• READWAV("file")—Returns the audio data contained in the WAV file file and places it into a matrix. Each column represents a separate channel of data. Each row corresponds to a sample in time.
• WRITEWAV("file", s, b, M)—Writes the data contained in the array M to a WAV file using the sample rate s and bit resolution b.
• GETWAVINFO(“file”)—Returns a vector containing, in order, the format information of a WAV file:
◦ The number of channels
◦ The sample rate
◦ The bit resolution (or the number of bits per sample)
◦ The average number of bytes per second that an audio player device would have to process to play the audio in real time.
Arguments
• file is a string corresponding to the pulse code modulated (PCM) Microsoft WAV filename or path and filename.
• s is an integer sample rate.
• b is an integer bit resolution. 1 ≤ b ≤16.
• M is a matrix of real numbers, where each column corresponds to a different channel, and each row to a sample in time.
Additional Information
• If the specified bit resolution b is 1-8, the data is written to file as unsigned byte data.
• The limits on values in the vector of amplitudes M range from 0 to 255 (28).
• If b is 9-16, word data (two bytes) is written to file. The limits on word data are −32768 to +32767 (215).