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LossyWav/FLAC preset portable - quality

Hi,

I would like to know how preset portable compares to mp3?
According to wiki; --quality portable: (-q P or -q -2.5) DAP quality preset for use on a compatible DAP.
It's nominal bitrate is 353k but it doesn't say much about comparable quality to mp3 for example.
Did anyone made some more thorough testing? I can't find more detailed info...

 

Re: LossyWav/FLAC preset portable - quality

Reply #1
imho, any codec is better when mp3. compare lossywav need to wavpack-lossy, musepack, opus (as better "classic" lossy).
but, join to "request". how lossywav -5/-2.5 corresponds to the "standart-lossy" (opus, virbis, aac, mpc) ~320/380kbps.

Re: LossyWav/FLAC preset portable - quality

Reply #2
It was designed to be transparent with some exceptions. That would put it in similar quality to high bitrate setting of other codecs. On  my first test with that setting and lossywav I abxed a random track  - not a very big difference but not hard to abx at all @ 352k and normal volume. I could not do it around 384k.  Since then they adapted a more advance noise shaping so its expected to be much better. Below 400k, You might be better off with another codec using less bitrate. Lossywav --quality economic is the better option if your very concerned about quality,have/want no lossless versions and want to keep the bitrate economical .
wavpack 4.8 -b3x6c

Re: LossyWav/FLAC preset portable - quality

Reply #3
Thanks shadowking,
I think I'll stick with traditional codec for portable. No need to go that high in 350-400k range IMO.

Re: LossyWav/FLAC preset portable - quality

Reply #4
Thanks shadowking,
I think I'll stick with traditional codec for portable. No need to go that high in 350-400k range IMO.

I read in another thread you archived in wavpack 450k. You could use those files on portable that support Android OS , IOS or rockbox. That way you avoid transcoding and maintain identical quality on Pc and devices at half the lossless bitrate. If thats too high , I would transcode to a codec not higher than 256k or just use the wv 450k files.
wavpack 4.8 -b3x6c

Re: LossyWav/FLAC preset portable - quality

Reply #5
Thanks shadowking,
I think I'll stick with traditional codec for portable. No need to go that high in 350-400k range IMO.

I read in another thread you archived in wavpack 450k. You could use those files on portable that support Android OS , IOS or rockbox. That way you avoid transcoding and maintain identical quality on Pc and devices at half the lossless bitrate. If thats too high , I would transcode to a codec not higher than 256k or just use the wv 450k files.

Yes, you're right but I have second thoughts about completely dropping lossless archive because I don't know how wavpack is future proof (and also other less popular formats like musepack or optimfrog). For example what if I won't be able to play my wavpack 450k archive in 10-15 years?

Re: LossyWav/FLAC preset portable - quality

Reply #6
http://wavpack.com/#Features
- WavPack is a completely open audio compression format...
- WavPack employs only well known, public domain techniques...
- Multiplatform support including Windows, Linux, and OS X...

do you have a troubles with playing any format recording before 2004?

Re: LossyWav/FLAC preset portable - quality

Reply #7
@m14u these are good arguments but I think that is better to have lossless backup (because I initially wanted to completely drop lossless and use high quality lossy for listening and transcoding).

Re: LossyWav/FLAC preset portable - quality

Reply #8
"./wavpack -f -b400 BN.wav -o BN.wv

 WAVPACK  Hybrid Lossless Audio Compressor  Linux Version 4.32  2006-04-05
 Copyright (c) 1998 - 2005 Conifer Software.  All Rights Reserved.

created BN.wv in 11.02 secs (lossy, 418 kbps)"

the deadbeef is playing that file.

 
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