Have you tried converting the flac file to wav and trying that?  That will distinguish between the flac format and the audio

⁣Sent from TypeApp ​

On Jun 13, 2021, 21:24, at 21:24, tjingboem  wrote:
>i don't think that is it. The lpanal manual page says:
>*-d duration* -- duration (in seconds) of the audio segment to be
>analyzed.
>The default of 0.0 means to the end of the file.
>
>perhaps it does not like flac?
>
>and when i run the csd i see that the fox gets its poles while
>finneganswake1.flac does not:
>
>util lpanal:
>Reading sound from fox.wav, writing lpfile to
>/media/menno/datae/onderzoek/manualExamples/fox.lpc
>poles=40 hopsize=200 begin= 0.0 duration= 0.0
>lpheader comment:
>
>pch track range: 50.0 - 5000.0 Hz
>Using pole storage method
>audio sr = 44100, monaural
>opening WAV infile /media/menno/datae/csounddata/Samples/fox.wav
>analysing 121569 sample frames (2.8 secs)
>607 lpc frames written to
>/media/menno/datae/onderzoek/manualExamples/fox.lpc
>end of score. overall amps: 0.0
>overall samples out of range: 0
>0 errors in performance
>Elapsed time at end of performance: real: 0.708s, CPU: 0.703s
>0dBFS level = 32768.0
>--Csound version 6.16 (double samples) Jun 6 2021
>[commit: none]
>libsndfile-1.0.28
>util lpanal:
>Reading sound from finneganswake1.flac, writing lpfile to
>/media/menno/datae/onderzoek/manualExamples/finneganswake100.lpc
>poles=40 hopsize=200 begin= 0.0 duration= 0.0
>lpheader comment:
>
>pch track range: 50.0 - 5000.0 Hz
>Using pole storage method
>audio sr = 44100, monaural
>opening FLAC infile finneganswake1.flac
>analysing 558868 sample frames (12.7 secs)
>Found only 0 poles...sorry
>wanted 40 poles
>
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Certainly the audio not the format.  I converte flac t wav and ran 
lpanal

Reading sound from manual6-git/examples/finneganswake1.wav, writing lpfile 
to xxx.lpc
poles=40 hopsize=200 begin= 0.0 duration= 0.0
lpheader comment:

pch track range:  50.0 - 5000.0 Hz
Using pole storage method
audio sr = 44100, monaural
opening WAV infile manual6-git/examples/finneganswake1.wav
analysing 558868 sample frames (12.7 secs)
Found only 0 poles...sorry
wanted 40 poles
end of score.              overall amps:      0.0



n Sun, 13 Jun 2021, tjingboem wrote:

> i don't think that is it. The lpanal manual page says:-d duration -- duration
> (in seconds) of the audio segment to be analyzed. The default of 0.0 means to
> the end of the file.
> 
> perhaps it does not like flac?
> 
> and when i run the csd i see that the fox gets its poles while
> finneganswake1.flac does not:
> 
> util lpanal:
> Reading sound from fox.wav, writing lpfile to
> /media/menno/datae/onderzoek/manualExamples/fox.lpc
> poles=40 hopsize=200 begin= 0.0 duration= 0.0
> lpheader comment:
> 
> pch track range: 50.0 - 5000.0 Hz
> Using pole storage method
> audio sr = 44100, monaural
> opening WAV infile /media/menno/datae/csounddata/Samples/fox.wav
> analysing 121569 sample frames (2.8 secs)
> 607 lpc frames written to /media/menno/datae/onderzoek/manualExamples/fox.lpc
> end of score. overall amps: 0.0
> overall samples out of range: 0
> 0 errors in performance
> Elapsed time at end of performance: real: 0.708s, CPU: 0.703s
> 0dBFS level = 32768.0
> --Csound version 6.16 (double samples) Jun 6 2021
> [commit: none]
> libsndfile-1.0.28
> util lpanal:
> Reading sound from finneganswake1.flac, writing lpfile to
> /media/menno/datae/onderzoek/manualExamples/finneganswake100.lpc
> poles=40 hopsize=200 begin= 0.0 duration= 0.0
> lpheader comment:
> 
> pch track range: 50.0 - 5000.0 Hz
> Using pole storage method
> audio sr = 44100, monaural
> opening FLAC infile finneganswake1.flac
> analysing 558868 sample frames (12.7 secs)
> Found only 0 poles...sorry
> wanted 40 poles
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features can
> be posted here
>

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What I think is happening is that lpanal tries to create the poles from the analysis but fails (possibly because it gets unstable poles). Often
silence does this.
I removed the silence at the start of the file and it is now finding the poles

victor@MacBook-Pro audio % lpanal -a -p40  finneganswake1.wav test.lpc 
time resolution is 1000.000 ns
0dBFS level = 32768.0
--Csound version 6.17 beta (double samples) Jun 13 2021
[commit: 50cdb10a68412c17a68f2f2a03ac6ab2e13f407e]
libsndfile-1.0.28
util lpanal:
Using pole storage method
audio sr = 44100, monaural
opening WAV infile finneganswake1.wav
analysing 543646 sample frames (12.3 secs)
2718 lpc frames written to test.lpc
end of score.		   overall amps:      0.0
	   overall samples out of range:        0
0 errors in performance
Elapsed time at end of performance: real: 4.205s, CPU: 4.172s

========================
Prof. Victor Lazzarini
Maynooth University
Ireland

> On 13 Jun 2021, at 21:40, john  wrote:
> 
> *Warning*
> 
> This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.
> 
> Certainly the audio not the format.  I converte flac t wav and ran
> lpanal
> 
> Reading sound from manual6-git/examples/finneganswake1.wav, writing lpfile
> to xxx.lpc
> poles=40 hopsize=200 begin= 0.0 duration= 0.0
> lpheader comment:
> 
> pch track range:  50.0 - 5000.0 Hz
> Using pole storage method
> audio sr = 44100, monaural
> opening WAV infile manual6-git/examples/finneganswake1.wav
> analysing 558868 sample frames (12.7 secs)
> Found only 0 poles...sorry
> wanted 40 poles
> end of score.              overall amps:      0.0
> 
> 
> 
> n Sun, 13 Jun 2021, tjingboem wrote:
> 
>> i don't think that is it. The lpanal manual page says:-d duration -- duration
>> (in seconds) of the audio segment to be analyzed. The default of 0.0 means to
>> the end of the file.
>> 
>> perhaps it does not like flac?
>> 
>> and when i run the csd i see that the fox gets its poles while
>> finneganswake1.flac does not:
>> 
>> util lpanal:
>> Reading sound from fox.wav, writing lpfile to
>> /media/menno/datae/onderzoek/manualExamples/fox.lpc
>> poles=40 hopsize=200 begin= 0.0 duration= 0.0
>> lpheader comment:
>> 
>> pch track range: 50.0 - 5000.0 Hz
>> Using pole storage method
>> audio sr = 44100, monaural
>> opening WAV infile /media/menno/datae/csounddata/Samples/fox.wav
>> analysing 121569 sample frames (2.8 secs)
>> 607 lpc frames written to /media/menno/datae/onderzoek/manualExamples/fox.lpc
>> end of score. overall amps: 0.0
>> overall samples out of range: 0
>> 0 errors in performance
>> Elapsed time at end of performance: real: 0.708s, CPU: 0.703s
>> 0dBFS level = 32768.0
>> --Csound version 6.16 (double samples) Jun 6 2021
>> [commit: none]
>> libsndfile-1.0.28
>> util lpanal:
>> Reading sound from finneganswake1.flac, writing lpfile to
>> /media/menno/datae/onderzoek/manualExamples/finneganswake100.lpc
>> poles=40 hopsize=200 begin= 0.0 duration= 0.0
>> lpheader comment:
>> 
>> pch track range: 50.0 - 5000.0 Hz
>> Using pole storage method
>> audio sr = 44100, monaural
>> opening FLAC infile finneganswake1.flac
>> analysing 558868 sample frames (12.7 secs)
>> Found only 0 poles...sorry
>> wanted 40 poles
>> Csound mailing list Csound@listserv.heanet.ie
>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flistserv.heanet.ie%2Fcgi-bin%2Fwa%3FA0%3DCSOUND&data=04%7C01%7CVictor.Lazzarini%40mu.ie%7C012fdbb26ee74ee799c208d92eab8bae%7C1454f5ccbb354685bbd98621fd8055c9%7C1%7C1%7C637592136612173221%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=1rPGGL46jgEIZkXk0F1yL1boLjrDp%2Fq356m0AIVgmgM%3D&reserved=0 Send bugs reports to
>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fcsound%2Fcsound%2Fissues&data=04%7C01%7CVictor.Lazzarini%40mu.ie%7C012fdbb26ee74ee799c208d92eab8bae%7C1454f5ccbb354685bbd98621fd8055c9%7C1%7C1%7C637592136612173221%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=0f7f1PioR93ndmaTGBAXV6WLLGPLTBZ%2F1wS2mzaOLlU%3D&reserved=0 Discussions of bugs and features can
>> be posted here
>> 
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I implemented a possible solution for this, which is to add a little bit of white noise at -80dB (0dbfs=1) to the input when
analysing the signal and that seems to do the trick as far as making it complete the analysis:

victor@MacBook-Pro debug % lpanal -a -p 40 finneganswake1.flac f.lpc
time resolution is 1000.000 ns
0dBFS level = 32768.0
--Csound version 6.17 beta (double samples) Jun 18 2021
[commit: 80c06898185a293c59c87848afd7a74193dec329]
libsndfile-1.0.28
util lpanal:
Using pole storage method
audio sr = 44100, monaural
opening FLAC infile finneganswake1.flac
analysing 558868 sample frames (12.7 secs)
2794 lpc frames written to f.lpc

Menno: could you test this to see if it does the trick
========================
Prof. Victor Lazzarini
Maynooth University
Ireland

> On 13 Jun 2021, at 22:26, Victor Lazzarini  wrote:
> 
> What I think is happening is that lpanal tries to create the poles from the analysis but fails (possibly because it gets unstable poles). Often
> silence does this.
> I removed the silence at the start of the file and it is now finding the poles
> 
> victor@MacBook-Pro audio % lpanal -a -p40  finneganswake1.wav test.lpc 
> time resolution is 1000.000 ns
> 0dBFS level = 32768.0
> --Csound version 6.17 beta (double samples) Jun 13 2021
> [commit: 50cdb10a68412c17a68f2f2a03ac6ab2e13f407e]
> libsndfile-1.0.28
> util lpanal:
> Using pole storage method
> audio sr = 44100, monaural
> opening WAV infile finneganswake1.wav
> analysing 543646 sample frames (12.3 secs)
> 2718 lpc frames written to test.lpc
> end of score.		   overall amps:      0.0
> 	   overall samples out of range:        0
> 0 errors in performance
> Elapsed time at end of performance: real: 4.205s, CPU: 4.172s
> 
> ========================
> Prof. Victor Lazzarini
> Maynooth University
> Ireland
> 
>> On 13 Jun 2021, at 21:40, john  wrote:
>> 
>> *Warning*
>> 
>> This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.
>> 
>> Certainly the audio not the format.  I converte flac t wav and ran
>> lpanal
>> 
>> Reading sound from manual6-git/examples/finneganswake1.wav, writing lpfile
>> to xxx.lpc
>> poles=40 hopsize=200 begin= 0.0 duration= 0.0
>> lpheader comment:
>> 
>> pch track range:  50.0 - 5000.0 Hz
>> Using pole storage method
>> audio sr = 44100, monaural
>> opening WAV infile manual6-git/examples/finneganswake1.wav
>> analysing 558868 sample frames (12.7 secs)
>> Found only 0 poles...sorry
>> wanted 40 poles
>> end of score.              overall amps:      0.0
>> 
>> 
>> 
>> n Sun, 13 Jun 2021, tjingboem wrote:
>> 
>>> i don't think that is it. The lpanal manual page says:-d duration -- duration
>>> (in seconds) of the audio segment to be analyzed. The default of 0.0 means to
>>> the end of the file.
>>> 
>>> perhaps it does not like flac?
>>> 
>>> and when i run the csd i see that the fox gets its poles while
>>> finneganswake1.flac does not:
>>> 
>>> util lpanal:
>>> Reading sound from fox.wav, writing lpfile to
>>> /media/menno/datae/onderzoek/manualExamples/fox.lpc
>>> poles=40 hopsize=200 begin= 0.0 duration= 0.0
>>> lpheader comment:
>>> 
>>> pch track range: 50.0 - 5000.0 Hz
>>> Using pole storage method
>>> audio sr = 44100, monaural
>>> opening WAV infile /media/menno/datae/csounddata/Samples/fox.wav
>>> analysing 121569 sample frames (2.8 secs)
>>> 607 lpc frames written to /media/menno/datae/onderzoek/manualExamples/fox.lpc
>>> end of score. overall amps: 0.0
>>> overall samples out of range: 0
>>> 0 errors in performance
>>> Elapsed time at end of performance: real: 0.708s, CPU: 0.703s
>>> 0dBFS level = 32768.0
>>> --Csound version 6.16 (double samples) Jun 6 2021
>>> [commit: none]
>>> libsndfile-1.0.28
>>> util lpanal:
>>> Reading sound from finneganswake1.flac, writing lpfile to
>>> /media/menno/datae/onderzoek/manualExamples/finneganswake100.lpc
>>> poles=40 hopsize=200 begin= 0.0 duration= 0.0
>>> lpheader comment:
>>> 
>>> pch track range: 50.0 - 5000.0 Hz
>>> Using pole storage method
>>> audio sr = 44100, monaural
>>> opening FLAC infile finneganswake1.flac
>>> analysing 558868 sample frames (12.7 secs)
>>> Found only 0 poles...sorry
>>> wanted 40 poles
>>> Csound mailing list Csound@listserv.heanet.ie
>>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flistserv.heanet.ie%2Fcgi-bin%2Fwa%3FA0%3DCSOUND&data=04%7C01%7CVictor.Lazzarini%40mu.ie%7C460c8a1277684f21436e08d92eb1f702%7C1454f5ccbb354685bbd98621fd8055c9%7C1%7C0%7C637592164154876583%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=8l%2BCB9aaI%2Fkk1iKBG7AGobQGaoQdanc%2BcV%2F9FhL%2FVr4%3D&reserved=0 Send bugs reports to
>>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fcsound%2Fcsound%2Fissues&data=04%7C01%7CVictor.Lazzarini%40mu.ie%7C460c8a1277684f21436e08d92eb1f702%7C1454f5ccbb354685bbd98621fd8055c9%7C1%7C0%7C637592164154876583%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=nhNoyOVIYchfTzPtpQhW05vQglydNnxRumUYlnjqMVk%3D&reserved=0 Discussions of bugs and features can
>>> be posted here
>>> 
>> 
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