Subsampling in an audio pipeline

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Subsampling in an audio pipeline

wavlew
I am using a gst spectrum element in a python environment in this pipeline:

pipeline = Gst.parse_launch(autoaudiosrc ! spectrum interval=100000000 bands=256 threshold=-70 multi-channel=true ! fakesink)

Everything works fine but the samplerate is with 96kHz very high. For a spectrum analyzer, the quarter of it would be enough. so I could save FFT processing time.

How can I force subsampling (to lets say 20kHz)?
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Re: Subsampling in an audio pipeline

Baby Octopus
autoaudiosrc ! audioconvert ! audio/x-raw,rate=20000 ! spectureum ....
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Re: Subsampling in an audio pipeline

wavlew
... perfect, thank you !
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