Why we have to choose N=320 samples for distinguishing DTMF frequency...Can any body give me the exact proof? :grin:

DTMF and SAMPLING

Topic		Replies	Views
Sampling Frequency Due	2	1452	May 6, 2021
Limiting fix_fft to a Band Audio	21	9609	May 6, 2021
Generating high frequency tones Audio	13	11579	May 6, 2021
Playing with FFT Science and Measurement	17	22026	May 6, 2021
Frequency Measurement FFT, DFT Development	18	24848	May 6, 2021