Set ksmps to 1 and look for a-values > 0.

On 11/15/11, Dennis Raddle  wrote:
> Can someone tell me how to write a csd that trims the silence from the
> beginning of a wav file and writes the new wav file?
>
> Dennis
>
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> csound"
>
>


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In one instrument read the soundfile and watch out for the first
couple of non-zeros. When they come in trigger another instrument
using "fout" and "monitor". This will record the output from the
soundfile, but only after the silence at the start. It's hack and
you'd have to watch for a load of 0s at the end too. I'm sure there
are better ways. I'm just too tired now to think about them!




On 15 November 2011 23:59, Dennis Raddle  wrote:
> I know that much, but how to actually do the trimming? How do produce the
> output file? It would require something like an instrument that doesn't
> start sending output until it reaches a non-zero sample.
>
> On Tue, Nov 15, 2011 at 1:12 PM, Adam Puckett 
> wrote:
>>
>> Set ksmps to 1 and look for a-values > 0.
>>
>> On 11/15/11, Dennis Raddle  wrote:
>> > Can someone tell me how to write a csd that trims the silence from the
>> > beginning of a wav file and writes the new wav file?
>> >
>> > Dennis
>> >
>> > Send bugs reports to the Sourceforge bug tracker
>> >             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> > Discussions of bugs and features can be posted here
>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> > csound"
>> >
>> >
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>>
>
>


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That sounds about write. Although you'd then probably want to have 1
or 2 samples delay to that you leave one zero sample in there to avoid
any chances of clicks. Maybe have an instrument that writes its output
with fout?

But normally I'd do this kind of things with SoX. Or these days with
samplemanager (not free but very cheap for what it is).

P




On 15 November 2011 23:59, Dennis Raddle  wrote:
> I know that much, but how to actually do the trimming? How do produce the
> output file? It would require something like an instrument that doesn't
> start sending output until it reaches a non-zero sample.
>
> On Tue, Nov 15, 2011 at 1:12 PM, Adam Puckett 
> wrote:
>>
>> Set ksmps to 1 and look for a-values > 0.
>>
>> On 11/15/11, Dennis Raddle  wrote:
>> > Can someone tell me how to write a csd that trims the silence from the
>> > beginning of a wav file and writes the new wav file?
>> >
>> > Dennis
>> >
>> > Send bugs reports to the Sourceforge bug tracker
>> >             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> > Discussions of bugs and features can be posted here
>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> > csound"
>> >
>> >
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>>
>
>


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Just looking at SoX manual:

"silence [-l] above-periods [duration threshold[d|%]

[below-periods duration threshold[d|%]]

Removes silence from the beginning, middle, or end of the audio.
'Silence' is determined by a specified threshold."

Much easier than making a Csound instrument I'd say!

P

On 16 November 2011 00:11, peiman khosravi  wrote:
> That sounds about write. Although you'd then probably want to have 1
> or 2 samples delay to that you leave one zero sample in there to avoid
> any chances of clicks. Maybe have an instrument that writes its output
> with fout?
>
> But normally I'd do this kind of things with SoX. Or these days with
> samplemanager (not free but very cheap for what it is).
>
> P
>
>
>
>
> On 15 November 2011 23:59, Dennis Raddle  wrote:
>> I know that much, but how to actually do the trimming? How do produce the
>> output file? It would require something like an instrument that doesn't
>> start sending output until it reaches a non-zero sample.
>>
>> On Tue, Nov 15, 2011 at 1:12 PM, Adam Puckett 
>> wrote:
>>>
>>> Set ksmps to 1 and look for a-values > 0.
>>>
>>> On 11/15/11, Dennis Raddle  wrote:
>>> > Can someone tell me how to write a csd that trims the silence from the
>>> > beginning of a wav file and writes the new wav file?
>>> >
>>> > Dennis
>>> >
>>> > Send bugs reports to the Sourceforge bug tracker
>>> >             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> > Discussions of bugs and features can be posted here
>>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> > csound"
>>> >
>>> >
>>>
>>>
>>> Send bugs reports to the Sourceforge bug tracker
>>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> csound"
>>>
>>
>>
>


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You can script sox to do this stuff, and you can run sox from inside
Csound. This is how I do my post-processing inside Csound.

Hope this helps,
Mike

On Tue, Nov 15, 2011 at 7:09 PM, Rory Walsh  wrote:
> In one instrument read the soundfile and watch out for the first
> couple of non-zeros. When they come in trigger another instrument
> using "fout" and "monitor". This will record the output from the
> soundfile, but only after the silence at the start. It's hack and
> you'd have to watch for a load of 0s at the end too. I'm sure there
> are better ways. I'm just too tired now to think about them!
>
>
>
>
> On 15 November 2011 23:59, Dennis Raddle  wrote:
>> I know that much, but how to actually do the trimming? How do produce the
>> output file? It would require something like an instrument that doesn't
>> start sending output until it reaches a non-zero sample.
>>
>> On Tue, Nov 15, 2011 at 1:12 PM, Adam Puckett 
>> wrote:
>>>
>>> Set ksmps to 1 and look for a-values > 0.
>>>
>>> On 11/15/11, Dennis Raddle  wrote:
>>> > Can someone tell me how to write a csd that trims the silence from the
>>> > beginning of a wav file and writes the new wav file?
>>> >
>>> > Dennis
>>> >
>>> > Send bugs reports to the Sourceforge bug tracker
>>> >             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> > Discussions of bugs and features can be posted here
>>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> > csound"
>>> >
>>> >
>>>
>>>
>>> Send bugs reports to the Sourceforge bug tracker
>>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> csound"
>>>
>>
>>
>
>
> Send bugs reports to the Sourceforge bug tracker
>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>



-- 
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com


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Use the system opcode.

P

On 16 November 2011 05:37, Jeffrey Trevino  wrote:
> Hi Mike,
> I need to do this, too - do you have some basic sample code handy to post?
> I've never seen an example of how to script sox from within Csound.
> thanks for the advice,
> Jeff
>
> On Tue, Nov 15, 2011 at 4:54 PM, Michael Gogins 
> wrote:
>>
>> You can script sox to do this stuff, and you can run sox from inside
>> Csound. This is how I do my post-processing inside Csound.
>>
>> Hope this helps,
>> Mike
>>
>> On Tue, Nov 15, 2011 at 7:09 PM, Rory Walsh  wrote:
>> > In one instrument read the soundfile and watch out for the first
>> > couple of non-zeros. When they come in trigger another instrument
>> > using "fout" and "monitor". This will record the output from the
>> > soundfile, but only after the silence at the start. It's hack and
>> > you'd have to watch for a load of 0s at the end too. I'm sure there
>> > are better ways. I'm just too tired now to think about them!
>> >
>> >
>> >
>> >
>> > On 15 November 2011 23:59, Dennis Raddle 
>> > wrote:
>> >> I know that much, but how to actually do the trimming? How do produce
>> >> the
>> >> output file? It would require something like an instrument that doesn't
>> >> start sending output until it reaches a non-zero sample.
>> >>
>> >> On Tue, Nov 15, 2011 at 1:12 PM, Adam Puckett
>> >> 
>> >> wrote:
>> >>>
>> >>> Set ksmps to 1 and look for a-values > 0.
>> >>>
>> >>> On 11/15/11, Dennis Raddle  wrote:
>> >>> > Can someone tell me how to write a csd that trims the silence from
>> >>> > the
>> >>> > beginning of a wav file and writes the new wav file?
>> >>> >
>> >>> > Dennis
>> >>> >
>> >>> > Send bugs reports to the Sourceforge bug tracker
>> >>> >
>> >>> > https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> >>> > Discussions of bugs and features can be posted here
>> >>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body
>> >>> > "unsubscribe
>> >>> > csound"
>> >>> >
>> >>> >
>> >>>
>> >>>
>> >>> Send bugs reports to the Sourceforge bug tracker
>> >>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> >>> Discussions of bugs and features can be posted here
>> >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>> >>> "unsubscribe
>> >>> csound"
>> >>>
>> >>
>> >>
>> >
>> >
>> > Send bugs reports to the Sourceforge bug tracker
>> >            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> > Discussions of bugs and features can be posted here
>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> > csound"
>> >
>> >
>>
>>
>>
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>>
>
>
>
> --
> 《〠》】〶【〖〠〗〶〛〷〚
> Jeff Treviño
> PhD Candidate in Music Composition
> @ the University of California, San Diego
> 〖〠〗〶〛〷〚《〠》】〶
> Skype: jeffreytrevino
> E-mail: jeffrey.trevino@gmail.com
> 〚《〠》】〶【〖〠〗〶〛〷
> 9310H Redwood Dr.
> La Jolla, CA 92037
> USA
> 〖〠〗〶〛〷〚《〠》】〶【
>
>


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