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Mark Jenkins
2004-10-22, 15:19
Thanks for the responses Michel, Mike and Adrian - what a great forum.  They caused me to try a few things, and I have narrowed down the problem.



It seems to me the problem is not the switching to PCM one, and that the stable speed is wrong.  The DAC has a switch to select the lock type.  I can be running in PCM for a while and switch from the wide setting to a narrower lock setting and the DAC fails to lock.



All of my music is WAV compressed using FLAC.  So I encoded an MP3.  When playing it back the DAC had no trouble locking onto it at its narrowest setting.



So I unpacked a FLAC file to WAV and played that.  Again the DAC had no trouble locking onto it at its narrowest setting.  Now we are getting somewhere..  I should have tried that before.



Therefore I have at least one potential fix which is to ditch using FLAC and invest in more storage, which I am prepared to do.  However a more elegant solution would be nice. 



The problem might well be that my feeble attempts to use FLAC correctly resulted in something odd.  I wonder if someone could tell me what version of FLAC they are using and the settings they use when encoding WAV to FLAC and I will try that on a file. 



The version of FLAC I use is 1.7.1 Etree edition.



I have so far only used the FLAC front end manually rather than use a script.  To keep it simple I have minimal settings - Level 8 encoding, delete input files, and output to the same as 'input directory.'



Perhaps my PC's specs are too low for the conversion to happen to time?  It is a P3 750MHz Samsung NV5000 tiny notebook with just 192MB RAM (only 8MB for video) and the storage is attached using USB 1.  I have better PCs in the house, but this one is nearly silent and so it can sit close to the Squeezebox.

Many thanks for the help so far.



Mark






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Mark Bennett
2004-10-22, 23:42
This finding conflicts with the findings I had when I cam across the
same problem with an Audio Synthesis DAX. In that case anything which
was encoded to MP3 worked, but anything on PCM didn't (including FLAC).

Admittedly this was some time ago, but I know some other friends have
repeated the experiment in the last month, and have come up with the
same results.

I can't see that the SB can tell the difference between native WAV and
FLAC converted to WAV on the server end, so make sure you check you're
transcoding settings - are yu sure your wav isn't being transcoded to
MP3?

If this is a genuine observation, then it might help to isolate the
root cause of the problem, which would be very interesting.

Mark Jenkins wrote:
> Thanks for the responses Michel, Mike and Adrian - what a great forum.
> They caused me to try a few things, and I have narrowed down the problem.
>
> It seems to me the problem is not the switching to PCM one, and that the
> stable speed is wrong. The DAC has a switch to select the lock type. I
> can be running in PCM for a while and switch from the wide setting to a
> narrower lock setting and the DAC fails to lock.
>
> All of my music is WAV compressed using FLAC. So I encoded an MP3.
> When playing it back the DAC had no trouble locking onto it at its
> narrowest setting.
>
> So I unpacked a FLAC file to WAV and played that. Again the DAC had no
> trouble locking onto it at its narrowest setting. Now we are getting
> somewhere.. I should have tried that before.
>
> Therefore I have at least one potential fix which is to ditch using FLAC
> and invest in more storage, which I am prepared to do. However a more
> elegant solution would be nice.
>
> The problem might well be that my feeble attempts to use FLAC correctly
> resulted in something odd. I wonder if someone could tell me what
> version of FLAC they are using and the settings they use when encoding
> WAV to FLAC and I will try that on a file.
>
> The version of FLAC I use is 1.7.1 Etree edition.
>
> I have so far only used the FLAC front end manually rather than use a
> script. To keep it simple I have minimal settings - Level 8 encoding,
> delete input files, and output to the same as 'input directory.'
>
> Perhaps my PC's specs are too low for the conversion to happen to time?
> It is a P3 750MHz Samsung NV5000 tiny notebook with just 192MB RAM (only
> 8MB for video) and the storage is attached using USB 1. I have better
> PCs in the house, but this one is nearly silent and so it can sit close
> to the Squeezebox.
>
> Many thanks for the help so far.
>
> Mark
>
>
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