Re: [ecasound] writing multiple files

Yes...

This works:

ecasound -ddd \
    -a:1,2,3,4 -i:sndfile,casino_royale.amb,wavex \
    -a:1 -f:16,1,44100 -o 1.wav \
    -a:2 -erc:2,1 -f:16,1,44100 -o 2.wav \
    -a:3 -erc:3,1 -f:16,1,44100 -o 3.wav \
    -a:4 -erc:4,1 -f:16,1,44100 -o 4.wav

This runs forever:

ecasound -ddd \
    -a:0 -i:sndfile,casino_royale.amb,wavex -f:f32_le,4,44100 -o:loop,1 \
    -a:1,2,3,4 -f:f32_le,4,44100 -i:loop,1 \
    -a:1 -f:16,1,44100 -o 1l.wav \
    -a:2 -erc:2,1 -f:16,1,44100 -o 2l.wav \
    -a:3 -erc:3,1 -f:16,1,44100 -o 3l.wav \
    -a:4 -erc:4,1 -f:16,1,44100 -o 4l.wav

As far as I know, they should produce the same result.

Aaron

--
Aaron Heller <heller@email-addr-hidden>
Menlo Park, CA  US
On 5/12/07 3:03 AM, "e deleflie" <edeleflie@email-addr-hidden> wrote:
> Aaron,
> 
> Still not right .... each of the resultant 4 mono files is still
> larger than the original 4 channel file.  so this is what I've got
> now:
> 
> ecasound \
>   -a:input \
>   -f:16,4,44100 \
>   -i:resample-hq,auto,WXYZ.wav \
>   -el:Ambisonics-square-decoder,0,1,1.44,1.44,500,2  \
>   -f:16,4,44100 \
>   -o:loop,1 \
>   -a:LF,RF,LB,RB -f:16,1,44100 -i:loop,1 \
>   -a:LF -o LFront.wav \
>   -a:RF -o RFront.wav -erc:2,1 \
>   -a:LB -o LBack.wav -erc:3,1 \
>   -a:RB -o RBack.wav -erc:4,1
> 
> ... It kind of smells like a bug. I could see a logic if the resultant
> files were all the same size as the original 4 channel file, but since
> they are all larger ...
> 
> Etienne
> 
> 
> On 5/12/07, Aaron Heller <heller@email-addr-hidden> wrote:
>> That last -erc:4,2 should be -erc:4,1
>> But I doubt that's the problem
>> 
>> I looked up some of my old ecasound scripts and see that I put -f s on loop
>> inputs and outputs
>> 
>> ecasound \
>>   -a:input \
>>   -f:16,4,44100 \
>>   -i:resample-hq,auto,WXYZ.wav \
>>   -el:Ambisonics-square-decoder,0,1,1.44,1.44,500,2  \
>>   -f:f32_le,4,44100 \
>>   -o:loop,1 \
>>   -a:LF,RF,LB,RB -f:f32_le,4,44100 -i:loop,1 \
>>   -a:LF -f:16,1,44100 -o LFront.wav \
>>   -a:RF -f:16,1,44100 -o RFront.wav -erc:2,1 \
>>   -a:LB -f:16,1,44100 -o LBack.wav -erc:3,1 \
>>   -a:RB -f:16,1,44100 -o RBack.wav -erc:4,2
>> 
>> 
>> On 5/11/07 10:47 PM, "e deleflie" <edeleflie@email-addr-hidden> wrote:
>> 
>>> Still not right. The below code results in 4 files that grow ever
>>> bigger (I killed ecasound when each of the mono files were 10 times
>>> bigger than the original 4 channel file).... I really cant see what is
>>> wrong here:
>>> 
>>> ecasound \
>>>   -a:input \
>>>   -f:16,4,44100 \
>>>   -i:resample-hq,auto,WXYZ.wav \
>>>   -el:Ambisonics-square-decoder,0,1,1.44,1.44,500,2  \
>>>   -o:loop,1 \
>>>   -a:LF,RF,LB,RB -i:loop,1 \
>>>   -a:LF -f:16,1,44100 -o LFront.wav \
>>>   -a:RF -f:16,1,44100 -o RFront.wav -erc:2,1 \
>>>   -a:LB -f:16,1,44100 -o LBack.wav -erc:3,1 \
>>>   -a:RB -f:16,1,44100 -o RBack.wav -erc:4,2
>>> 
>>> -----------------
>>> the below code, however, produces the correct results, except I have
>>> my 4 tracks in 1 file (which is no good to me).
>>> 
>>> ecasound \
>>>   -a:input \
>>>   -f:16,4,44100 \
>>>   -i:resample,auto,WXYZ.wav \
>>>   -el:Ambisonics-square-decoder,0,1,1.44,1.44,500,2  \
>>>   -o:out.wav \
>>> 
>>> can anyone see what is wrong? ... I suspect it is the loop back that
>>> is doing something strange.
>>> 
>>> Etienne
>>> 
>>> On 5/12/07, e deleflie <edeleflie@email-addr-hidden> wrote:
>>>> Aaron, actually you are right ... That previous code was accepted by
>>>> ecasound,  but didn't give the right results.
>>>> 
>>>> funny you should answer, because the test file that I am converting is
>>>> actually your Stravinsky recording! .. I am decoding that one so that
>>>> I can compare it to your decodes you sent me ages ago (which I still
>>>> have not listened to but will do and send you feedback!).
>>>> 
>>>> I concur on your choice of ecasound for processing multi-channel content...
>>>> 
>>>> Etienne
>>>> 
>>>> On 5/12/07, Aaron Heller <heller@email-addr-hidden> wrote:
>>>>> Hi Etienne...
>>>>> 
>>>>> Actually, I think there is a remaining error.  Chains 2,3,4, and 5 are
>>>>> four
>>>>> channels each and the -f:16,1,44100 simply says to write the first channel
>>>>> of the chain to the file.  So I think you will get four identical files,
>>>>> each containing LFront.wav.
>>>>> 
>>>>> The fix is to do some channel copying in the output chains.
>>>>> 
>>>>> ...
>>>>>>>   -a:2 -f:16,1,44100 -o LFront.wav   \
>>>>>>>   -a:3 -f:16,1,44100 -o RFront.wav -erc:2,1 \
>>>>>>>   -a:4 -f:16,1,44100 -o LBack.wav  -erc:3,1 \
>>>>>>>   -a:5 -f:16,1,44100 -o RBack.wav  -erc:4,1
>>>>> 
>>>>> -erc:2,1 says replace channel 1 in the chain with channel 2, and so forth.
>>>>> I think -erc has been superceded by -chcopy in newer versions of ecasound.
>>>>> I'll warn you that I'm writing this from memory and have not tried it.
>>>>> 
>>>>> Best regards,
>>>>> 
>>>>> Aaron
>>>>> 
>>>>> --
>>>>> Aaron Heller <heller@email-addr-hidden>
>>>>> Menlo Park, CA  US
>>>>> 
>>>>> 
>>>>> On 5/11/07 3:58 AM, "e deleflie" <edeleflie@email-addr-hidden> wrote:
>>>>> 
>>>>>> jeepers, would you believe my only error was the missing slash at the
>>>>>> end of the line!
>>>>>> 
>>>>>> BTW ... I was at first frustrated learning ecasound's syntax .... but
>>>>>> now , as I get to know it better, I like it more and more ... in
>>>>>> combination with ladspa plugins, its a really powerful tool ...
>>>>>> 
>>>>>> please keep up the work!
>>>>>> 
>>>>>> Etienne
>>>>>> 
>>>>>> 
>>>>>> On 5/11/07, e deleflie <edeleflie@email-addr-hidden> wrote:
>>>>>>> Hi,
>>>>>>> 
>>>>>>> I am trying to send a 4 channel file to a ladspa effect, and then
>>>>>>> write the 4 resultant tracks as independent files .... I'm having
>>>>>>> problems routing the output of the LADSPA effect into 4 separate
>>>>>>> tracks ... this is what I have (which seems to break at the loop
>>>>>>> business):
>>>>>>> 
>>>>>>> ecasound \
>>>>>>>   -a:1 \
>>>>>>>   -f:16,4,44100 \
>>>>>>>   -i:resample,auto,WXYZ.wav \
>>>>>>>   -el:Ambisonics-square-decoder,0,1,1.44,1.44,500,2  \
>>>>>>>   -o:loop,1 \
>>>>>>>   -a:2,3,4,5 -i:loop,1 \
>>>>>>>   -a:2 -f:16,1,44100 -o LFront.wav
>>>>>>>   -a:3 -f:16,1,44100 -o RFront.wav
>>>>>>>   -a:4 -f:16,1,44100 -o LBack.wav
>>>>>>>   -a:5 -f:16,1,44100 -o RBack.wav
>>>>>>> 
>>>>>>> (BTW: that ladspa plugin takes 4 channels in and spits out 4 channels)
>>>>>>> 
>>>>>>> can anyone see what I am doing wrong?
>>>>>>> 
>>>>>>> Etienne
>>>>>>> 
>>>>>> 
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>>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>> 
>> 
>> 
>> 
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