Denonite

iTrader: (1)

Here is a link to a sample of a mixed track, billie jean, ripped direct from cd using lossless wav encoder, and ripped using 112 kbps apple encoder. As before, the mixer is a digital pc type that can instantaneously switch from track to track. I have specific times when the mixed track was switched between the two samples. You have to tell me at what time(s) it was switched...should be easy right? Wav full bit for bit encoded vs. the lowly 112 KBPS lossy format...1/10th the info 5 vs 50 MB, but can you hear it?? Here's the link:

http://www.4shared.com/file/162477138/23cbb84/billie_jean_test_sampler.html

Denonite

iTrader: (1)

by the way, the reason i chose this track was; 1. it is very well known, and 2. MJ's cds are very well engineered and very clean, so if a lower bit rate reduces high frequency information significantly, it should be easy to detect on a clean, crisp track like this. This test or challenge if you will, is for fun and not intended to prove a point. I just find it interesting how we perceive sound, and find that most people's negative feelings towards lossy formats are more due to their poor experience with downloaded music rather than direct ripped tracks. I personally use 256kbps vbr or 320kbps for most compressed music as well as a lot of wav, lossless, and rarely below 160 kbps for anything as storage is relatively cheap these days.

ndinadis

iTrader: (2)

going back to you last one, I think I may have heard a couple small variances was one of the transition points 20 or so seconds after the 33 secind mark where you switch, I found it difficult because in certain parts of the song you could notice some differences (chorus area) but I assumes it was just the song

just listened to the new one, 8sec, 25, 36,48, 1min ish most noticable
are any of those even remotely correct

Denonite

iTrader: (1)

no the the previous track, and I'll message with the new track.

ndinadis

iTrader: (2)

I am glad to see that I got most of them, the ones that I was off by 5 seconds or more was it substantial? I only listened to the track once very late at night, I am sure with better line out I could get closer. They are very close like you said but there are some differences. Do you know if AAC is a variable bit rate format. I find it nearly impossible to tell the difference between the vbr tracks, a standard 128 is a little easier.

Denonite

iTrader: (1)

No bad at all...unfortunately aac does not allow vbr below 128 kbps. I think if most people tried this they would be surprised at how little of a difference there really is.