I don't know how often this website comes-up on these forums. But, readers may want to check-out
Noise Addicts just for grins and giggles.
The site will let you test your ears to see if you can "hear like a teenager" and give back to back comparisons of 128kbs and 320kbs MP3 recordings. Choice of headphones or speakers is critical. I could hear 15kHz with Audio Technica ATH ES55 headphones but not with iGrado headphones.
Have Fun!
I found a nice link to such undertakings (evaluation of perceived audio quality as a function of encoding) on the Audio Engineering Society (AES) website:
http://www.aes.org/e-lib/browse.cfm?elib=15074It's a listening test based on various mp3 encoding rates vs. uncompressed material from which the compressed files were derived.
I've yet to download it, but I probably should as Member price is only $5.
I'm familiar with the methodology that they probably used (at least I think that I am as we use this sort of approach in product sound quality when we do structured juried tests), but I am curious to read it.
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