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Respeaker v2 disable audio out

Posted: Fri May 10, 2019 11:00 pm
by ljshewchuk
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.

Re: Respeaker v2 disable audio out

Posted: Mon May 13, 2019 2:13 pm
by bill.yu
Hi there,

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

https://github.com/SeeedDocument/ReSpea ... t_i1o0.bin

Re: Respeaker v2 disable audio out

Posted: Wed May 15, 2019 12:49 am
by ljshewchuk
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.

Re: Respeaker v2 disable audio out

Posted: Mon May 20, 2019 8:10 pm
by k.sadohara
I'm interested in the mic-only firmware because it enables high quality audio output and side steps the noise issue,
viewtopic.php?f=87&t=8259#p27891
But I guess a drawback is incapable of AEC.
Is it right?

Re: Respeaker v2 disable audio out

Posted: Tue May 21, 2019 10:56 am
by bill.yu
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.

Re: Respeaker v2 disable audio out

Posted: Thu May 23, 2019 2:35 pm
by k.sadohara
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.