New iTunes, new CoreAudioToolbox.dll, iTunes 10.7.0.21, CoreAudioToolbox.dll 7.9.8.1 Options

[eahm]

iTunes 10.7.0.21, CoreAudioToolbox.dll 7.9.8.1. Waiting for some expert to tell what's new.

Pink Floyd - The Dark Side of The Moon -V63 with 7.9.7.9 = 43.2MB, avg. bitrate 139 Kbps / -V63 with 7.9.8.1 = 42.6MB, avg. bitrate 137 Kbps

Pink Floyd - Wish You Were Here -V63 with 7.9.7.9 = 43.2MB, avg. bitrate 135 Kbps / -V63 with 7.9.8.1 = 41.7MB, avg. bitrate 130 Kbps

This post has been edited by eahm: Sep 12 2012, 21:16

[Mix3dmessagez]

I've went back and re-encoded other albums.

Allot show significantly lower bitrates on average than before.

What this tells me is the tweaks on coreaudio must've directly effected quicktime too, because it hasn't been updated in months but I'm already seeing a difference in bitrates.

Stuff that will be 139 will become 127, 130 will become 114, etc...

Some songs will show an increase in bitrate by like 4, but the drastic difference is in the bitrate drop.

I've used quicktime for a few years and this is the most drastic change in bitrate I've seen.

An album that was 56.3mb before now became 53mb.

Now, these albums I'm comparing are my personal needledrops and as I've mentioned before sound forge has been updated also *I downsample with izotope*, however in my experience downsampling in the past after the update while the peaks do change in the files the bitrates stay virtually the same. So I think this is all coreaudio at work...

I would love to hear an enthusiast chime in.

This post has been edited by Mix3dmessagez: Sep 20 2012, 03:30

[eahm]

Mix3dmessagez, did you by chance read the first post? I've reconverted ~1400 songs, albums don't necessarily get smaller, some get bigger. For sure it's better, Apple likes to improve its components. Let's move on more technical details/issues.

This post has been edited by eahm: Sep 20 2012, 03:57

[Mix3dmessagez]

Mix3dmessagez, did you by chance read the first post? I've reconverted ~1400 songs, albums don't necessarily get smaller, some get bigger. For sure it's better, Apple likes to improve its components. Let's move on more technical details/issues.

Yes I have, I was just reporting from my personal findings quicktime itself has been effected by the coreaudio update, and not just the encoder in itunes.