respeaker / usb_4_mic_array

ReSpeaker 4 Mic Array with builtin VAD, DOA, AEC, Beamforming & NS
https://www.seeedstudio.com/ReSpeaker-Mic-Array-v2.0-p-3053.html
Apache License 2.0
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Delay compared to other microphone #57

Open nibill opened 3 years ago

nibill commented 3 years ago

I have a setup where I have multiple microhpones positioned across an apartment and all record the same audio at the same time. The ReSpeaker are connected to a Raspi4 and to the same Raspi is also a Rode NT-USB mic connected (so each Raspi device has two mics one ReSpeaker and one NT-USB). Now I have realized that, even though all mics start recording at the same time, there is a certain delay within the ReSpeaker recordings (at different locations), but also between a ReSpeaker and NT-USB recording, which are at the same location so there is no time delay. Does anyone have an idea what might cause the delay on the ReSpeaker?

Thank you.