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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