Hi
Yes, you can use the 6 channels firmware and select the channel 1~4, they are the raw audio from 4 mics. there are some 6 channels firmware and you can select the best one fits your project.
<LINK_TEXT text=“http://wiki.seeedstudio.com/ReSpeaker_M … e-firmware”>http://wiki.seeedstudio.com/ReSpeaker_Mic_Array_v2.0/#update-firmware</LINK_TEXT>
firmware
channels
note
1_channel_firmware.bin
1
processed audio for ASR
6_channels_firmware.bin
6
channel 0: processed audio for ASR, channel 1-4: 4 microphones’ raw data, channel 5: playback
6_channels_firmware_6.02dB.bin
6
same as 6_channels_firmware.bin, but 4 microphones have a 6.02dB gain
6_channels_firmware_12.04dB.bin
6
same as 6_channels_firmware.bin, but 4 microphones have a 12.04dB gain
48k_1_channels_firmware.bin
1
48k sample rate, 1 input channel
48k_6_channels_firmware_6.02dB.bin
6
s48k sample rate, 1 input channel, 6.02dB gain
Thanksbest rgdsBill