Signal noise and Spurious tones
All Electronics Channel
Gregory investigates the signal noise and spurious tones generated by the Baseband speech processor.
The signal path is analyzed from the input anti-aliasing filter, through the DSP and reconstruction filters, searching for the noise.
An interesting artifact is observed, where the oscilloscope sampling generates false spurious tones, leading to a wrong analysis.
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Video showing the project design: https://youtu.be/XVTxv1jreog
00:22 - Introduction 01:58 - Low frequency oscillation 04:02 - Signal noise investigation 10:38 - Oscilloscope sampling ... https://www.youtube.com/watch?v=GiU5DjWCIcg
2022-11-02
0.0 LBC
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