Re: [LAU] Jconvolver on Raspberry Pi

On 02/17/2016 12:33 PM, bricolodu wrote:
> Hello,
>
> I'm new to all of this.
> I'm trying to make FIR convolution on a Raspberry Pi 2.
> I have succeeded in making Jack2 working (Playback only, no full duplex).
> My alsa player can connect to Jack2 and jack2 to the hw I2S sound card,
> Fine.
>
> Now, this is what I'm trying to acheive :
> Start Jack2 (with jconvolver as input and I2S soundcard as output)
> Start jconvolver and Connect it to Jack2
> Start Alsaplayer and Connect it to jconvolver as the audio input
>
>
> Here is my asound.conf
> /# convert alsa API to jack API
> # use it with:
> # % aplay foo.wav
> # pcm type jack
> pcm.rawjack {
> type jack
> playback_ports {
> 0 system:jconv_1
> 1 system:jconv_2
> }
> capture_ports {
> 0 system:capture_1
> 1 system:capture_2
> }
> }
> # jackplug
> pcm.jack {
> type plug
> slave { pcm "rawjack" }
> hint {
> description "JACK Audio Connection Kit"
> }
> }
> # use following peripherical by defaut with alsa:
> pcm.!default {
> type plug
> slave { pcm "rawjack" }
> }/
>
> Here is my jconvolver config file: jconvolver filter-44100.conf
> /# Replace by whatever required...
> #
> /cd /root/folve/filter
> #
> #
> # in out partition maxsize density
> # --------------------------------------------------------
> /convolver/new 2 2 256 204800 0.5
> #
> #
> # num port name connect to
> # -----------------------------------------------
> /input/name 1 jconvolver
> /input/name 2 jconvolver
> #
> /output/name 1 jconv_1
> /output/name 2 jconv_2
> #
> #
> # in out partition maxsize
> # ---------------------------------------------------------------
> /convolver/new 2 2 1024 65536
> # in out gain delay offset length chan file
> # --------------------------------------------------------------------------
> /impulse/read 1 1 0.75 0 0 0 1
> T-Monacor_SPH30X.wav
> /impulse/read 2 2 0.75 0 0 0 1
> T-Monacor_SPH30X.wav
> /
>
> When I start jconvolver, I get the following error :
> *Can't initialise convolution engine.*

you need to use unique input names i guess (both seem to be called
"jconvolver"). since they will be prefixed by the client name anyways,
"in_L", "in_R", "out_L" and "out_R" are probably a good choice...

-- 
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT
http://stackingdwarves.net
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