Respeaker Noise Problem

Products & Technology ReSpeaker
1

Hi,

I’m using the ReSpeaker 4-Mic Array connected to a Raspberry Pi 4B.

When I record audio with the ReSpeaker 4-Mic Array, there is an issue where noise is mixed in, as shown in the figure below. I would like to understand the cause of this noise.

image
image1715×922 166 KB

The noise frequency differs for each microphone.

Furthermore, when I change the sampling rate, the noise frequency also changes.

If you know anything about the cause of this issue, please let me know.

2

Hi,
Thank you for your feedback. Could you please provide the SKU of the product you are using? This will make it convenient for us to conduct re-tests.

3

Try connecting the ReSpeaker directly to a USB 2.0 port (not USB 3.0).
Avoid using USB hubs.
Run lsusb -t and verify that the ReSpeaker is on a dedicated USB bus with sufficient bandwidth.

4

@Seeed_Kian
The SKU is 103030216.

@ahsrabrifat
I’m not using a USB port .