ReSpeaker Mic Array V2 recording noise

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Joined: Thu Sep 06, 2018 8:07 pm

ReSpeaker Mic Array V2 recording noise

Post by ningma97 » Sat May 25, 2019 7:09 am


I posted this before but still cannot solve the issue.

I connected the ReSpeaker Mic Array V2 from the bottom pins to a Raspberry Pi 3B+. All works fine but I notice the recording has an audible noise. See the attached spectrogram: the noise is shown as the horizontal lines as multiples of 1kHz.

If I connect the Mic Array via the micro USB port, the situation is slightly better but it seems to depend on the USB cable. In the end I found a very short USB cable and used to connect the mic array via the micro USB port, the noise disappeared.

I need to connect the Mic Array from the bottom as the micro USB port is in the way. Any suggestions, please?

micarray noise.png
micarray noise.png (646.7 KiB) Viewed 590 times

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Re: ReSpeaker Mic Array V2 recording noise

Post by bill.yu » Thu Jun 13, 2019 4:15 pm

Hi there,

We updated the firmware and you can delete your local one and download the latest one, burn to your xmos. Hope it can solve the issue. thanks.

Code: Select all

sudo apt-get update
sudo pip install pyusb click
git clone
cd usb_4_mic_array
sudo python --download 6_channels_firmware.bin  # The 6 channels version 

# if you want to use 1 channel,then the command should be like:

sudo python --download 1_channel_firmware.bin

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