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Topic: The no gapless sample (Read 7098 times) previous topic - next topic
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The no gapless sample

Here is the first original file.

The no gapless sample

Reply #1 –
...and the second.

These two files play gaplessly, but as soon as you encode them to MP3 or MPC, an audible click between them appear, even with Foobar2000 gapless playback.

The no gapless sample

Reply #2 –
2 secs at 0dB

UJ

The no gapless sample

Reply #3 –
3 secs at 0dB

UJ
 

The no gapless sample

Reply #4 –
2 secs silence, 2 secs at 0dB, 2 secs silence, 3 secs at 0dB, 1 sec silence

UJ

The no gapless sample

Reply #5 –
Stripped and butted mp3 files

UJ

The no gapless sample

Reply #6 –
Sonogram below of the offending area. File encoded to mp3 with LAME version 3.90.3 MMX using --alt-preset 128.

Decoded file sizes in Foobar2000 are the same as the original.
daefeatures.co.uk

The no gapless sample

Reply #7 –
So, what's the problem, encode into ogg and you'll have your sample gapless.

The no gapless sample

Reply #8 –
Yup, can't hear a problem with Ogg.

Edit: I wouldn't know how to check this, but is there something non-standard about the file size of the input wav?
daefeatures.co.uk

The no gapless sample

Reply #9 –
Quote
These two files play gaplessly, but as soon as you encode them to MP3 or MPC, an audible click between them appear, even with Foobar2000 gapless playback.

IIRC, zZzZzZz has his own experimental DSP, to smooth the transition in such cases, you can ask him for it.
criZZb

The no gapless sample

Reply #10 –
Quote
Quote
These two files play gaplessly, but as soon as you encode them to MP3 or MPC, an audible click between them appear, even with Foobar2000 gapless playback.

IIRC, zZzZzZz has his own experimental DSP, to smooth the transition in such cases, you can ask him for it.

... which has been verified not to help on this sample.
Microsoft Windows: We can't script here, this is bat country.

The no gapless sample

Reply #11 –
Waveform artefact produced by imperfect silence detection, compare with the perfect cut and shut in the file 'glitch.jpg' above.

UJ