generate a signal of followings notes [240 256 288 320 360 400 450 480hz] with sampling rate of 8000 samples/sec each of duration 2 sec after the delay of 1 sec?

thanks

Answer 1

[David Young]

You can generate a sine wave of given duration, amplitude, frequency and sample rate like this:

duration = 2;  % second
samprate = 8000; % Hz
frequency = 240; % Hz
amplitude = 1;

t = 0:1/samprate:duration;
y = amplitude * sin(t * (2 * pi * frequency));

You can concatenate such samples together, along with some stretches of zeros, to get the signal you need.

[ap singh]

i wan to generate above notes simultaneously after the delay of 1 sec?..

can i write like

duration = 2; % second

samprate = 8000; % Hz

i=1:1:8

frequency{i} = [240 256 288 320 360 400 450 480]; % Hz

amplitude = 1;

for i=1:1:8

t = 0:1/samprate:duration;

y = amplitude * sin(t * (2 * pi * frequency));

Answer 2

[Paulo Silva]

nice homework and not a single mention of the signal type and amplitude, are you expecting us to do it for you? at least show some effort in solving it, I did the code, choose to do sine waves with aplitude 1 and listened to the signal, here's the output file

load signal
soundsc(signaltotal,8000);