67 lines
2.1 KiB
Markdown
67 lines
2.1 KiB
Markdown
# ECE45-project
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Audio synthesizer project created by ECE 45 students, written using the MATLAB language and MATLAB GUI
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## Contributors
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Will add member names shortly
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## Function Prototypes
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Templates to create your own functions.
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### Wave generating function
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```
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function x = generate_WAVENAME(amplitude, frequency, phase, fs, duration, duty)
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% GENERATE_WAVENAME: returns a matrix of sampled WAVENAME wave
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% CONTRIBUTORS:
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% Person1: how you contributed
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% Person2: how you contributed
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% etc
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% DOCUMENTATION:
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% phase shift is in number of periods
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% fs is the sampling frequency: how many sample points per second
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% duration is time in seconds
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% duty is a number between 0 and 1
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% initialize local variables from input arguments
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n = fs * duration; % number of samples (length of matrix)
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dt = 1 / fs; % sampling period: time between two sample points
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% initialize a one dimensional zero matrix to be populated
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x = zeros(1, n);
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% populate the matrix
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for i = 1:n
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YOUR CODE HERE
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end
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end
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```
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NOTE: duty does not apply to some functions (such as sinusoids)
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### Envelope function
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```
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function x = envelope(input, fs, period, attack , decay, sustain, release)
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```
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where attack, decay, release are percentages between 0 to 1 of the period
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sustain is the percentage of the amplitude it should sustain for
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**envelope can be pitch or amplitude envelope**
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### Filter function
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```
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function output_timedomain = Filter(input_soundin_timedomain, Fs, LOW, MED, HIGH)
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```
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where LOW, MED, HIGH are user-selected variables of any value.
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**output should be in time domain for all functions (new sound)**
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## Useful websites
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- [Learning Synths](https://learningsynths.ableton.com)
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- [Learning Synths Playground](https://learningsynths.ableton.com/en/playground)
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- [DIY Synthesisers](https://blog.demofox.org/diy-synthesizer/)
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- [Port Audio (audio I/O library)](http://portaudio.com/)
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- [Synthesis ToolKit in C++](https://ccrma.stanford.edu/software/stk/)
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- [Max](https://cycling74.com/products/max)
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- [Software by Miller Puckette](http://msp.ucsd.edu/software.html)
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