Zaf-Matlab

Zafar's Audio Functions in Matlab for audio signal analysis.

Files:

• zaf.m: Matlab class with the audio functions.
• examples.ipynb: Jupyter notebook with some examples.
• audio_file.wav: audio file used for the examples.

Functions:

• stft - Compute the short-time Fourier transform (STFT).
• istft - Compute the inverse STFT.
• melfilterbank - Compute the mel filterbank.
• melspectrogram - Compute the mel spectrogram using a mel filterbank.
• mfcc - Compute the mel-frequency cepstral coefficients (MFCCs) using a mel filterbank.
• cqtkernel - Compute the constant-Q transform (CQT) kernel.
• cqtspectrogram - Compute the CQT spectrogram using a CQT kernel.
• cqtchromagram - Compute the CQT chromagram using a CQT kernel.
• dct - Compute the discrete cosine transform (DCT) using the fast Fourier transform (FFT).
• dst - Compute the discrete sine transform (DST) using the FFT.
• mdct - Compute the modified discrete cosine transform (MDCT) using the FFT.
• imdct - Compute the inverse MDCT using the FFT.