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Hi. I have been working on the audio recording on Raspberry Pi with Wolfson Sound Card. The problem is that I get high noise from DMIC such that sox cannot do silence trimming. I tried both low high-pass filters but no use. I am wondering if there is…

Hi, I have been working on audio recording with the Wolfson sound card for months. But I got high noise from DMIC that I cannot use SOX to apply silence trimming. All the scripts I have been using are the original scripts. I am wondering if there's any…

So I've got the Wolfson card set-up and recording is successful. However it is a little different from a recording studio . When setting the gain levels I feel blind. Is there a way to monitor input signal to ensure there will be no clipping/to ensure…

Hey there, So I have a question regarding the DMICs on the wolfson audio card. I have been trying to find their maximum frequency response for some time now, but have been less than successful. Does anyone have this bit of information? I would greatly…

I followed the instructions here ( link ) to set up the DMIC mics for max gain with high pass filtering to prevent DC bias. I can get sound, but it is extremely faint. In audacity, I basically see a straight line with a few bumps on it. Other things seem…

Hello @all, just like many of whom I read here, I am currently trying to play a little with Jasper and the Wolfson audio card. I had Jasper up and running with a USB mic (standard setup, no tweeks) without the wolfson card already. I was pretty happy…

When recording from the on-board DMICs and the microphone on my headset, I have noticed DC offset. On my headset microphone, not so much, but on the DMICs there is a lot. When recording silence, the signal rests at around -30dB on the positive side. The…