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Topic: wavpack default settings (Read 5100 times) previous topic - next topic
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wavpack default settings

I looked in the wiki--

-w "Artist=%a" -w "Title=%t" -w "Album=%g" -w "Year=%y" -w "Track=%n" -w "Genre=%m" -h %s %d

--so would removing the "-h" use the wavpack default setting?

wavpack default settings

Reply #1 –
Yes. 
Replace it with -f for the fast setting.

Add x after -h, -f, or -x by itself to use asymmetric mode that will increase compression without slowing down decoding speed.

wavpack default settings

Reply #2 –
thx

wavpack default settings

Reply #3 –
What about -x6 to improve the compression ratio even more?

wavpack default settings

Reply #5 –
It could be ~30 time slower (tested between -f and -fx6).

wavpack default settings

Reply #6 –
Little encoding test:

[no switch] track.wav
created track.wv in 2.95 secs (lossless, 23.99%)

-h track.wav
created track.wv in 4.48 secs (lossless, 25.76%)

-x track.wav
created track.wv in 51.81 secs (lossless, 24.83%)

-x1 track.wav
created track.wv in 19.64 secs (lossless, 24.04%)

-x2 track.wav
created track.wv in 24.11 secs (lossless, 24.05%)

-x3 track.wav
created track.wv in 31.20 secs (lossless, 24.09%)

-x4 track.wav
created track.wv in 82.89 secs (lossless, 24.83%)

-x5 track.wav
created track.wv in 135.09 secs (lossless, 24.84%)

-x6 track.wav
created track.wv in 176.20 secs (lossless, 24.91%)

-hx track.wav
created track.wv in 158.00 secs (lossless, 25.80%)

-h -x1 track.wav
created track.wv in 14.47 secs (lossless, 25.77%)

-h -x6 track.wav
created track.wv in 684.11 secs (lossless, 25.82%)


-hx seems to be the a good switch, on the other hand no switch is also interesting because -h doubles the decoding time and provides only 1-2% better compression than only the x1-6 switch. -h affects the compression more than the -x switch.


Little Comparison:

-x6 -> 24.91% -> 176.20secs
-h -x6 -> 25.82% -> 684.11secs

0.91% difference in compression  |  507,91 secs difference in encoding time



[no switch] -> 23.99% -> 2.95secs
-h -x6 -> 25.82% -> 684.11secs

1.83% difference in compression  |  681,16 secs difference in encoding time

wavpack default settings

Reply #7 –
In WavPack, the level of -x (from 1 to 6) has been automatically set to the optimal value for each of the three levels of encoding (fast, normal, and high).  Unless you're really anal and have a *lot* of time to spare, using anything other than the default -x isn't usually productive.

wavpack default settings

Reply #8 –
Quote from: Supacon on
In WavPack, the level of -x (from 1 to 6) has been automatically set to the optimal value for each of the three levels of encoding (fast, normal, and high).  Unless you're really anal and have a *lot* of time to spare, using anything other than the default -x isn't usually productive.

lol, very true.  i wouldn't recommend it, but i guess at times, i tend to be slightly hypocritical... 
a windows-free, linux user since 1/31/06.