audio - Applying LFO on a signal in Matlab -


i want lfo 6hz sine wave modify amplitude of original signal +/- 2db. 

[y, fs] = wavread('input.wav'); t = 0:1/fs:(length(y)-1)/fs; y1 = y .* 1.584893.*sin(2*pi*6*t); wavwrite(y1,fs,'output.wav');

is going required? cuz after listened output signal sounds deformed.

in order apply sine wave amplitude modulation signal need multiply signal by

1 + * sin(2 * pi * fm * t)

where am amplitude of modulation (0.258925 in case, +/- 2 db) , fm modulating frequency (6 hz in case).

so expression should be:

y1 = y .* (1 + 0.258925 .* sin(2 * pi * 6 * t));

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