Re: Size Matters
Originally posted by lazyrighteye
Anyone know file size compression comparisons between mp3 (say 128) and AAC?
directly from Apple's AAC website:
Move Over MP3
Internet audio has become wildly popular in recent years, specifically in the MP3 format. But what most listeners dont realize is that MP3s compression technology is more than a decade old. In those ten years, many advances in perceptual audio coding and compression have been achieved. AAC takes full advantage of these advances, resulting in higher quality output at lower data rates, allowing even modem users to hear a difference.
When compared side-by-side, AAC proves itself worthy of replacing MP3 as the new Internet audio standard. Take a look at these AAC advantages over MP3:
Improved compression provides higher-quality results with smaller file sizes
Support for multichannel audio, providing up to 48 full frequency channels
Higher resolution audio, yielding sampling rates up to 96 kHz
Improved decoding efficiency, requiring less processing power for decode
The Data Speaks for Itself
In numerous comparison tests, AAC comes out on top. Check out these impressive results:
AAC compressed audio at 128 kbps (stereo) has been judged by expert listeners to be indistinguishable from the original uncompressed audio source.*
AAC compressed audio at 96 kbps generally exceeded the quality of MP3 compressed audio at 128 kbps. AAC at 128 kbps provides significantly superior performance than does MP3 at 128 kbps.*
AAC was the only Internet audio codec evaluated in the range Excellent at 64 kbps for all of the audio items tested in EBU listening tests.*