Hello I would like to recognize a sound (beep) that is in a wav file and compare it with a direct sound! how to do it ?
' For i = 0 To N - 1 'deletes the used values from the buffer ' TimeBuffer.RemoveAt(0) ' Next TimeBuffer.Clear
I have done that before – recognize a tone in real time using FFT's. I believe I may have used Klaus' FFT library or I may have used my own. Search this Forum for "Canalrun FFT", maybe I uploaded it, I don't remember.
The signal is a sound generated with a microcontroller. It is squared.What kind of signal do want to measure?
Depending on the signal type, there is no real period (example: sounds).
Thank you for sharing this.I have been lurking on this thread. Back around post #10 I mentioned a project I had done years ago. I was able to find that project and have included...
With a quare signal it would be more efficient to check directly the time signal.The signal is a sound generated with a microcontroller. It is squared.
Try the attached one.In a first try, it throws an error:
I will try it.
I need to detect a known frequency from a morse code using your example.
The morse code dot duration is 100ms and dash is 300ms and the frequency of the signal is 2KHz.