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Topic: .Ogg Vorbis aotuv (Read 402582 times) previous topic - next topic
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.Ogg Vorbis aotuv

Reply #550
hi aoyumi, what exactly was changed in beta 6.03 (2014) when it's not sound quality part?

.Ogg Vorbis aotuv

Reply #551
hi aoyumi, what exactly was changed in beta 6.03 (2014) when it's not sound quality part?

I could be wrong, but I think it's just a merge with libvorbis 1.3.4.

.Ogg Vorbis aotuv

Reply #552
I could be wrong, but I think it's just a merge with libvorbis 1.3.4.

Exactly:
Quote from: http://www.geocities.jp/aoyoume/aotuv/ link=msg=0 date=
aoTuV Beta6.03 (2014) (2014/5/11)
  # The latest aoTuV beta6.03 was unified with Xiph.Org's libvorbis1.3.4. The part related to sound quality is not changed from previous version.

Re: .Ogg Vorbis aotuv

Reply #553
is there any posibility to see any new update of Aoyumi's version of codec again? or is an abandoned project.
Is there any new update from anyone anyway?
I still use ogg vorbis and i was interested if there is still an action from anyone.

Re: .Ogg Vorbis aotuv

Reply #554
The latest aotuv is based on 1.3.5 ver of libvorbis, so it's up to date I guess.

Re: .Ogg Vorbis aotuv

Reply #555
but isnt an old version too? Is been some time to hear an update

Re: .Ogg Vorbis aotuv

Reply #556
Just look at the official vorbis site. libvorbis 1.3.5 is the newest release.

Most of the optimizing efforts probably goes towards opus now anyway.

Re: .Ogg Vorbis aotuv

Reply #557
I think that Nicos asks about psychoacoustic model development.

aoTuV Beta6 was developed 5 years ago, and there were no changes since then.

Re: .Ogg Vorbis aotuv

Reply #558
aoTuV Beta6.03 (2018) (2018/5/2) was released

# The latest aoTuV beta6.03 was unified with Xiph.Org's libvorbis1.3.6. The part related to sound quality is not changed from previous version.

http://www.geocities.jp/aoyoume/aotuv/binary/aoTuV_b6.03_2018.7z

The obvious question is here if nowadays' Vorbis has yet whatever to offer over AAC and Opus (xcept wider support  on HW players ofcourse tho even this is disputable)

Re: .Ogg Vorbis aotuv

Reply #559
On modes other than LC, AAC can be heavy on decoding side. On some portables and older phones can show various issues. I think vorbis, mpc, mp3 (not sure of optus) offer similar performance no matter what bitrate. This could be an advantage for vorbis - streaming audio at 64 k vs AAC HE resource wise while still offering OK quality.  Otherwise like mpc, theres a reference free encoder for all bitrates .  Opus I never tested. I have an older android phone and AAC 32..64k stream somtimes reduce battery drasticaly or get it running hot.
wavpack hybrid 256k -hx4

Re: .Ogg Vorbis aotuv

Reply #560
On modes other than LC, AAC can be heavy on decoding side. On some portables and older phones can show various issues. I think vorbis, mpc, mp3 (not sure of optus) offer similar performance no matter what bitrate. This could be an advantage for vorbis - streaming audio at 64 k vs AAC HE resource wise while still offering OK quality.  Otherwise like mpc, theres a reference free encoder for all bitrates .  Opus I never tested. I have an older android phone and AAC 32..64k stream somtimes reduce battery drasticaly or get it running hot.

From these results on the rockbox wiki, ACC-HE and AAC-HEv2 seem to require more cpu clocks to decode. On older processors it will drain the battery faster.
https://www.rockbox.org/wiki/CodecPerformanceComparison
https://www.rockbox.org/wiki/CodecPerformanceComparison#AMS_AS3525v2_w_47_24MHz_PCLK_40ARM926EJ_45S_41

 
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