Can you give me an example for this MATLAB snippet to generate sine wav with specified phase?
function synthesize_fp(file,f,d,p,gamma) % Matlab function synthesize_fp(file,f,d,p,gamma) % creates a .wav audio file of a sound where all frequencies, % amplitudes(power) and phase may be specified. % % file is a string which is the name of the .wav file. % f is a length n vector of frequencies in Hz % d is the duration in seconds % p is a length n vector of amplitudes % gamma is a length n vector of phase shifts, as a fraction of the % period of the first harmonic f1. % % Mark R. Petersen, U. of Colorado Boulder Applied Math Dept, Feb 2004 Fs=22050; nbits=8; % frequency and bit rate of wav file t = linspace(1/Fs, d, d*Fs); % time y = zeros(1,Fs*d); % initialize sound data for j=1:length(p); y = y + p(j)*cos(2*pi*f(j)*(t-gamma(j)/f(1))); % sythesize waveform end y = .5*y/max(y); % normalize. Coefficent controls volume. wavwrite( y, Fs, nbits, file)