https://hdl.handle.net/2123/8177 2026-06-07T10:43:20Z https://hdl.handle.net/2123/8430 Lab Report 1 Croteau, Matthew 2012-06-25T00:00:00Z https://hdl.handle.net/2123/8429 Lab Report 1 DESC 9115 Johnson, Samuel 2012-06-25T00:00:00Z https://hdl.handle.net/2123/8316 Lab Report 1 DESC 9115 Johnson, Samuel When a sound wave travels from the source it will disperse in different directions. The sound waves will continue until it is either out of energy or it hits a surface and reflects a different direction. When the receiver (an ear or microphone) hears the sound, it hears the direct sound coming straight from the sound source before hearing a delayed signal from a reflected surface. If the sound must travels further then there is more time for the direct signal to be heard, creating an echo, where as if it is close it will have more of a slap back or colouration effect. The parameters of the room are also important. If the sound is being reflected of many surfaces a flatter echo will occur. Some of the different effects that can be caused by delays are resonator, slap back and echo. One of the main differences between these effects is the delay time (τ), These effects are made by “comb filtering”. Comb filtering adds a delayed signal of the input to itself causing what is known as interference where the waves will either sum or subtract. There are two main types of signal processor comb filters, The feed forward (FIR) and the feedback (IIR). Lab Report 1 Creating a delay function using FIR and IIR Filters 2012-05-08T00:00:00Z https://hdl.handle.net/2123/8245 Pitch Shift Phase Vocoder Marlan, Oliver This is a report on the pitch shift audio effect achieved through the phase vocoder process using Matlab. 2012-04-23T00:00:00Z https://hdl.handle.net/2123/8247 DESC9115 2012 LAB REPORT 1 Yu-Hsien, Chang This zip file comprised of a written report, a script for calling function, a function, and sound files. 2012-04-23T00:00:00Z https://hdl.handle.net/2123/8248 AN ANALYSIS OF A MATLAB SCRIPT FOR THE DOPPLER EFFECT Shaun, Peffer This report is a detailed outline of recreating the Doppler effect in Matlab. I have acquired a MATLAB script via the Internet and will attempt to explain how the script works in detail. I will also be doing a slight modification to the script by applying it to a wave file that the script was not intended for. This will then be concluded with an overview of my results and findings. The Doppler Effect 2012-04-23T00:00:00Z https://hdl.handle.net/2123/8244 AN ANALYSIS OF A MATLAB SCRIPT FOR THE DOPPLER EFFECT Shaun, Peffer This report is a detailed outline of recreating the Doppler effect in Matlab. I have acquired a MATLAB script via the Internet and will attempt to explain how the script works in detail. I will also be doing a slight modification to the script by applying it to a wave file that the script was not intended for. This will then be concluded with an overview of my results and findings 2012-04-23T00:00:00Z https://hdl.handle.net/2123/8246 Pitch Shift Phase Vocoder Marlan, Oliver This is a lab report on Phase Vocoder Pitch Shift effect as used in Matlab. It includes a high level script and an audio file to use with it. 'pitchshift_oly' is the main function., 'script for pitchshift oly' is the script to call the function and enter parameters. 2012-04-23T00:00:00Z https://hdl.handle.net/2123/8241 311107435 Lab Report Carney, Thomas Channel vocoder 2012-04-19T00:00:00Z https://hdl.handle.net/2123/8239 Channel Vocoder Carney, Thomas 2012-04-19T00:00:00Z https://hdl.handle.net/2123/8240 Lab Report 1 - Frequency Modulated Vibrato Leong, Justin High level MATLAB script, MATLAB code for vibrato function, input and output sound files for function and written report. 2012-04-19T00:00:00Z https://hdl.handle.net/2123/8237 Lab Report 1: Fast Convolution Reverb (Cathedral Reverb) Cuthbert, Grant This upload contains a MATLAB function that applies a cathedral reverb using fast convolution. Associated in/out wave files, script and written report included. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8232 Laboratory Report No1 DarioRizo Rizo Barbosa, Jose Dario A written report in pdf format, a set of matlab files in a zip and in rar format, 4 audio files The written report is about reverberation code developed in Matlab. The set of Matlab files are code for the Reverberation Process, one high-level script made by me and many other coding files found in internet(zip and rar, contain the same set of files). The two audio files are the input files and the other two are the output files for the code developed in matlab. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8220 Digital Audio System: Lab Report 1- Distortion Lam, Tsun Kit a study of the theory and the structure of the Distortion Matlab code This package contains a text PDF, a function, a script, and 2 audio files 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8229 DESC9115 2012 Lab Report 1 Chang, Yu-Hsiang Lab Report 1 It includes the Matlabe script and function, its input and out put wave files, and the written report. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8238 Spatial Chorus with Fractal modulation Taylor, Robert Walter Chorus is a member of the family of ‘delay based effects’. Like flanging and vibrato the resultant effect is based on the principals of comb filtering and pitch variance due to dynamic modulation. In this lab report I will be discussing the processes undertaken to achieve a chorus effect using a fractal modulator, within the MatLab environment. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8233 DAS rotary loudspeaker Lab Report one Brennan, Ryan This is my first lab report. I have designed a rotary loudspeaker effect such as a leslie cabinet, using matlab code and added a pdf over view of the code with audio files to test the code. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8222 Delay Khasmuri, Zul This is a functioning delay which allows you to dial in your delay times and and gain with included impulse response wave file with graphical representation. Accompanying this is a report and matlab .m file. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8227 A matlab implementation of an audio compressor Stedman, Christopher A matlab-based implementation of an audio compressor was investigated. By varying the input parameters of the compressor, results were obtained which demonstrated the typical behavior and benefits of compressor use. The parameters however, did not correspond to those found on typical hardware or software compressors. Adjustment to the matlab code could be made to make the controls more understandable to audio practitioners. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8226 Lab Report 1 - Frequency Modulated Vibrato (Take 2) Leong, Justin Written Report, Input and Output Audio Files, High-level MATLAB script, MATLAB script for Vibrato function 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8228 Digital Distortion-Lab Report 1 Digital Audio Systems Ahmadi, Koosha One pdf file, 2 audio samples, script and distortion function, one mathematical equation and one plotting function 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8230 Head Shadowing Filter for 3D audio with headphones Song, Zhibo There are several methods to achieve 3D sound in the headphone listening environment now.However, for virtual sound sources, engineers want simply create the localization information by digital process. Through making appropriate time delays and spectral characteristics, there are different methods to simulate natural spatial cues now. In this report we will show a solution of using the Matlab functions to create filters which can simulate those cues. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8224 3D movement of a sound source Jimenez, Daniel R. This document intends to give the reader a first approach into the spatial effects aimed to recreate three dimensional sound atmospheres using a set of headphones as the auditory source for the listener. Throughout this document the reader will find an introductory approach to the spatial audio effects that will directly affect the results expected of a well-designed simulated 3D sound environment. Lab Report 1 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8218 Spatial Effects: Binaural Simulation of the Doppler Effect Fernandes, Daniel The aim of this project was to source exiting MATLAB code which were able to take a single channel sound and reproduce it binaurally (over headphones) in a way that simulates the motion of a sound source in a straight line as it passes in front of an observer. This submission includes a MATLAB script and function, input and example output sound files as well as an accompanying text document. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8234 Creating Vibrato Using Matlab Clarke, Adrian Report analysing a function in Matlab used to create vibrato. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8225 Spatial Chorus with Fractal Modulation Taylor, Robert Walter Chorus is a member of the family of ‘delay based effects’. Like flanging and vibrato the resultant effect is based on the principals of comb filtering and pitch variance due to dynamic modulation. In this lab report I will be discussing the processes undertaken to achieve a chorus effect using a fractal modulator, within the MatLab environment. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8235 Lab_report1_butterworth_filter Gong, EunJu 2 wave files-'yeah.wav' = original file/ 'year_filtered.wav' = filtered file. butterworth script, butterworth filter function, delay and add filter. average magnitude spectrum,x and y diagram. delay and filter diagram. FFT x,y diagram designing IIR Filter, butterworth filter using MatLab. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8236 DESC9115 LAB 1 Yu-Hsien, Chang This is the sound files, Matlab codes, and written reports of LAB1 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8219 DESC9115 Lab Report 1, MATLAB codes and audio files - Limiter. Rasa, Alexander James This includes Lab Report 1, MATLAB codes and audio files for the chosen topic of limiting. DESC9115 LAB REPORT 1 ALEXANDER RASA.pdf limiterscript.m comp.m output.wav c.wav 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8221 DESC9115 Lab Report 1 Gonzalez, Oscar The implementation of the Vibrato and Flanger effect by Oscar Gonzalez Lab report, matlab code, 3 audio files 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8217 Categories of Perception for Vibrato, Flange, and Stereo Chorus Martens, William; Marui, Atsushi Vibrato, Flange, and Stereo Chorus are perhaps the three most often used digital audio effects that are created by smoothly modulating the duration of a delay line at typically sub-audio rates. Common practice is to use a periodic or quasi-periodic modulation control signal with frequency roughly between 2 and 9 Hz, and both the rate and depth of delay modulation are typically adjusted according to the aesthetic criteria of a performer or by an audio production engineer. In order to establish norms for the musically useful range of modulation rate and depth for such delay-based effects, 25 listeners were asked to make categorical judgments regarding their perception of vibrato, flange, and stereo chorus effects. The results map out for these two modulation parameters three perceptual regions for these three related effects: the region in which modulation is too subtle for effective use, the parameter ranges that seem most musically useful, and the region in which it is too extreme for most musical applications. Of particular interest is the observed commonality between these perceptual regions for vibrato, flange, and stereo chorus effects. NA 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8223 McLean Pierce Lab Report 1: Compression Pierce, McLean This report explores Matlab code used for audio dynamics compression and presents a high-level Matlab script for controlling an existing compression function. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8216 Experimenting with Flute Vibrato Synthesis Bolster, Liz Report exploring the synthesis of vibrato using flute samples recorded without vibrato. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8215 FFT Convolution Reverberation Sjarif, Nathaniel Background Convolution can be achieved in matlab in both the Time and Frequency Domain. The FFT convolution in matlab is ostensibly more efficient than it’s conv function counterpart. Results Convolution in the Frequency domain using fft proves to be a lot more efficient than convolution in the time domain using the conv function in matlab. Using the conv function and the same two input files resulted in my computer crashing. Conclusion A mathematical analysis, utilizing coding within matlab has proven the efficiency and effectiveness of convolution reverberation in the frequency domain using transients in spaces as impulse responses. 2012-04-18T00:00:00Z https://hdl.handle.net/2123/8231 Single-Celled Hammond Organism (Leslie Speaker Simulation) Tweedley, Hayden This document outlines the initial laboratory investigation relating to the simulation of a rotary loudspeaker effect; namely that of the Leslie speaker. A mechanical effect in origin, an exploration ensues of prior art consisting of software implementations of the various effects constituting the Leslie speaker sound. 2012-04-18T00:00:00Z