20 Oct
2004
20 Oct
'04
5:47 p.m.
Hi,
I'm trying to record multiple tracks with ecasound and a Delta 1010LT, while
monitoring the process. I tried the following ecasound command without luck (I'm new
to ecasound):
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8 -f:16,8,48000 -i alsa,default \
-a:1 -o mono-1.wav \
-a:2 -o mono-2.wav -erc:2,1 \
-a:3 -o mono-3.wav -erc:3,1 \
-a:4 -o mono-4.wav -erc:4,1 \
-a:5 -o mono-5.wav -erc:5,1 \
-a:6 -o mono-6.wav -erc:6,1 \
-a:7 -o mono-7.wav -erc:7,1 \
-a:8 -o mono-8.wav -erc:8,1 \
-a:all -o alsa,default
I can hear the inputs, but the mono-*.wav files are essentially empty
(44 bytes each). If I remove the last line, the mono-*.wav files record
ok. But, of course, I can't hear it while recording. Can anybody tell
me what I'm doing wrong (I suspect it is something about opening
alsa,default twice, but I don't really know).
(if this looks familiar, I sent a message yesterday under the subject "xrun
madness." I haven't heard back anything and I'm hoping to try this tonight)
Thanks!
Joel
20 Oct
20 Oct
11:35 p.m.
On Wed, Oct 20, 2004 at 07:29:37PM +0000, cv223(a)comcast.net wrote:
Hi,
I'm trying to record multiple tracks with ecasound and a Delta 1010LT, while
monitoring the process. I tried the following ecasound command without luck (I'm new
to ecasound):
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8 -f:16,8,48000 -i alsa,default \
-a:1 -o mono-1.wav \
-a:2 -o mono-2.wav -erc:2,1 \
-a:3 -o mono-3.wav -erc:3,1 \
-a:4 -o mono-4.wav -erc:4,1 \
-a:5 -o mono-5.wav -erc:5,1 \
-a:6 -o mono-6.wav -erc:6,1 \
-a:7 -o mono-7.wav -erc:7,1 \
-a:8 -o mono-8.wav -erc:8,1 \
-a:all -o alsa,default
I can hear the inputs, but the mono-*.wav files are essentially empty
(44 bytes each). If I remove the last line, the mono-*.wav files record
ok. But, of course, I can't hear it while recording. Can anybody tell
me what I'm doing wrong (I suspect it is something about opening
alsa,default twice, but I don't really know).
(if this looks familiar, I sent a message yesterday under the subject "xrun
madness." I haven't heard back anything and I'm hoping to try this tonight)
Yup. this is a common stumbling point with ecasound. Each chain can have
exactly one input and one output. So, to have two outputs you need to
double up your chains.
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 -f:16,8,48000 -i alsa,default
\
-a:1 -o mono-1.wav \
-a:2 -o mono-2.wav -erc:2,1 \
-a:3 -o mono-3.wav -erc:3,1 \
-a:4 -o mono-4.wav -erc:4,1 \
-a:5 -o mono-5.wav -erc:5,1 \
-a:6 -o mono-6.wav -erc:6,1 \
-a:7 -o mono-7.wav -erc:7,1 \
-a:8 -o mono-8.wav -erc:8,1 \
-a:9,10,11,12,13,14,15,16 -o alsa,default
I can't remember exactly right now, but you may need to set
-f:16,1,48000 for your file outputs so you don't end up writing 8x
8channel wav files. Anyway, the idea of doubling up chains is the main
point and should at least get you closer to your goal.
-Eric Rz.
21 Oct
21 Oct
2:42 a.m.
Yup. this is a common stumbling point with ecasound.
Each chain can have
exactly one input and one output. So, to have two outputs you need to
double up your chains.
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 -f:16,8,48000 -i
alsa,default \
-a:1 -o mono-1.wav \
-a:2 -o mono-2.wav -erc:2,1 \
-a:3 -o mono-3.wav -erc:3,1 \
-a:4 -o mono-4.wav -erc:4,1 \
-a:5 -o mono-5.wav -erc:5,1 \
-a:6 -o mono-6.wav -erc:6,1 \
-a:7 -o mono-7.wav -erc:7,1 \
-a:8 -o mono-8.wav -erc:8,1 \
-a:9,10,11,12,13,14,15,16 -o alsa,default
I can't remember exactly right now, but you may need to set
-f:16,1,48000 for your file outputs so you don't end up writing 8x
8channel wav files. Anyway, the idea of doubling up chains is the main
point and should at least get you closer to your goal.
The last "-f" will effect all of the ones after it. So set them as
needed. I think this is what it should look like...
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
-f:16,8,48000 -i alsa,default \
-a:1 -f:16,1,48000 -o mono-1.wav \
-a:2 -f:16,1,48000 -o mono-2.wav -erc:2,1 \
-a:3 -f:16,1,48000 -o mono-3.wav -erc:3,1 \
-a:4 -f:16,1,48000 -o mono-4.wav -erc:4,1 \
-a:5 -f:16,1,48000 -o mono-5.wav -erc:5,1 \
-a:6 -f:16,1,48000 -o mono-6.wav -erc:6,1 \
-a:7 -f:16,1,48000 -o mono-7.wav -erc:7,1 \
-a:8 -f:16,1,48000 -o mono-8.wav -erc:8,1 \
-a:9,10,11,12,13,14,15,16 -f:16,2,48000 -o alsa,default
I would also suggest creating an .ecs file (plain text file) with the
chains like this (no continuation slashes nessesay)...
-a:1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 -f:16,8,48000 -i alsa,default
-a:1 -f:16,1,48000 -o mono-1.wav
-a:2 -f:16,1,48000 -o mono-2.wav -erc:2,1
-a:3 -f:16,1,48000 -o mono-3.wav -erc:3,1
-a:4 -f:16,1,48000 -o mono-4.wav -erc:4,1
-a:5 -f:16,1,48000 -o mono-5.wav -erc:5,1
-a:6 -f:16,1,48000 -o mono-6.wav -erc:6,1
-a:7 -f:16,1,48000 -o mono-7.wav -erc:7,1
-a:8 -f:16,1,48000 -o mono-8.wav -erc:8,1
-a:9,10,11,12,13,14,15,16 -f:16,2,48000 -o alsa,default
run the file with the command...
ecasound -r -b:256 -c -s /path/to/file.ecs
(-c is interactive mode... you can do fastforward, stop, rewind... type
"h" for help while in interactive mode)
While in interactive mode, you can also do "cs-save-as NameOfNew.ecs" so
you can see how a well formatted ecs file should look.
Rocco
23 Oct
23 Oct
12:40 p.m.
On Wed, 20 Oct 2004 cv223(a)comcast.net wrote:
I'm trying to record multiple tracks with ecasound
and a Delta 1010LT,
while monitoring the process. I tried the following ecasound command
without luck (I'm new to ecasound):
The easiest way to achieve this is to use the soundcard's own mixer for
monitoring the incoming audio signals.
With Delta1010LT (and other ice17xx cards), launch envy24control and
on the 'Monitor mixer' tab turn on volume for for "Hw in 1", "Hw in
2" and
so on, and then on 'Patchbay / router' tab select "Digital Mix" as the
source of "Hw out 1", and others.
With consumer cards, the same can be achieve by unmuting "Line in" (or
"Mic in") and turning up their volume.
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8 -f:16,8,48000 -i
alsa,default \
-a:1 -o mono-1.wav \
-a:2 -o mono-2.wav -erc:2,1 \
-a:3 -o mono-3.wav -erc:3,1 \
-a:4 -o mono-4.wav -erc:4,1 \
-a:5 -o mono-5.wav -erc:5,1 \
-a:6 -o mono-6.wav -erc:6,1 \
-a:7 -o mono-7.wav -erc:7,1 \
-a:8 -o mono-8.wav -erc:8,1 \
-a:all -o alsa,default
If you for some reason want to monitor audio specifically by routing the
audio through ecasound, the correct syntax would be:
ecasound -r -b:256 -a:1,2,3,4,5,6,7,8,mon1 -f:16,8,48000 -i alsa,default \
-f:16,1,48000 \
-a:1 -o mono-1.wav \
-a:2 -o mono-2.wav -erc:2,1 \
-a:3 -o mono-3.wav -erc:3,1 \
-a:4 -o mono-4.wav -erc:4,1 \
-a:5 -o mono-5.wav -erc:5,1 \
-a:6 -o mono-6.wav -erc:6,1 \
-a:7 -o mono-7.wav -erc:7,1 \
-a:8 -o mono-8.wav -erc:8,1 \
-f:16,8,48000 \
-a:mon1 -o alsa,default
I.e. we route the 8ch audio stream to mono chains 1-8, and to 8ch chain
labeled 'mon1'. Next we write the mono chains to mono-X.wav files, and
output the whole 8ch chain to the alsa output device.
I can hear the inputs, but the mono-*.wav files are
essentially empty
(44 bytes each). If I remove the last line, the mono-*.wav files record
ok. But, of course, I can't hear it while recording. Can anybody tell
As others already noted, you can only connect a chain to one output (same
applies for input). I really should add more runtime checks so that
ecasound would give a little more informative error messages in these
scenarios.
--
http://www.eca.cx
Audio software for Linux!
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3 comments
4 participants
participants (4)
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cv223＠comcast.net -
Eric Dantan Rzewnicki -
Kai Vehmanen -
LinuxMedia