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Mini USB Microphone lots of clicking noise
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Mini USB Microphone lots of clicking noise

by qLrtGgRU4LdAzR4e on Thu Nov 16, 2017 2:49 pm

I recently purchased a mini USB microphone from adafruit to use with my Pi Zero. I'm following the instructions https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/recording-audio and running
Code: Select all | TOGGLE FULL SIZE
arecord --device=hw:1,0 -f S16_LE -r 44100 -c1 test.wav
The resulting wav file has this constant clicking noise in the background. Is there anyway to get rid of that? I tried following these trouble shooting instructions https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/troubleshooting but I don' t know how to set the usb mode to 1.1?

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Re: Mini USB Microphone lots of clicking noise

by adafruit_support_mike on Thu Nov 23, 2017 3:28 am

Try adding:

Code: Select all | TOGGLE FULL SIZE
dwc_otg.speed=1
to the end of your /boot/cmdline.txt file and see if that helps.

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Re: Mini USB Microphone lots of clicking noise

by qLrtGgRU4LdAzR4e on Fri Dec 01, 2017 4:00 pm

Yeah I already tried that - it's listed as one of the hints in the troubleshooting post I linked above:

"You can work around the problem by adding dwc_otg.speed=1 to /boot/cmdline.txt and setting the USB ports to USB-1.1 mode."

Do you know how I set the USB port to USB-1.1 mode?

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Re: Mini USB Microphone lots of clicking noise

by adafruit_support_mike on Sat Dec 02, 2017 3:43 am

That is the option that sets the OTG port to USB-1.1

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Re: Mini USB Microphone lots of clicking noise

by qLrtGgRU4LdAzR4e on Mon Dec 04, 2017 3:22 pm

Gotcha thanks. If there is nothing else to try I would suggest you stop recommending this microphone for the raspberry pi. The clicking artifact is pretty annoying.

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Please be positive and constructive with your questions and comments.