Hello List!

I am having trouble looping a sound file.
The file is being put into a table using gen 1.

I am using phasor as the read pointer, and mincer is reading through the table.

My problem is that there is a small gap of silence at the end of the table when it wraps around to the beginning which is very perceptible when I am using drum loops.

Any help would be greatly appreciated!!!

<CsoundSynthesizer>

<CsOptions>

-odac

</CsOptions>

<CsInstruments>

sr = 44100

ksmps = 1

nchnls = 1

0dbfs = 1

instr 1

; Speed of Playback

itimescale = .7

iamp = .8

ilength filelen "amenMono.wav"

gifile ftgen 1, 0, 0, 1, "amenMono.wav", 0, 0, 0

; Table Read Pointer

aphs phasor (1/ilength)*itimescale

atimpt = ilength *aphs

asig mincer atimpt, iamp, 1, 1, 1

out asig

endin

</CsInstruments>

<CsScore>

i1 0 100

</CsScore>

</CsoundSynthesizer>

I just tested your csd and it works fine here. And I can confirm that the table length is deferred: 

opening AIFF infile /Applications/Max6/examples/sounds/blah.aif

  defer length 56715 

So it must be something to do with your file. Which Csound version are you using?

P

If you send me your file I can try it here. 

P

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On 4 May 2013 20:05, peiman khosravi <peimankhosravi@gmail.com> wrote:

I just tested your csd and it works fine here. And I can confirm that the table length is deferred: 

opening AIFF infile /Applications/Max6/examples/sounds/blah.aif

  defer length 56715 

So it must be something to do with your file. Which Csound version are you using?

P

i had a related problem, trying to remember to position of a loop using phasor. it was not because of table size or ftable reading method (i used table3).

it was because of phasor was changing while it was being read by the ftable reader function. in your case, its a-time phase and it looks like you're not "freezing" a specific spot in time with your phasor. but maybe it has something to do with that.

On Sunday, May 5, 2013 at 4:20 AM, peiman khosravi wrote:

OK I see, I can hear a gap. It becomes noticeable when time stretching. 

I tried subtracting a second from the table to make sure it's not a silence at the end of the file:

ilength = ilength-1

And it's still there. It seems that mincer might be doing some internal rounding?

P  

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On 4 May 2013 20:08, peiman khosravi <peimankhosravi@gmail.com> wrote:

If you send me your file I can try it here. 

P

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On 4 May 2013 20:05, peiman khosravi <peimankhosravi@gmail.com> wrote:

I just tested your csd and it works fine here. And I can confirm that the table length is deferred: 

opening AIFF infile /Applications/Max6/examples/sounds/blah.aif

  defer length 56715 

So it must be something to do with your file. Which Csound version are you using?

P

Thanks for the responses!

I'm not sure I understand what you mean by "freezing" a specific spot. How would I go about doing that?

Thanks,

Andrew

On Sat, May 4, 2013 at 9:58 PM, zohar argaman <zoharargaman@gmail.com> wrote:

i had a related problem, trying to remember to position of a loop using phasor. it was not because of table size or ftable reading method (i used table3).

it was because of phasor was changing while it was being read by the ftable reader function. in your case, its a-time phase and it looks like you're not "freezing" a specific spot in time with your phasor. but maybe it has something to do with that.

On Sunday, May 5, 2013 at 4:20 AM, peiman khosravi wrote:

OK I see, I can hear a gap. It becomes noticeable when time stretching. 

I tried subtracting a second from the table to make sure it's not a silence at the end of the file:

ilength = ilength-1

And it's still there. It seems that mincer might be doing some internal rounding?

P  

www.peimankhosravi.co.uk || Subscribe to RSS Feed

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On 4 May 2013 20:08, peiman khosravi <peimankhosravi@gmail.com> wrote:

If you send me your file I can try it here. 

P

www.peimankhosravi.co.uk || Subscribe to RSS Feed

To receive emails about upcoming concerts visit this page & enter your email address in the 'follow' section.

On 4 May 2013 20:05, peiman khosravi <peimankhosravi@gmail.com> wrote:

I just tested your csd and it works fine here. And I can confirm that the table length is deferred: 

opening AIFF infile /Applications/Max6/examples/sounds/blah.aif

  defer length 56715 

So it must be something to do with your file. Which Csound version are you using?

P