Bluetooth Speaker with Mic Input used with AlexaPi

[Jasonb11]

Hello, I am trying to get a iSound twist speaker with a mic working on Alexa Pi. Have tried multiple PulseAudio 5 combinations in the config.yaml but have not gotten any success with the speaker's mic input. I read that Pulse audio >= 6 will support headsets but I didn't find any tutorials on how to install v6 to test. I also hear BlueALSA will supposedly do something what I am looking to do. Has anyone gotten this working and would be willing to share how they did it? If it is even possible...

[EmerickH]

Hello, You have 2 solutions:

• You can use pulse, and so the config is done with pavucontrol for example, not in config.yaml, just:

input_device: "pulse"
output: "pulse"
output_device: ""

• Or you can use alsa, and the config is done in config.yaml:

input_device: "YOUR INPUT PCM"
output: "alsa"
output_device: "YOUR OUTPUT PCM"

The PCMs can be obtained by aplay -L for output and arecord -L for input. It's a thing like this plughw:XXX,Dev:X or just plughw:XXX

Emerick

[Jasonb11]

This kind of makes sense. Except, what is pavucontrol? How is this not controlled in config.yaml?

[EmerickH]

http://lmgtfy.com/?q=pavucontrol

PulseAudio Volume Control (pavucontrol) is a simple GTK based volume control tool ("mixer") for the PulseAudio sound server.

[Jasonb11]

I'm still having trouble with audio input.

I just saw that raspbian was upgraded to stretch. They removed pulseaudio.

Maybe upgrading will fix my issue?

[renekliment]

In pavucontrol this would work. Doing it in ALSA is a little more hardcore, but should work. Especially since we've updated to PyAudio and don't use ALSA directly. You can give it a shot, but be sure to upgrade AlexaPi.