Is there anyone who has experience with narrow band audio noise reduction with the SSM2000? This IC was designed for noise reduction of HiFi-audio but my application is noise reduction in the range of 300Hz - 3000Hz. Is there, beside DSPs, an analog alternative for the SSM2000 or an alternative analog noise reduction circuit? Of course there IS a reason why I do NOT want to have a DSP in this circuit...
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Narrow band audio noise reduction with the SSM2000
- Thread starter hfmobile
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You might want to look at the ARRL Handbooks from the pre-DSP days (1970s-1980s). You'll see various analog noise reduction circuits using garden-variety components.
Somewhere back in the day, there was a design that used the Vf drop of diodes to gate-off the low level hiss noise while allowing the voice through. Personally, I find the on-off gating more annoying than the hiss.
Also, you could research 'compander' circuits which similarly COMpress and exPAND the dynamic range of audio signals.
Somewhere back in the day, there was a design that used the Vf drop of diodes to gate-off the low level hiss noise while allowing the voice through. Personally, I find the on-off gating more annoying than the hiss.
Also, you could research 'compander' circuits which similarly COMpress and exPAND the dynamic range of audio signals.
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