Re: [Jack-Devel] JACK output via Bluetooth

On Wed, February 19, 2014 7:59 am, Holger Marzen wrote:
> I use JACK-based programs for making music, like Rosegarden and Qtractor.
>
> It would be nice to couple my notebook via Bluetooth to an HiFi amp to
> do some work that doesn't need low latencies and best audio quality,
> like arranging and recording MIDI-tracks.
>
> So I bought a Philips Bluetooth adapter and connected it to my HiFi amp.
>
> ALSA-clients can successfully output their audio to the device
> btphilips. My .asoundrc looks like:
>
> pcm.btphilips {
>     type plug
>     slave {
>         pcm {
>             type bluetooth
>             device "00:1D:DF:E4:59:B6"
>             profile "auto"
>             }
>           }
>      hint {
>           show on
>           description "Philips Bluetooth Adapter"
>           }
> }
>
> To use it with JACK I tried
>
> 1.) alsa_out
>     There is some recognizable signal but it's totally distorted. Maybe
>     a conversion from float to 16 bit integer ist needed.
>

Have you tried running in playback only and softmode with different period
sizes and sample rates:

jackd -d alsa -d btphilips -P -p1024 -r44100 -n 2 -s
jackd -d alsa -d btphilips -P -p1024 -r44100 -n 3 -s

jackd -d alsa -d btphilips -P -p1024 -r48000 -n 2 -s
jackd -d alsa -d btphilips -P -p1024 -r48000 -n 3 -s


- Also do you get any useful output from

cat /proc/asound/...







--
Patrick Shirkey
Boost Hardware Ltd

1392923372.30990_0.ltw:2,a <62920.86.105.95.182.1392923472.squirrel at boosthardware dot com>