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2nd Multi-Format 128kbps Public Listening Test

Posted by ryuzaki0 on from the music-to-one's-ears dept.

technology is sexy writes "Roberto Amorim has launched his latest public listening test evaluating the performance of different audio codecs at 128kbps, among them Apple's AAC implementation (used in iTunes), LAME, Ogg Vorbis fork auTuV, WMA, Musepack and even Sony's Atrac3 format, which is soon to be used in their own music store. Read more on Hydrogenaudio and check out the results of prior tests. As opposed to most evaluations of audio codecs, this is a scientific test adhering to ITU-R BS.1116-1 as much as possible while still allowing everybody to participate."

2 of 316 comments (clear)

  1. Re:Objective audio analysis by Anonymous Coward · · Score: 5, Informative
    The purpose of a "perceptual" encoder such as MP3 is to remove the frequencies one cannot perceive. The frequency graph therefore need not be the same as the original and yet the encoded version may not be distiguishable from the original.

    Also, a frequency plot tells us nothing about the phase or frequency distribution at certain times in the signal. I can make a sine sweep that would match exactly the spectrum of a pop song, but obviously would sound nothing like it.

    There are ways of objectively measuring the performance of perceptual encoders, but frequency analysis isn't really one of them.

  2. Re:Okay... by sploo22 · · Score: 5, Informative

    DON'T CLICK THE LINK!

    The sad thing is that somebody went to the trouble of putting together a perfectly reasonable, logical post just to throw in a porn link. *sigh*

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    Karma: Segmentation fault (tried to dereference a null post)