i.MX Processorsのトピックimx6ULEVK Audio Source

imx6ULEVK Audio Source

boontiongtan — Thu, 23 Mar 2017 09:14:22 GMT

Hi,

Board: imx6ULEVK

RF: Murata 1DX combo

Kernel: 3.14.52-1.1.1

BlueZ: v5.28

I want to stream music from board to an external bluetooth speaker (Sony SRS-BTM8). I was able to pair and connect with the speaker using bluetoothctl. I used pulseaudio to attempt a stream but failed. I noticed something which I haven't been able to resolve. When I do a "pactl list sinks short", I got the below:

0 alsa_output.platform-sound.14.analog-stereo module-alsa-card.c s16le 2ch 48000Hz SUSPENDED
1 bluez_sink.8C_DE_52_1E_3C_F9 module-bluez5-device.c s16le 1ch 8000Hz SUSPENDED

The BIG question is why did my speaker appear as a "1ch 8000Hz" device? I was expecting the description to be something like "2ch 44100Hz".

I believed this was the main reason why I failed to stream.

Does it got to do with the fact that my bluetooth speaker also support handsfree? Any advice here?

Regards,

Re: imx6ULEVK Audio Source

b36401 — Fri, 24 Mar 2017 02:34:57 GMT

Please try to choose sound device with pressing F6 in AlsaMixer interface.

Have a great day,
Victor

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Re: imx6ULEVK Audio Source

boontiongtan — Fri, 24 Mar 2017 03:40:00 GMT

The correct device was selected in Alsamixer but the issue is still there. This is what I got:

paplay -vvv Goodbye.wav
Opening a playback stream with sample specification 's16le 2ch 44100Hz' and channel map 'front-left,front-right'.
Connection established.
Stream successfully created.
Buffer metrics: maxlength=4194304, tlength=352800, prebuf=349276, minreq=3528
Using sample spec 's16le 2ch 44100Hz', channel map 'front-left,front-right'.
Connected to device bluez_sink.8C_DE_52_1E_3C_F9 (index: 1, suspended: no).

Time: 0.000 sec; Latency: 2000000 usec.
root@imx6ulevk:~/test_files/av#

Any advice?