FIR Filter coefficients for voice

SigmaDSP & SigmaStudio TheRacer Mar 31, 2015 00:00 2 replies Original on forum ↗

TheRacer Question

Mar 31, 2015 00:00

Hi All,

I would like to use a FIR block into a ADAU1761 for removing the background noise, how/where could I calibrate the right coefficients?

A simple pass-band filter isn't enough because the noise spectrum is overlapped to the human voice, then I would like test something "stronger" for getting a better quality into voice signal.

Thanks in advance

Audio Signal Processors

SigmaDSP Audio Processors

adau1761

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logoho Reply

Apr 2, 2015 00:00

Hi TheRacer,

you're right, that a simple pass-band filter is not enough to filter out the noise/human voice, because they are in the same, broad frequency spectrum. For adequate filtering of voice (the voice frequencies are change all the time) you have to change/adapt your filter coefficients all the time. The principle you are searching for is "Adaptive Filtering". There is a lot of literature out there, but it isn't simple...

Best regards

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EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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