Audio Effects in MATLAB

This project implements several audio effects in MATLAB, providing simple, easy-to-use functions for audio processing. Each effect simulates a unique aspect of sound design, enhancing audio signals creatively.

Reverb

Adds depth and realism by simulating natural sound reflections in an environment.

function reverbSignal = customReverberator(inputSignal, Fs, reverbTime, wetDryMix)

• inputSignal: Input audio signal.
• Fs: Sampling frequency.
• reverbTime: Time for reflections to decay.
• wetDryMix: Ratio of processed to original signal.

Chorus

Produces a rich, shimmering sound by blending delayed and pitch-modulated copies of the input.

function chorusSignal = customChorus(inputSignal, Fs, depth, rate, wetDryMix)

• depth: Maximum delay depth in seconds.
• rate: Modulation speed in Hz.
• wetDryMix: Ratio of processed to original signal.

Delay (Echo)

Repeats the input signal with customizable delay and decay, creating rhythmic echoes.

function echoSignal = customDelay(inputSignal, Fs, delayTime, decayFactor, wetDryMix)

• delayTime: Delay time in seconds.
• decayFactor: Attenuation of each echo.
• wetDryMix: Ratio of processed to original signal.

Distortion

Adds harmonic saturation or aggressive tones by amplifying and clipping the signal.

function distortionSignal = customDistortion(inputSignal, gain, clipLevel, wetDryMix)

• gain: Amplification applied before clipping.
• clipLevel: Threshold for clipping the signal.
• wetDryMix: Ratio of processed to original signal.

Tremolo

Modulates the amplitude to create a pulsating volume effect.

function tremoloSignal = customTremolo(inputSignal, Fs, rate, depth, wetDryMix)

• rate: Modulation rate in Hz.
• depth: Intensity of amplitude modulation.
• wetDryMix: Ratio of processed to original signal.

Example

Here is an example of applying an effect:

[audioIn, Fs] = audioread('input.wav');
wetDryMix = 0.5;
reverbTime = 1.5;
output = customReverberator(audioIn, Fs, reverbTime, wetDryMix);
audiowrite('output.wav', output, Fs);

License

This project is licensed under the MIT License - see the LICENSE file for details.