General discussion of EcaSound multitrack audio editor

Carlos Pita | 13 Nov 2008 09:21

Re: Bug saving to mp3

I found a recent related thread here:

http://ubuntu-ky.ubuntuforums.org/showthread.php?t=961480

Regards
-Carlos

On Thu, Nov 13, 2008 at 5:58 AM, Carlos Pita <carlosjosepita <at> gmail.com> wrote:

Hi,

I've compiled ecasound 2.5.2 and i'm running this simple test:

ecasound -i my_file.wav -o my_file2.wav

That went fine. Same for other output formats, like flac or aiff. But when the turn comes to mp3, I get the output:

- [ Engine init - Driver start ] -----------------------------------------------
(eca-engine) Request start
(audioio-mp3) Starting to encode my_file2.mp3 with lame.
(audioio-forked-stream) Fork child-for-write: 'lame -b 128 -s 44.10 -x -S - %f'
(eca-engine) starting engine operation!
(audioio-mp3) Attempt to write after child process has terminated.
(eca-engine) output error - stop
(eca-engine) stopping engine operation!
(eca-engine) Signaling stop
(eca-engine) Signaling exit
(eca-engine) WARNING: An output object has raised an error! Possible causes: Out
... of disk space, permission denied, unable to launch external applications needed in
... processing, etc.
(eca-engine) Engine state when finishing: 4
(eca-control-base) Engine thread 14475 will exit.

I tried some 2.4.x versions of ecasound with the same result. My lame version is 3.98.2.

Any ideas?

Best regards
-Carlos

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Pablo Seibelt | Sicarul | 13 Nov 2008 15:20

Re: Bug saving to mp3

From personal experience, i recommend you to install ecasound from source, the lastest version, and remember to install mpg123 if you want to decode mp3 (sudo apt-get install mpg123 or sudo apt-get install mpg321, they are the same in my experience)

Good luck Carlos!

Bye

On 11/13/08, Carlos Pita <carlosjosepita <at> gmail.com> wrote:

I found a recent related thread here:

http://ubuntu-ky.ubuntuforums.org/showthread.php?t=961480

Regards
-Carlos

On Thu, Nov 13, 2008 at 5:58 AM, Carlos Pita <carlosjosepita <at> gmail.com> wrote:
Hi,

I've compiled ecasound 2.5.2 and i'm running this simple test:

ecasound -i my_file.wav -o my_file2.wav

That went fine. Same for other output formats, like flac or aiff. But when the turn comes to mp3, I get the output:

- [ Engine init - Driver start ] -----------------------------------------------
(eca-engine) Request start
(audioio-mp3) Starting to encode my_file2.mp3 with lame.
(audioio-forked-stream) Fork child-for-write: 'lame -b 128 -s 44.10 -x -S - %f'
(eca-engine) starting engine operation!
(audioio-mp3) Attempt to write after child process has terminated.
(eca-engine) output error - stop
(eca-engine) stopping engine operation!
(eca-engine) Signaling stop
(eca-engine) Signaling exit
(eca-engine) WARNING: An output object has raised an error! Possible causes: Out
... of disk space, permission denied, unable to launch external applications needed in
... processing, etc.
(eca-engine) Engine state when finishing: 4
(eca-control-base) Engine thread 14475 will exit.

I tried some 2.4.x versions of ecasound with the same result. My lame version is 3.98.2.

Any ideas?

Best regards
-Carlos

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Carlos Pita | 13 Nov 2008 16:52

Re: Bug saving to mp3

From personal experience, i recommend you to install ecasound from source, the lastest version, and remember to install

That's what I did, for latest stable release. I will give a try to the latest repository revision.

mpg123 if you want to decode mp3 (sudo apt-get install mpg123 or sudo apt-get install mpg321, they are the same in my experience)

I've mpg123 installed (but by pacman -S mpg123 :) ), anyway my problem is with encoding mp3, not with decoding.

Regards
-Carlos

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Carl Welch | 13 Nov 2008 18:40

Re: Bug saving to mp3

Hello everyone,

I am hoping to build a server-side app that will take multiple mp3 and  
mix them down to one single file. I was planning on using the php  
version of ecasound, but noticed it was many years old. After finally  
finding the newest version of ecasound, I was bummed to find there was  
no way to build a php extension or shared object (not that I even know  
how to do that) - I did notice that there was Rubyecasound. Now, I  
have zero experience with ruby. Is there any tutorials on how to  
implement that? or is there an easier way to do deal with ecasound on  
the server-side?

Can anyone point me in the right direction? PLEASE?!?!

thank you, in advance.
--

-- 
Carl Welch
http://www.carlwelch.com
http://www.jointjam.com
carlwelchdesign <at> gmail.com
805.403.4819

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Sergei Steshenko | 13 Nov 2008 21:55

Re: Bug saving to mp3


--- On Thu, 11/13/08, Carl Welch <carlwelchdesign <at> gmail.com> wrote:

> From: Carl Welch <carlwelchdesign <at> gmail.com>
> Subject: Re: [ecasound] Bug saving to mp3
> To: ecasound-list <at> lists.sourceforge.net
> Date: Thursday, November 13, 2008, 9:40 AM
> Hello everyone,
> 
> I am hoping to build a server-side app that will take
> multiple mp3 and  
> mix them down to one single file. I was planning on using
> the php  
> version of ecasound, but noticed it was many years old.
> After finally  
> finding the newest version of ecasound, I was bummed to
> find there was  
> no way to build a php extension or shared object (not that
> I even know  
> how to do that) - I did notice that there was Rubyecasound.
> Now, I  
> have zero experience with ruby. Is there any tutorials on
> how to  
> implement that? or is there an easier way to do deal with
> ecasound on  
> the server-side?
> 
> Can anyone point me in the right direction? PLEASE?!?!
> 
> thank you, in advance.
> -- 
> Carl Welch
> http://www.carlwelch.com
> http://www.jointjam.com
> carlwelchdesign <at> gmail.com
> 805.403.4819
> 
> 
> 
> 
> 
> -------------------------------------------------------------------------
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Is there a 'system' function in PHP - similar to the one in "C"/Perl ?

If yes, what else do you need ?

Regards,
  Sergei.

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Carl Welch | 13 Nov 2008 22:14

Re: Bug saving to mp3

Thank you Sergie.

Actually I have one more question - also sorry for hijacking this  
thread... did not mean to do that at all...

So, I uploaded ecasound to my server.
I started off with using "sh ./configure" and got the following:

Following packages are now configured:
ecasound:               yes (ecasound,libecasound,libecasoundc)
ecatools:               yes
pyecasound:             yes (as Python C extension module)
rubyecasound:           yes
libkvutils:             yes
-----------------------------------------------------------------
Compiler options:
CFLAGS:                  -ffast-math -fstrict-aliasing -funroll-loops - 
DNDEBUG -DENABLE_DBC -g -O2
CXXFLAGS:                -ffast-math -fstrict-aliasing -funroll-loops - 
DNDEBUG -DENABLE_DBC -g -O2
CPPFLAGS:                -D_REENTRANT
LDFLAGS:
-----------------------------------------------------------------
Following features were selected:
Debugging info:         no
Effects enabled:        yes
Largefile support:      no
Termcap:                ncurses
Use system readline:    yes
Use curses interface:   yes
Libaudiofile:           no
Libsndfile:             no
ALSA support:           no
OSS support:            yes
aRts support:           no
./configure: line 28606: 9: command not found
Libsamplerate support   no
-----------------------------------------------------------------
Following directories are used:
Directory prefix:       /usr/local
Python include dir:     /usr/include/python2.3
Python module dir:      NO
Ruby module dir:        /usr/lib/ruby/site_ruby/1.8
readline includes:      /usr/include/readline
Extra headers:
Extra libs:
-------------------------------------------------------------------
Type 'make' to compile the package and 'make install' to install.
Remember to use GNU Make, often installed as 'gmake'.
-------------------------------------------------------------------
******************************************************************
BUT
when I try make install, I get errors:

[carlwelc <at> host257 ecasound-2.5.2]$ make install
Making install in kvutils
make[1]: Entering directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
make[2]: Entering directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
test -z "/usr/local/lib" || mkdir -p -- "/usr/local/lib"
mkdir: cannot create directory `/usr/local': Permission denied
make[2]: *** [install-libLTLIBRARIES] Error 1
make[2]: Leaving directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
make[1]: *** [install-am] Error 2
make[1]: Leaving directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
make: *** [install-recursive] Error 1
[carlwelc <at> host257 ecasound-2.5.2]$

On Nov 13, 2008, at 12:55 PM, Sergei Steshenko wrote:
>>
>
> Is there a 'system' function in PHP - similar to the one in "C"/Perl ?
>
> If yes, what else do you need ?
>
> Regards,
>  Sergei.
>
>
>

--

-- 
Carl Welch
http://www.carlwelch.com
http://www.jointjam.com
carlwelchdesign <at> gmail.com
805.403.4819

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Sergei Steshenko | 13 Nov 2008 22:57

Re: Bug saving to mp3


--- On Thu, 11/13/08, Carl Welch <carlwelchdesign <at> gmail.com> wrote:

> From: Carl Welch <carlwelchdesign <at> gmail.com>
> Subject: Re: [ecasound] Bug saving to mp3
> To: sergstesh <at> yahoo.com
> Cc: ecasound-list <at> lists.sourceforge.net
> Date: Thursday, November 13, 2008, 1:14 PM

> BUT
> when I try make install, I get errors:
> 

With you settings you need to be 'root' to do 'make install'.

...

Have you ever programmed in any UNIX-like system ?

Regards,
  Sergei.

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Pierre Lorenzon | 24 Nov 2008 20:50

Recording and monitoring


Hi All,

Sorry if this question was already answered many times on the
list and simply tell me where is a good hint if necessary.

I would like to monitor what I am recording with
ecasound. Hence I used following command :

ecasound -c -a:1,2 -i alsa \
	 -a:1 -o alsa -a:2 -o file.wav

But it doesn't work : the sound "splits".

I suspect that I should use to separate alsa devices to record
and monitor but I do not see how to proceed. 

I think that it worked in the past with oss but oss is no
longer installed on my system.

Bests 

Pierre

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Kai Vehmanen | 25 Nov 2008 22:41

Re: Recording and monitoring

Hi,

On Mon, 24 Nov 2008, Pierre Lorenzon wrote:

> Sorry if this question was already answered many times on the
> list and simply tell me where is a good hint if necessary.
>
> I would like to monitor what I am recording with
> ecasound. Hence I used following command :

the best way is to enable analog loopback (aka HW monitoring) from 
alsamixer (this is supported by most soundcards). This way you hear what 
is being recorded with almost zero delay.

For instance on many consumer sound devices, you need to unmute the "Line" 
control in "Playback" section of alsamixer. On my M-Audio Delta44, I need 
to set HW outputs to "Digital Mixer" (also in "Playback" section of 
alsamixer).

To verify whether you have the right mixer settings (for hw monitoring), 
you should hear the live input played back on the outputs even though 
ecasound is not running.

> ecasound -c -a:1,2 -i alsa \
> 	 -a:1 -o alsa -a:2 -o file.wav
>
> But it doesn't work : the sound "splits".

That should work though. There will be some more delay than with
hw-monitoring, but it should work. What do you exactly mean by sound
"splitting"...?

--

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Pierre Lorenzon | 29 Nov 2008 07:55

Re: Recording and monitoring


Hi,

From: Kai Vehmanen <kvehmanen <at> eca.cx>
Subject: Re: [ecasound] Recording and monitoring
Date: Tue, 25 Nov 2008 23:41:51 +0200 (EET)

> Hi,
> 
> On Mon, 24 Nov 2008, Pierre Lorenzon wrote:
> 
> > Sorry if this question was already answered many times on the
> > list and simply tell me where is a good hint if necessary.
> >
> > I would like to monitor what I am recording with
> > ecasound. Hence I used following command :
> > ecasound -c -a:1,2 -i alsa \
> > 	 -a:1 -o alsa -a:2 -o file.wav
> >
> > But it doesn't work : the sound "splits".
> 
> That should work though. There will be some more delay than with
> hw-monitoring, but it should work. What do you exactly mean by sound
> "splitting"...?

  Indeed I get following message :
  WARNING: ALSA playback underrun, glitches in audio playback
  possible .... 

  It seems that I can correct this problem by passing
  -f:16,2,48000 and -z:intbuf options to ecasound. I saw that
  somebody did that by reading the mailing list archive. 

  Regards 

  Pierre

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Pierre Lorenzon | 26 Nov 2008 11:07

Re: Recording and monitoring


Hi,

Julien second solution works.

From: Kai Vehmanen <kvehmanen <at> eca.cx>
Subject: Re: [ecasound] Recording and monitoring
Date: Tue, 25 Nov 2008 23:41:51 +0200 (EET)

> Hi,
> 
> On Mon, 24 Nov 2008, Pierre Lorenzon wrote:
> 
> > Sorry if this question was already answered many times on the
> > list and simply tell me where is a good hint if necessary.
> >
> > I would like to monitor what I am recording with
> > ecasound. Hence I used following command :
> 
> the best way is to enable analog loopback (aka HW monitoring) from 
> alsamixer (this is supported by most soundcards). This way you hear what 
> is being recorded with almost zero delay.

  Not clear to waht it corresponds on my card. I have an
  onboard chip essentially intel ich9.

> 
> For instance on many consumer sound devices, you need to unmute the "Line" 
> control in "Playback" section of alsamixer. On my M-Audio
> Delta44, I need 

  Hum, if I enable the line playback I am not sure that what I
  hear is waht is actually captured. In fact when modifying
  capture volume it does not change anything in what I
  hear. That's why I whanted to use ecasound to monitor
  actually what is being recorded. 

> to set HW outputs to "Digital Mixer" (also in "Playback" section of 
> alsamixer).

  Hum I don't see to waht it corresponds on my own chip.

> 
> To verify whether you have the right mixer settings (for hw monitoring), 
> you should hear the live input played back on the outputs even though 
> ecasound is not running.
  Yep but line playback is not capture playback in my opinion. 

> 
> > ecasound -c -a:1,2 -i alsa \
> > 	 -a:1 -o alsa -a:2 -o file.wav
> >
> > But it doesn't work : the sound "splits".
> 
> That should work though. There will be some more delay than with
> hw-monitoring, but it should work. What do you exactly mean by sound
> "splitting"...?

  I mean taht I can hear small sequences of sound of half a
  second separated by blanks ! As if playback were continuously
  interrupted. When using a loop as recommanded by Julien this
  problem does not occur any longer.

  Regards

  Pierre
> 
> -- 

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Julien Claassen | 25 Nov 2008 11:01

Re: Recording and monitoring

Hi!
   You have at least two alternatives, that I can see.
1. Use JACK, makes a lot of things easier:
jack_connect system:capture_1 system:playback_1
jack_connect system:capture_2 system:playback_2
# your souncard inputs are connected to your outputs, that's the monitor.
ecasound -c -a:1 -i jack -o out.wav
ecasound ('h' for help)> engine-launch
jack_connect system:capture_1 ecasound:in_1
jack_connect system:capture_2 ecasound:in_2
   Now just start recording. The same goes for softsynths, just exchange your 
system:capture_N to the corresponding port of your softsynth (fluidsynth, 
LinuxSampler, aeolus, etc. etc.)

2. Use loop devices: Not 100% sure, but 99%:
ecasound -a:1 -i alsa -o loop,1 -a:2 -i loop,1 -o alsa -a:3 -i loop,1 -o 
file.wav
   About your alsa IO see the ecasound manual, there you find a bit about ALSA 
device naming with ecasound. Also have a look at the alsa-wiki at 
alsa-project.org.
   HTH.
   Kindest regards
           Julien

--------
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======== FIND MY WEB-PROJECT AT: ========
http://ltsb.sourceforge.net
the Linux TextBased Studio guide
======= AND MY PERSONAL PAGES AT: =======
http://www.juliencoder.de

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Pierre Lorenzon | 26 Nov 2008 10:06

Re: Recording and monitoring


Hi Julien,

Before asking my question I read the tips you wrote about these
subject. Thanks for this work but I did not find any answer to
this particular question in them.

From: Julien Claassen <julien <at> c-lab.de>
Subject: Re: [ecasound] Recording and monitoring
Date: Tue, 25 Nov 2008 11:01:16 +0100 (CET)

> Hi!
>    You have at least two alternatives, that I can see.
> 1. Use JACK, makes a lot of things easier:
> jack_connect system:capture_1 system:playback_1
> jack_connect system:capture_2 system:playback_2
> # your souncard inputs are connected to your outputs, that's the monitor.
> ecasound -c -a:1 -i jack -o out.wav
> ecasound ('h' for help)> engine-launch
> jack_connect system:capture_1 ecasound:in_1
> jack_connect system:capture_2 ecasound:in_2

  Things might be easier but I suspect with less understanding
  of the process.Moreover I'd prefer not to install jack on my
  system if things might function without it. 

>    Now just start recording. The same goes for softsynths, just exchange your 
> system:capture_N to the corresponding port of your softsynth (fluidsynth, 
> LinuxSampler, aeolus, etc. etc.)
> 
> 2. Use loop devices: Not 100% sure, but 99%:
> ecasound -a:1 -i alsa -o loop,1 -a:2 -i loop,1 -o alsa -a:3
> -i loop,1 -o 

  up to the syntax which is not completely correct :

  ecasound -a:1 -i alsa -o loop,1 -a:1,2 -i loop,1 -a:2 -o alsa
  -a:3 -o file.wav
  It works.

> file.wav
>    About your alsa IO see the ecasound manual, there you find a bit about ALSA 
> device naming with ecasound. Also have a look at the alsa-wiki at 
> alsa-project.org.

  In my opinion that's precisely the point were things are not
  completely clear : What correspondance between alsa hardware
  naming in ecasound and sound devices. If I get understand
  this point I'll try to write something. Anyway I suspect that
  it might be hardware dependent. 

>    HTH.
>    Kindest regards
>            Julien

	     Thanks,

	     Pierre
> 
> --------
> Music was my first love and it will be my last (John Miles)
> 
> ======== FIND MY WEB-PROJECT AT: ========
> http://ltsb.sourceforge.net
> the Linux TextBased Studio guide
> ======= AND MY PERSONAL PAGES AT: =======
> http://www.juliencoder.de

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Tomás Arribas | 13 Nov 2008 22:36

Re: Bug saving to mp3

2008/11/13 Carl Welch <carlwelchdesign <at> gmail.com>:
> BUT
> when I try make install, I get errors:
>
> [carlwelc <at> host257 ecasound-2.5.2]$ make install
> Making install in kvutils
> make[1]: Entering directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
> make[2]: Entering directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
> test -z "/usr/local/lib" || mkdir -p -- "/usr/local/lib"
> mkdir: cannot create directory `/usr/local': Permission denied
> make[2]: *** [install-libLTLIBRARIES] Error 1
> make[2]: Leaving directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
> make[1]: *** [install-am] Error 2
> make[1]: Leaving directory `/home2/carlwelc/ecasound-2.5.2/kvutils'
> make: *** [install-recursive] Error 1

You must have root privileges for the "make install" to work. Or you
can try a local installation in your home directory if you can't be
root, something like "./configure --prefix=/home/user/apps" should
make the installation to work in home/user/apps or whatever you
choose.

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Pedro Lopez-Cabanillas | 13 Nov 2008 17:09

Re: Bug saving to mp3

On Thu, Nov 13, 2008 at 4:52 PM, Carlos Pita <carlosjosepita <at> gmail.com> wrote:

From personal experience, i recommend you to install ecasound from source, the lastest version, and remember to install

That's what I did, for latest stable release. I will give a try to the latest repository revision.

mpg123 if you want to decode mp3 (sudo apt-get install mpg123 or sudo apt-get install mpg321, they are the same in my experience)

I've mpg123 installed (but by pacman -S mpg123 :) ), anyway my problem is with encoding mp3, not with decoding.

Ecasound uses lame to encode mp3. Have you installed lame?.

http://www.archlinux.org/packages/extra/i686/lame/

Regards,
Pedro

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Carlos Pita | 13 Nov 2008 17:13

Re: Bug saving to mp3

Ecasound uses lame to encode mp3. Have you installed lame?.

http://www.archlinux.org/packages/extra/i686/lame/

Of course. The exact version is given in my first post.

Regards
-Carlos

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