Monthly Archives: June 2014

AAC vs mp3 – A comparison through null testing

As you may already know, AAC and mp3 are compression algorithms that manage to significantly reduce the size of music files by discarding part of the signal based on psychoacoustics, that is, based on what our ears are really able to

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HD vs AAC test discontinued

After gathering what I consider conclusive evidence through null testing of HD-audio tracks, showing that there is no (relevant) audible difference between 16bit/44.1 kHz (CD standard) and higher bit depth/sample rate formats, I see no point in having an HD-audio

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Why I think HD audio is irrelevant

High Definition (HD) audio.Those words sound great! You hear about HD and you immediately picture the huge improvement those two letters have brought to our TV sets. If you love music, you can’t help thinking about the promising wonders HD has to offer to our ears…

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Learning from experience…

I have made some important changes to the blind test. Now it is easier to take, it has simpler and clearer instructions and it is MUCH shorter. Try it!

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New blind test!

Some people found the sequence of short clips in tests #1 and #2 a bit annoying. Here is a NEW TEST (#3)  with a different approach. Try it!

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First test launched!

On Saturday we launched our first blind tests, CD vs iTunes plus (1) and HD vs iTunes plus (2) to see how well they do. (The latter may require downloading the sample files) They challenge our ability to distinguish between CD/HD quality audio and AAC

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