How to generate a since wave at a specific irregular interval?

Hi Guys

I would like to schedule a sine wave at a specific irregular interval. Can anyone help me with this? (i.e. 0-8.5 is constant flat at 0, 8.5-11.5 sine wave, 11.5-12 constant 0. etc..) Thanks in advance!

Answer 1

[Walter Roberson]

notes = @(F,t)sin(8*F*2*pi*(0:1/11025:t-1/11025));

This is designed for 11025 Hz; if you want a different frequency then change the number.

Invoke with a frequency and a duration in seconds. You can use frequency 0 for an all 0 output.

Change a bunch of these together:

T = [notes(0,8.5), notes(440,3.5), notes(0, 0.5), ...];

You can then sound() the result, passing in the frequency as well:

sound(T, 11025);