how to resample after a LADSPA plugin ?

Hello,

I have the following command line:

ecasound -D -z:nodb -f 16,2,44100 -i stdin -eli:1030 -b 4096 -ev -x -f s16_le,2,44100 -o alsahw,0,0

which works as expected. It is a part of longer chain, so data is piped into stdin.

I want to do two things:

1) replace 's16_le,2,44100' with 's16_le,2,88200', i.e to make ALSA device work with 88200Hz sample rate;

2) insert resampling just before it, but _after_ the LADSPA plugin, i.e. after '-eli:1030'.

How can I do this ?

Thanks,
  Sergei.

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ai-index-select, ai-remove and ao-index-select, ao-remove not working properly

Quick assessment of the situation, then my complete session...

It seems that when there are multiple input objects of the same name or 
multiple output objects of the same name, 'ai-index-select', 'ai-remove' 
and 'ao-index-select', 'ao-remove' removes the wrong object.

It does (not) seem to have this confusion when the input objects have 
different names or the output objects have different names.

Also, it seems (possibly) that in certain situations, it seems to think 
it removed the object from a different chain instead of the chain that 
it actually removed it from.

Here's my session...

I have an ecs file that reads:

#### START ECS ####
# general
-b:512 -r:50 -z:nointbuf -z:nodb -n:"Main" -X -z:noxruns -z:nopsr 
-z:mixmode,sum

# audio inputs
-a:1 -f:24,1,96000 -i:1.wav
-a:2 -f:24,1,96000 -i:2.wav
-a:3 -f:24,1,96000 -i:3.wav

# audio outputs
-a:1 -f:24,2,96000 -o:jack,system
-a:2 -f:24,2,96000 -o:jack,system
-a:3 -f:24,2,96000 -o:jack,system

# chain operators and controllers
-a:1 -chcopy:1,2 -epp:13 -ea:155
-a:2 -chcopy:1,2 -epp:85 -ea:143
-a:3 -chcopy:1,2 -epp:50 -ea:24
#### END ECS ####

ecasound> c-select 2
ecasound> ai-status

### Audio input/output status (chainsetup 'Main') ###
Input (1): "1.wav," - [RIFF wave file]
  -> connected to chains "1": position (2.528/60.088) seconds.
  -> open, , s24_le/1ch/96000Hz, buffer 512.
Input (2): "2.wav," - [RIFF wave file]
  -> connected to chains "2": position (2.528/59.865) seconds.
  -> open, , s24_le/1ch/96000Hz, buffer 512.
Input (3): "3.wav," - [RIFF wave file]
  -> connected to chains "3": position (2.528/69.153) seconds.
  -> open, , s24_le/1ch/96000Hz, buffer 512.
Output (1): "jack,system," - [JACK interface]
  -> connected to chains "1": realtime-device; position 242688, delay 0.
  -> open, f32_le/2ch/96000Hz, buffer 512.
Output (2): "jack,system," - [JACK interface]
  -> connected to chains "2": realtime-device; position 242688, delay 0.
  -> open, f32_le/2ch/96000Hz, buffer 512.
Output (3): "jack,system," - [JACK interface]
  -> connected to chains "3": realtime-device; position 242688, delay 0.
  -> open, f32_le/2ch/96000Hz, buffer 512.

ecasound> ai-index-select 2
ecasound> ai-remove

(eca-control) WARNING: This operation requires that chainsetup is 
disconnected. Temporarily disconnecting...
- [ Controller/Processing stopped (cond) ] -------------------------------
(audioio_jack_manager) JACK transport: at ecasound stop JACK state is 
STOPPED (position 2.528sec)
- [ Engine exiting ] -----------------------------------------------------
(eca-control-objects) Disconnecting chainsetup:  "Main".
(eca-control-objects) Removing selected audio input "2.wav" from 
selected chains.
(eca-chainsetup) Unable to connect: Chain "2" is not valid. Following 
errors were detected:
(eca-chainsetup) Chain "2" is not connected to any input. All chains 
must have exactly one valid input. (2.1-NO-CHAIN-INPUT)
(eca-chainsetup) WARNING: Input "3.wav" is not connected to any chain. 
(3.1-DISCON-INPUT)
ERROR: Can't reconnect chainsetup.

As you'll see (below), it removed the correct input object (possibly 
because the names are all different?), but what about "WARNING: Input 
"3.wav" is not connected to any chain. (3.1-DISCON-INPUT)"?

ecasound> cs-save-as 1.ecs

1.ecs reads...

#### START ECS ####
# general
-b:512 -r:50 -z:nointbuf -z:nodb -n:"Main" -X -z:noxruns -z:nopsr 
-z:mixmode,sum

# audio inputs
-a:1 -f:s24_le,1,96000 -i:1.wav,
-a:3 -f:s24_le,1,96000 -i:3.wav,

# audio outputs
-a:1 -f:f32_le,2,96000 -o:jack,system,
-a:2 -f:f32_le,2,96000 -o:jack,system,
-a:3 -f:f32_le,2,96000 -o:jack,system,

# chain operators and controllers
-a:1 -chcopy:1.00,2.00 -epp:13.00 -ea:155.00
-a:2 -chcopy:1.00,2.00 -epp:85.00 -ea:143.00
-a:3 -chcopy:1.00,2.00 -epp:50.00 -ea:24.00
#### END ECS ####

ecasound> ai-status

### Audio input/output status (chainsetup 'Main') ###
Input (1): "1.wav," - [RIFF wave file]
  -> connected to chains "1": position (2.528/60.088) seconds.
  -> closed, audio format not available until object is opened.
Input (2): "3.wav," - [RIFF wave file]
  -> connected to chains "3": position (2.528/69.153) seconds.
  -> closed, audio format not available until object is opened.
Output (1): "jack,system," - [JACK interface]
  -> connected to chains "1": realtime-device; position 242688, delay 0.
  -> closed, f32_le/2ch/96000Hz, buffer 512.
Output (2): "jack,system," - [JACK interface]
  -> connected to chains "2": realtime-device; position 242688, delay 0.
  -> closed, f32_le/2ch/96000Hz, buffer 512.
Output (3): "jack,system," - [JACK interface]
  -> connected to chains "3": realtime-device; position 242688, delay 0.
  -> closed, f32_le/2ch/96000Hz, buffer 512.

ecasound> ao-index-select 2
ecasound> ao-remove

(eca-control-objects) Removing selected audio output "jack" from 
selected chains.

ecasound> c-selected
2

ecasound> cs-save-as 1.ecs

1.ecs reads...

#### START ECS ####
# general
-b:512 -r:50 -z:nointbuf -z:nodb -n:"Main" -X -z:noxruns -z:nopsr 
-z:mixmode,sum

# audio inputs
-a:1 -f:s24_le,1,96000 -i:1.wav,
-a:3 -f:s24_le,1,96000 -i:3.wav,

# audio outputs
-a:1 -f:f32_le,2,96000 -o:jack,system,
-a:2 -f:f32_le,2,96000 -o:jack,system,

# chain operators and controllers
-a:1 -chcopy:1.00,2.00 -epp:13.00 -ea:155.00
-a:2 -chcopy:1.00,2.00 -epp:85.00 -ea:143.00
-a:3 -chcopy:1.00,2.00 -epp:50.00 -ea:24.00
#### END ECS ####

It removed the audio output object on chain 3 instead of chain 2.

I did the exact same thing with alsa inputs and outputs and got exactly 
the same outcome.

Also, I noticed if I have this ecs file...

### START ECS ###
# general
-b:512 -r:50 -z:nointbuf -z:nodb -n:"Main" -X -z:noxruns -z:nopsr 
-z:mixmode,sum

# audio inputs
-a:1 -f:16,1,48000 -i:jack,system
-a:2 -f:16,2,48000 -i:jack,system
-a:3 -f:16,3,48000 -i:jack,system

# audio outputs
-a:1 -f:16,2,48000 -o:jack,system
-a:2 -f:16,2,48000 -o:jack,system
-a:3 -f:16,2,48000 -o:jack,system

# chain operators and controllers
-a:1 -chcopy:1,2 -epp:13 -ea:155
-a:2 -chmove:2,1 -chcopy:1,2 -epp:85 -ea:143
-a:3 -chmove:3,1 -chcopy:1,2 -epp:50 -ea:24
### END ECS ###

ecasound> ai-status

### Audio input/output status (chainsetup 'Main') ###
Input (1): "jack,system," - [JACK interface]
  -> connected to chains "1": realtime-device; position 0, delay 0.
  -> closed, s16_le/1ch/48000Hz, buffer 512.
Input (2): "jack,system," - [JACK interface]
  -> connected to chains "2": realtime-device; position 0, delay 0.
  -> closed, s16_le/2ch/48000Hz, buffer 512.
Input (3): "jack,system," - [JACK interface]
  -> connected to chains "3": realtime-device; position 0, delay 0.
  -> closed, s16_le/3ch/48000Hz, buffer 512.
Output (1): "jack,system," - [JACK interface]
  -> connected to chains "1": realtime-device; position 0, delay 0.
  -> closed, s16_le/2ch/48000Hz, buffer 512.
Output (2): "jack,system," - [JACK interface]
  -> connected to chains "2": realtime-device; position 0, delay 0.
  -> closed, s16_le/2ch/48000Hz, buffer 512.
Output (3): "jack,system," - [JACK interface]
  -> connected to chains "3": realtime-device; position 0, delay 0.
  -> closed, s16_le/2ch/48000Hz, buffer 512.

ecasound> ai-index-select 2
ecasound> ai-remove
ecasound> ao-index-select 2
ecasound> ao-remove
ecasound> c-select 3
ecasound> c-clear
ecasound> cs-save-as 1.ecs

1.ecs reads...

### START ECS ###
# general
-b:512 -r:50 -z:nointbuf -z:nodb -n:"Main" -X -z:noxruns -z:nopsr 
-z:mixmode,sum

# audio inputs
-a:1 -f:s16_le,1,48000 -i:jack,system,
-a:2 -f:s16_le,2,48000 -i:jack,system,

# audio outputs
-a:1 -f:s16_le,2,48000 -o:jack,system,
-a:2 -f:s16_le,2,48000 -o:jack,system,

# chain operators and controllers
-a:1 -chcopy:1.00,2.00 -epp:13.00 -ea:155.00
-a:2 -chmove:2.00,1.00 -chcopy:1.00,2.00 -epp:85.00 -ea:143.00
### END ECS ###

Even though it improperly removed the input and output objects (and 
chain) for chain 3 instead of 2, I cleared the last remains of chain 3 
(c-clear) and it should run... but...

ecasound> t

(eca-chainsetup) Unable to connect: Chain "3" is not valid. Following 
errors were detected:
(eca-chainsetup) Chain "3" is not connected to any input. All chains 
must have exactly one valid input. (2.1-NO-CHAIN-INPUT)
(eca-chainsetup) Chain "3" is not connected to any output. All chains 
must have exactly one valid output. (2.2-NO-CHAIN-OUTPUT)
ERROR:  Selected chainsetup cannot be connected. Can't perform requested 
action.

ecasound> c-list
1,2,3

Also... when there are input objects that that have the same name mixed 
with input objects that have different names, you get the wrong input 
objects being removed in a more random way. This happens for output 
objects that also have similar names mixed with different names.

Unfortunately, this has halted my new approach of deleting tracks or 
effects in a more robust way in my front end. I could just stick with 
adding a whole chainsetup each time I delete a track (chain) or effect 
(chain), but it's not as robust as doing it chain by chain.

Thanks,
Rocco

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Unable to launch fake-stereo

 Trying to convert a mono file
 with
 ecasound -i filea -etf:3 -o fileb

 **************************************************************************
*        ecasound v2.7.0 (C) 1997-2009 Kai Vehmanen and others    (B
**************************************************************************
(eca-session) Set debug level to: 319
(eca-session) Session created
(audioio-db-server) constructor
(eca-chainsetup) Rtcaps detected.
(eca-chainsetup-parser) Interpreting object option "-f:s16_le,2,44100,i".
(eca-chainsetup-parser) Changed active format to (bits/channels/srate/interleave): s16_le/2/44100/i
(eca-chainsetup) sample rate change, chainsetup untitled-chainsetup to rate 44100.
(eca-chainsetup-parser) Interpreting object option "-z:mixmode,avg".
(eca-static-object-maps) register_chain_operator_objects()
(eca-static-object-maps) register_controller_objects()
(eca-chainsetup-parser) Interpreting global option "-i:05_Slow_Hands.mp3".
(eca-chainsetup-parser) Interpreting global option "-etf:3".
(eca-chainsetup-parser) Interpreting global option "-o:new.05_Slow_Hands.mp3".
(eca-chain) constructor: CHAIN
(eca-chainsetup) Chain "default" created.
(eca-chainsetup-parser) Interpreting object option "-i:05_Slow_Hands.mp3".
(eca-static-object-maps) register_audio_io_rt_objects()
(eca-static-object-maps) register_audio_io_nonrt_objects()
(eca-static-object-maps) All libsndfile supported extensions:
... aiff,au,avr,caf,flac,htk,iff,mat,mat,mpc,oga,paf,pvf,raw,rf64,sd2,sds,sf,voc,w64,wav,wav,wav,wve,xi,
(eca-object-factory) Object "-i:05_Slow_Hands.mp3" created, type "Mp3 stream". Has 2 parameter(s)
(variable: no).
(eca-chainsetup-parser) adding file "05_Slow_Hands.mp3".
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio-db-client) DB-client created for 05_Slow_Hands.mp3.
(audioio) set srate, aobj "DB => Mp3 stream:uninitialized" to 44100.
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(eca-chainsetup) Assigning file to chains: default
(eca-chainsetup-parser) Interpreting object option "-etf:3".
(eca-object-factory) Creating chain operator "Fake stereo"
(eca-object-factory) Setting parameters: delay-time-msec = 3.000
(eca-chainsetup) Adding chainop to chain default.
(audiofx) Setting samplerate to 44100 for object Fake stereo. Old value 384000.
(eca-chainsetup-parser) Interpreting object option "-o:new.05_Slow_Hands.mp3".
(eca-object-factory) Object "-o:new.05_Slow_Hands.mp3" created, type "Mp3 stream". Has 2
parameter(s) (variable: no).
(eca-chainsetup-parser) adding file "new.05_Slow_Hands.mp3".
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(audioio-db-client) DB-client created for new.05_Slow_Hands.mp3.
(audioio) set srate, aobj "DB => Mp3 stream:uninitialized" to 44100.
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(eca-chainsetup) Assigning file to chains: default
(eca-chainsetup) Chainsetup "untitled-chainsetup"
(eca-control) ECA_CONTROL constructor
(eca-session) Connecting chainsetup
(eca-chainsetup) bmode-selection case-5
(eca-chainsetup) "nonrt" buffering mode selected.
(eca-chainsetup) Set buffering parameters to: 
--cut--
buffersize: 1024
raised_priority: 0
sched_priority: 50
double buffering: 0
double buffer size: 100000
max buffers: 1
--cut--
(eca-chainsetup) Switching to direct mode.
(audioio-db-client) destructor 05_Slow_Hands.mp3.
(audioio-db-server) unregister_client Mp3 stream.
(audioio-db-server) unregister_client failed (2)
(audioio-db-client) destructor new.05_Slow_Hands.mp3.
(audioio-db-server) unregister_client Mp3 stream.
(audioio-db-server) unregister_client failed (2)
(audioio-mp3) Found mp3 header at offset 25882
(audioio-mp3) Found mp3 header at offset 25886
(audioio-mp3) Total file size (bytes): 4446555.00
(audioio-mp3) Bitrate (bits/s): 192000.00
(audioio-mp3) Sampling frequncy (Hz): 44100.00
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio-mp3) Total length (frames): 7092
(audioio-mp3) Total length (seconds): 186
(audioio-mp3) Pcm per mp3 frames: 1152
(eca-chainsetup) Opened input "05_Slow_Hands.mp3", mode "read". Format: s16_le, channels 2, srate
44100, interleaved (locked params).
(eca-chainsetup) sample rate change, chainsetup untitled-chainsetup to rate 44100.
(audioio) set srate, aobj "Mp3 stream:05_Slow_Hands.mp3" to 44100.
(audioio) set srate, aobj "Mp3 stream:new.05_Slow_Hands.mp3" to 44100.
(eca-chain) sample rate change, chain 'default' object 'Fake stereo' rate 44100.
(audiofx) Setting samplerate to 44100 for object Fake stereo. Old value 44100.
(eca-chainsetup) Opened output "new.05_Slow_Hands.mp3", mode "write". Format: s16_le, channels 2,
srate 44100, interleaved (locked params).
(eca-session) Chainsetup connected
- [ Connected chainsetup: "untitled-chainsetup"(B ] ------------------------
- [ Controller/Starting batch processing(B ] -------------------------------
(eca-engine) ECA_ENGINE constructor
(eca-engine) Prefill loops: 7 (blocksize 1024).
(audiofx) Init w/ samplerate 44100 for object Fake stereo.
(eca-chain) Initialized chain default with 1 chainops and 0 gcontrollers. Sbuf points to 167939360.
(eca-control-base) Engine thread started with pid: 28131
- [ Engine - Driver start(B ] ----------------------------------------------
(eca-engine) Request start
(audioio-mp3) mpg123 --stereo -r %s -b0 -s -k 0 %f
(audioio-forked-stream) Fork child-for-read: 'mpg123 --stereo -r 44100 -b0 -s -k 0 %f'
(audioio-mp3) Starting to encode new.05_Slow_Hands.mp3 with lame.
(audioio-forked-stream) Fork child-for-write: '/usr/local/bin/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) engine error, exit
(eca-engine) stopping engine operation!
(audioio-forked-stream) Sending SIGKILL to child process related to: 05_Slow_Hands.mp3
(audioio-forked-stream) Child process exit ok: 05_Slow_Hands.mp3
(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 28131 will exit.

- [ Controller/Batch processing finished (-3)(B ] --------------------------
(eca-control-base) Waiting for engine thread to exit.
(eca-control-base) pthread_join returned: 0
(eca-control-base) Engine thread has exited succesfully.
(eca-engine) ECA_ENGINE destructor
- [ Engine exiting(B ] -----------------------------------------------------
(eca-control-objects) Disconnecting chainsetup:  "untitled-chainsetup".
(eca-chainsetup) Closing chainsetup "untitled-chainsetup"
(eca-chainsetup) Closing audio device/file "05_Slow_Hands.mp3".
(eca-chainsetup) Closing audio device/file "new.05_Slow_Hands.mp3".
(audioio-mp3) Cleaning child process pid=28135.
(audioio-forked-stream) Sending SIGKILL to child process related to: new.05_Slow_Hands.mp3
(audioio-forked-stream) Problems in terminating child process:No child processes
(audioio-forked-stream) Sending SIGTERM to child process: new.05_Slow_Hands.mp3
(eca-session) Chainsetup disconnected
(eca-control) ECA_CONTROL destructor
(eca-session) ECA_SESSION destructor-in
(eca-chainsetup) ECA_CHAINSETUP destructor-in
(eca-chainsetup) Deleting chain "default".
(eca-chain) CHAIN destructor!
(eca-chainsetup) Deleting audio object "05_Slow_Hands.mp3".
(eca-chainsetup) Deleting audio object "new.05_Slow_Hands.mp3".
(audioio-db-server) destructor
(audioio-db-server) destructor-out
(eca-chainsetup) ECA_CHAINSETUP destructor-out
(eca-session) ECA_SESSION destructor-out

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loop device with eci/iam

Friends,

I'm converting some command line ecasound to python scripts and I'm
having trouble with two things.  Here are the two problems, and a
snippet of python code I'm trying to use for it:

1)Mixing several chains to one chain as in the example from the docs,
particularly the all line, but more generally how to mix two or more
chains to a third chain:

ecasound -c \
-a:1 -i drums.wav \
-a:2 -i synth-background.wav \
-a:3 -i bass-guitar_take-2.ewf \
-a:4 -i brass-house-lead.wav \
-a:all -o alsa

2)The loop device functionality, not looping like repeating a sample
but copying the output of one chain or the mix from multiple chains to
one or more chains, as in this example from the docs(I've shortened it
a little to focus it):

-a:1 -i drums.wav \
-a:2 -i synth-background.wav \
-a:1,2 -o loop,1 \
-a:5,6 -i loop,1 \
-a:5 -o alsa \
-a:6 -o current-mix.wav

Here is a snippet of the script I've been playing with to try to get
this working with my input with comments for where I've been trying to
get this working:

from pyeca import *
e = ECA_CONTROL_INTERFACE()
e.command("cs-add play_chainsetup")
e.command("c-add 1st_chain")
e.command("ai-add lead1.wav")
e.command("c-add 2nd_chain")
e.command("ai-add shots1.wav")

#I've tried to add 'loop,1' to the third chain in ai-add; of
e.command("c-add 3rd_chain")
???? output from mix of chains 1 and 2 to two outputs, a file and alsa
e.command("ao-add ")
e.command("cs-connect")
e.command("run")
#I've gotten all kinds of -a chains from my attempts with this
cs-save, but none with more than one chain name/number after the -a
e.command("cs-save")

So how do I get the output from 1st_chain, and 2nd_chain to 3rd_chain,
and more generally just mixing any combination of chains to another or
multiple chains?

thanks,

Will

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Interactive mode, cut & paste

Hello

Is it possible to use ecasound's interactive mode to cut/copy and paste,
like this? Listen to an audio file, stop at a certain position and then
cut from that position, and then save the result?

Regards,
Lars

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mono to stereo filter

Hi,

Does anyone have a suggestion for how I can split a mono track into a
stereo track with each side (left/right) as a complete opposite of the
other?

So for example if the left track has audio at 200Hz the right track will
not have audio at 200Hz, and so on up the frequency range alternating for
each track.

Something like a parametric eq with opposite values for each output track.

--
Patrick Shirkey
Boost Hardware Ltd

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Ecatools/ecasound problem

Hello everyone!
   I just came across an error, processing a filename, which had a comma. It 
said: unable to handle filenames with coma. this must have been ecanormalize 
or ecafixdc from a script.
   I renamed the original file and processed again, but it might be nice to not 
have this issue for a start. If it's not too difficult, could this be fixed? I 
know, that coma is a seperator for parameters in all operations, but usually 
it should be shell-escaped or quoted.
   Warm regards
          Julien

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http://juliencoder.de/nama/music.html

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Compile on osx 10.7.5

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