Skip to main content
Signal Processing

Return to Question

replaced http://stackoverflow.com/ with https://stackoverflow.com/
Source Link
Community Bot
Community Bot
  • 1

I have been given an audio file (sine wave) 1000Hz as an input to my FFT algorithm. I have got 8192 power spectrum samples in a array.

What is the best and easiest way to check whether my output is right or wrong?

If I give a silent audio file then the output is zero for all samples. In a sine wav the o/p increases from 20 (0th sample) to 26059811 (743rd sample) and decreases gradually to 40.

If I get an idea of the output range then I can prove technically whether the FFT is working.

Any ideas would be helpful.

Refer to this linkthis link for any technical doubts.

I have been given an audio file (sine wave) 1000Hz as an input to my FFT algorithm. I have got 8192 power spectrum samples in a array.

What is the best and easiest way to check whether my output is right or wrong?

If I give a silent audio file then the output is zero for all samples. In a sine wav the o/p increases from 20 (0th sample) to 26059811 (743rd sample) and decreases gradually to 40.

If I get an idea of the output range then I can prove technically whether the FFT is working.

Any ideas would be helpful.

Refer to this link for any technical doubts.

I have been given an audio file (sine wave) 1000Hz as an input to my FFT algorithm. I have got 8192 power spectrum samples in a array.

What is the best and easiest way to check whether my output is right or wrong?

If I give a silent audio file then the output is zero for all samples. In a sine wav the o/p increases from 20 (0th sample) to 26059811 (743rd sample) and decreases gradually to 40.

If I get an idea of the output range then I can prove technically whether the FFT is working.

Any ideas would be helpful.

Refer to this link for any technical doubts.

added tags
Link
edit approved Jul 6, 2013 at 2:00
bjou
edit approved Jul 6, 2013 at 2:00
bjou
  • 336
  • 3
  • 13
Tweeted twitter.com/#!/StackSignals/status/247213874431012864
Post Migrated Here from electronics.stackexchange.com (revisions)
Source Link
Warrior
Warrior

How to check the FFT results of a sine wave?

I have been given an audio file (sine wave) 1000Hz as an input to my FFT algorithm. I have got 8192 power spectrum samples in a array.

What is the best and easiest way to check whether my output is right or wrong?

If I give a silent audio file then the output is zero for all samples. In a sine wav the o/p increases from 20 (0th sample) to 26059811 (743rd sample) and decreases gradually to 40.

If I get an idea of the output range then I can prove technically whether the FFT is working.

Any ideas would be helpful.

Refer to this link for any technical doubts.