Respeaker v2 disable audio out

Products & Technology ReSpeaker
#1

Hi I was wondering if there is a way to disable the audio out portion of the Respeaker so that it only behaves as a USB audio-in (maybe firmware)?



So if I was to plug it in to Linux/Win/Mac/Android the audio out option wouldn’t even show up as available.



Thanks for any help.

ReSpeaker USB Mic Array - disable audio out
#2

Hi there,



It is related with firmware, here is the firmware for the mics only. thanks.



<LINK_TEXT text=“https://github.com/SeeedDocument/ReSpea … t_i1o0.bin”>https://github.com/SeeedDocument/ReSpeaker_Mic_Array_V2/raw/master/res/test_i1o0.bin</LINK_TEXT>

#3

Thanks it worked perfectly!



My use is a USB mic on Android TV (Nvidia Shield-Logitech Harmony remote), but with the regular ReSpeaker firmware USB audio out is the default device on Shield (not HDMI) with no real way of changing it (without root access - and editing audio_policy.conf).



With this test_i1o0.bin firmware HDMI is active (for HD audio passthrough) and the ReSpeaker v2.0 is a great farfield mic that can be used for voice searching.

#4

I’m interested in the mic-only firmware because it enables high quality audio output and side steps the noise issue,

<URL url="https://forum7.seeedstudio.com/t/heavy-noise-on-voice-from-audio-jack-on-mic-array-v2/6143/1 text=“viewtopic.php?f=87&t=8259#p27891”>https://forum7.seeedstudio.com/t/heavy-noise-on-voice-from-audio-jack-on-mic-array-v2/6143/1
But I guess a drawback is incapable of AEC.

Is it right?

#5

Hi there,



The issue(viewtopic.php?f=87&t=8259#p27891) is not related with AEC function. We are looking at the issue and see something induced the I2S abnormal. We will update the status on viewtopic.php?f=87&t=8259#p27891 page. thanks.

#6

I just want to know whether AEC can be enabled when the mic-only firmware test_i1o0.bin is installed.

Also I naturally expect to avoid the noise issue by disabling audio output from the mic-array.

#7

Will this firmware work on the new 2.1/ReSpeaker USB version as well? Just ordered the new:

<LINK_TEXT text=“https://www.seeedstudio.com/ReSpeaker-U … -4247.html”>https://www.seeedstudio.com/ReSpeaker-USB-Mic-Array-p-4247.html</LINK_TEXT>



If not could you make another firmware with the audio out totally disabled?



Thanks Bill!