distinct acoustic features. It is an important biological task to analyze such complex scenes and extract sounds of interest. The thesis addresses this question, also known as the “cocktail party problem” by developing an approach based on analysis of a novel stochastic signal contrary to deterministic narrowband signals used in previous work. This low-level signal, known as the Stochastic Figure-Ground (SFG) stimulus captures the spectr
APA, Harvard, Vancouver, ISO, and other styles
11

Hiller, Steven Mark. "Automatic acoustic analysis of waveform perturbations." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/18962.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Vogel, Ryan N. "Structural-Acoustic Analysis and Optimization of Embedded Exhaust-Washed Structures." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1374833633.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Shen, Chia-Hsuan. "Acoustic Based Condition Monitoring." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1341797408.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Heckl, Maria Anna. "Heat sources in acoustic resonators." Thesis, University of Cambridge, 1985. https://www.repository.cam.ac.uk/handle/1810/250863.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Mathiyaparanam, Jeyisanker. "Analysis of acoustic emission in cohesionless soil." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001715.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Miller, Teresa S. "Turbulent boundary layer models for acoustic analysis." Diss., Wichita State University, 2011. http://hdl.handle.net/10057/3933.

Full text
Abstract:
An analysis of the three types of turbulent boundary layer (TBL) models for acoustic analysis is presented because current preferred models over-predict TBL contributions to aircraft interior noise predictions. The mean square pressure is a measure of the total energy due to the pressure fluctuations beneath a turbulent boundary layer. The single point wall pressure spectrum sorts the energy into frequencies. The normalized wavenumber-frequency spectrum sorts the energy into wavenumbers. The pressure fluctuations beneath a turbulent boundary layer are found by solving the Poisson equation. In
APA, Harvard, Vancouver, ISO, and other styles
17

Elfergani, Hisham. "Acoustic emission analysis of prestressed concrete structures." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/49383/.

Full text
Abstract:
This thesis examines the role of Acoustic Emission (AE) as a non-destructive testing (NDT) technique for prestressed and reinforced concrete structures. The work focuses on the development of experimental techniques and data analysis methods for the detection, location and assessment of AE from prestressed and reinforced concrete specimens. This thesis reveals that AE can be used to detect the onset of corrosion activity in wire in the interface between prestressed concrete and mortar as found in prestressed concrete pipes. Furthermore, this technique can be used to locate the corrosion activi
APA, Harvard, Vancouver, ISO, and other styles
18

Yi, Gina Ann. "A software toolkit for acoustic respiratory analysis." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/33391.

Full text
Abstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>Includes bibliographical references (p. 143-147).<br>Millions of Americans suffer from pulmonary diseases. According to recent statistics, approximately 17 million people suffer from asthma, 16.4 million from chronic obstructive pulmonary disease, 12 million from sleep apnea, and 1.3 million from pneumonia - not to mention the prevalence of many other diseases associated with the lungs. Annually, the mortality attributed to pulmonary diseases exceeds 150,000. Clinical signs o
APA, Harvard, Vancouver, ISO, and other styles
19

Richardson, Philip. "Acoustic analysis and tuning of cylindrical membranophones." Thesis, Anglia Ruskin University, 2010. http://arro.anglia.ac.uk/189010/.

Full text
Abstract:
This thesis scientifically investigates the setup and tuning of cylindrical membranophones as musical instruments. To date there has been very little quantitative analysis of drum tuning with respect to performance sound, studio recording and music production. Digital signal analysis has been used to quantify a number of acoustic related factors to drum setup and tuning. This is concerned with the evaluation of a drum's free vibration once excitation has occurred. Novel analysis of membranophone response is performed with respect to tuning an 'equalised drumhead'. Such analysis has not previou
APA, Harvard, Vancouver, ISO, and other styles
20

Hansen, Joseph T. "Link budget analysis for undersea acoustic signaling." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FHansen.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Einstein, Daniel Richard. "Nonlinear acoustic analysis of the mitral valve /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/8064.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Nicholson, Guy Charles. "The active control of acoustic impedance." Thesis, University of Salford, 1994. http://usir.salford.ac.uk/14778/.

Full text
Abstract:
The application of an active control force on a thin-walled acoustic boundary can modify the motional dynamics, and so influence the impedance presented to incident waves. This impedance determines transmission of acoustic energy, reflection of acoustic waves from the boundary and absorption of incident energy. This thesis studies control systems that generate control forces for the active control of surface acoustic impedance. The proposed systems rely on measurement of the acoustic pressure and surface velocity of the boundary. The systems can use adaptive digital signal processing, which of
APA, Harvard, Vancouver, ISO, and other styles
23

Uzoegbo, Herbert Chidozie. "Propagation of acoustic waves in concrete." Thesis, King's College London (University of London), 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321500.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Harvey, Alan Paul. "Nonlinear surface acoustic waves and applications." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255827.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Xu, Buye. "Generalized Acoustic Energy Density and Its Applications." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2339.

Full text
Abstract:
The properties of acoustic kinetic energy density and total energy density of sound fields in lightly damped enclosures have been explored thoroughly in the literature. Their increased spatial uniformity makes them more favorable measurement quantities for various applications than acoustic potential energy density (or squared pressure), which is most often used. In this dissertation, a new acoustic energy quantity, the generalized acoustic energy density (GED), will be introduced. It is defined by introducing weighting factors, α and 1 − α, in the formulation of total acoustic energy density.
APA, Harvard, Vancouver, ISO, and other styles
26

Nulsen, Susan, and n/a. "Combining acoustic analysis and phonotactic analysis to improve automatic speech recognition." University of Canberra. Information Sciences & Engineering, 1998. http://erl.canberra.edu.au./public/adt-AUC20060825.131042.

Full text
Abstract:
This thesis addresses the problem of automatic speech recognition, specifically, how to transform an acoustic waveform into a string of words or phonemes. A preliminary chapter gives linguistic information potentially useful in automatic speech recognition. This is followed by a description of the Wave Analysis Laboratory (WAL), a rule-based system which detects features in speech and was designed as the acoustic front end of a speech recognition system. Temporal reasoning as used in WAL rules is examined. The use of WAL in recognizing one particular class of speech sounds, the nasal consonant
APA, Harvard, Vancouver, ISO, and other styles
27

Sarikaya, Tevfik Bahadir. "A Comparative Analysis Of Matched Field Processors For Underwater Acoustic Source Localization." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612578/index.pdf.

Full text
Abstract:
In this thesis, localization of the underwater sound sources using matched field processing technique is considered. Localization of the underwater sound sources is one of the most important problems encountered in underwater acoustics and signal processing. Many techniques were developed to localize sources in range, depth and bearing angle. However, most of these techniques do not consider or only slightly takes into account the environmental factors that dramatically effect the propagation of underwater sound. Matched field processing has been developed as a technique that fully considers t
APA, Harvard, Vancouver, ISO, and other styles
28

John, Jeeva. "Acoustic Analysis of Speech of Persons with Autistic Spectrum Disorders." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1206329066.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Tashmukhambetov, Arslan. "Experimental Design, Data Analysis, and Modeling for Characterizing the Three-Dimensional Acoustic Field of a Seismic Airgun Array." ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/1084.

Full text
Abstract:
In June 2003, the Littoral Acoustic Demonstration Center conducted an acoustic characterization experiment for a standard seismic exploration array. Two moorings with Environmental Acoustic Recording Systems (EARS) were deployed in the northern part of the Gulf of Mexico to measure ambient noise and collect shot information. A 21-element seismic airgun array was towed along five parallel linear tracks with horizontal closest approach points to the EARS buoy position of 63, 500, 1000, 2000, and 5000 m. Calibrated acoustic pressure measurements collected during the experiment were analyzed to ob
APA, Harvard, Vancouver, ISO, and other styles
30

Wang, Chong Aerospace &amp Mechanical Engineering Australian Defence Force Academy UNSW. "Vibro-acoustic analysis of inverter driven induction motors." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Aerospace and Mechanical Engineering, 1998. http://handle.unsw.edu.au/1959.4/38706.

Full text
Abstract:
With the advent of power electronics, inverter-driven induction motor are finding increased use in industries because of applications that demand variable speed operations and because of the potential savings in energy usage. However, these drives sometimes produce unacceptably high levels in vibration and acoustic noise. A literature survey has revealed that while there has been intensive research on the design of inverters to minimize acoustic noise radiation from these drives, the vibro-acoustic behaviour of an induction motor structure has received relatively little attention. The primary
APA, Harvard, Vancouver, ISO, and other styles
31

Jeans, Richard. "Innovative methods for three dimensional fluid-structure interaction." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8189.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Ali, Andreas Mantik. "Distributed acoustic localization and tracking design and analysis." Diss., Restricted to subscribing institutions, 2010. http://proquest.umi.com/pqdweb?did=2023768071&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Yildirim, Baran. "Acoustic Wave Analysis Using Different Wave Propagation Models." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609527/index.pdf.

Full text
Abstract:
In this study in order to simulate the acoustic waves, Ray Theory and Normal Mode models are used. These methods are analyzed using MATLAB simulation tool<br>differences between two models are examined and a region with a known bottom profile and sound velocity profiles is investigated. The Ray Theory is used in acoustic systems which is the one of the applications of wave modeling. Ray theory is solved with standard Ordinary Differential Equation solvers and normal mode with finite element method. Different bottom profiles and sound velocity profiles previously taken are interpolated to form
APA, Harvard, Vancouver, ISO, and other styles
34

Kudo, Hiroaki, Jinji Chen, and Noboru Ohnishi. "Scene Analysis by Clues from the Acoustic Signals." INTELLIGENT MEDIA INTEGRATION NAGOYA UNIVERSITY / COE, 2004. http://hdl.handle.net/2237/10426.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Brown, Timothy J. "Experimental analysis of acoustic adaptation in bird song." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq31092.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

Philips, Scott M. "Perceptually-driven signal analysis for acoustic event classification /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5934.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Cicirello, Alice. "Vibro-acoustic analysis of structures with uncertain properties." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608078.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Jones, Catherine Jacquelynn Julia. "Queclaratives in Xhosa : an acoustic and perceptual analysis." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52426.

Full text
Abstract:
Thesis (PhD)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Key words: acoustic speech analysis, speech synthesis, speech perception, copulative queclarative, linguistics, psycho linguistics, human language technology This study investigates the notion of interrogativity in Xhosa as expressed in the form of Queclaratives. Queclaratives, or statements which are question-like in function, have been studied in many languages of the world. Unfortunately with regard to the Bantu languages, studies relating to interrogativity in general have largely been impressionistic in nature.
APA, Harvard, Vancouver, ISO, and other styles
39

Miller, D. G. "Acoustic emission analysis of an automotive paint system." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/47293.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Hara, Isao. "An acoustic analysis of vowel sequences in Japanese." Thesis, University of Newcastle upon Tyne, 2016. http://hdl.handle.net/10443/3420.

Full text
Abstract:
For many years, researchers on phonetics have been trying to characterise a sound of languages from various points of view and employing a variety of approaches and methods. Some researchers have focused on finding some common features across languages while others have concentrated on the phonetic details of a particular language. This thesis aims to investigate, using acoustic analysis methods, the properties of non-identical vowel sequences of a particular language, Japanese, thereby enhancing our knowledge of the phonetic characteristics of this particular language and in the process shedd
APA, Harvard, Vancouver, ISO, and other styles
41

Mleczko, Michał [Verfasser]. "Acoustic Analysis of Ultrasound Contrast Agents / Michał Mleczko." München : Verlag Dr. Hut, 2011. http://d-nb.info/1013526015/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Zheng, Haosheng, and Kaichun Zhang. "Noise Analysis of Computer Chassis and Secondary Sound Source Noise Reduction." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18547.

Full text
Abstract:
This article focuses on computer noise analysis and noise reduction processing. With the popularity of computers, people are increasingly demanding the comfort of using computers. Solving the noise problem of the computer case can make the working environment more comfortable. People working in a noisy environment for a long time can cause anxiety and the quality of work is not high. The main purpose of this paper is to analyse the characteristics of computer noise and to reduce the noise of the chassis through the secondary sound source. Through the comparison of the experimental and simulati
APA, Harvard, Vancouver, ISO, and other styles
43

Rae, George J. "Flow induced acoustic resonances in heat exchangers." Thesis, Robert Gordon University, 1986. http://hdl.handle.net/10059/608.

Full text
Abstract:
This thesis describes an investigation into the acoustic phenomenon in in-line tubular heat exchangers subjected to cross flow. The flow through such a heat exchanger can result in the production of very high noise levels, which occur as a result of the excitation of an acoustic standing wave in the cavity between the tube rows. This acoustic vibration can occur in large and small heat exchangers alike, resulting in drastically impared performance and working life. The phenomenon associated with such vibration is poorly understood and considerable anomalies still exist in published literature.
APA, Harvard, Vancouver, ISO, and other styles
44

Taulbee, Ron J. "Vibro-Acoustic Analysis of a Thin Cylindrical Shell with Minimal Passive Damping Patches." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1367459330.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Cullen, Lachlan Michael. "Acoustic receptivity in boundary layers with surface roughness." Thesis, Queen Mary, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327024.

Full text
APA, Harvard, Vancouver, ISO, and other styles
46

Taylor, Mark Victor. "Acoustic and instability properties of coaxial jet flows." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238545.

Full text
APA, Harvard, Vancouver, ISO, and other styles
47

Willison, Peter A. "Transmission line matrix modelling of underwater acoustic propagation." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334426.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

Blondel, Laurent Armand. "Compressed air acoustic sources for active noise control." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246196.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Beckett, Carolyn. "Studies of acoustic scattering using a parametric array." Thesis, University of Bath, 1992. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332293.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Shehan, Joe Michael. "Stability analysis of a 2-D acoustic/structure model." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA303097.

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