How to isolate 1 KHz signal by using FFT algorithm on ADAU1452
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Hi Team,
We are using EVAL-ADAU1452 to come out a schematic to isolate 1 KHz signal by using FFT algorithm.
Please advise tech info and references.
regards,
ping
Audio Signal Processors
adau1452
adau1452 sigmastudio
fft
SigmaDSP Audio Processors
Ping,
The frequency domain functionality on the SigmaDSP family is very limited. There is no way to examine the amplitude of a single bin of the FFT output. This is, fundamentally, a time domain (stream) processor,
The best way to do this is by using one or more cascaded high-Q bandpass filters. This will allow examination of the output of a single narrow band without the overhead of an FFT.
Ken
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