[pulseaudio-discuss] Audible plop at beginning when using pcat-simple

[mindfsck]

Hi there,

I was using this example to simply play a WAV file without having much clue
of audio:
https://www.freedesktop.org/software/pulseaudio/doxygen/pacat-simple_8c-example.html
I changed the sources to match (IMHO) my settings, i.e. channels=1 and
rate=48000.

I have two wavefiles, the first plays as it should (compared with command
line paplay or aplay) and the second one has an audible PLOP (but only
around 90% of the time) at the very beginning of playback:

(1 - OK)
General
Complete name                            : out_clean.wav
Format                                   : Wave
File size                                : 81.3 KiB
Duration                                 : 866 ms
Overall bit rate mode                    : Constant
Overall bit rate                         : 769 kb/s
Audio
Format                                   : PCM
Format settings                          : Little / Signed
Codec ID                                 : 1
Duration                                 : 866 ms
Bit rate mode                            : Constant
Bit rate                                 : 768 kb/s
Channel(s)                               : 1 channel
Sampling rate                            : 48.0 kHz
Bit depth                                : 16 bits
Stream size                              : 81.2 KiB (100%)

(2 - NOK)
General
Complete name                            : out_short_clean.wav
Format                                   : Wave
File size                                : 22.8 KiB
Duration                                 : 242 ms
Overall bit rate mode                    : Constant
Overall bit rate                         : 772 kb/s
Audio
Format                                   : PCM
Format settings                          : Little / Signed
Codec ID                                 : 1
Duration                                 : 242 ms
Bit rate mode                            : Constant
Bit rate                                 : 768 kb/s
Channel(s)                               : 1 channel
Sampling rate                            : 48.0 kHz
Bit depth                                : 16 bits
Stream size                              : 22.8 KiB (100%)

I tried using different BUFSIZE and my systemload is also not an issue...
Any ideas?

Thanks,
mf
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