AES Section Meeting Reports

University of Massachusetts-Lowell - November 3, 2011

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Parsons Audio Expo was a great time and much like New York, there was too much to do and not enough time to see it all. The exhibitor's floor had some great new gear like the Soundcraft Vi2 digital console. (Don't forget to go online and register for a chance to win a free Orpheus by prism sound.

If you want to check out all the exhibitors and see their entire product lineups check out

The speakers were all great including our own Bill Carman who sat on the educator's panel and discussed his role in the department and what an impressive task it is to keep the department running and functioning while planning improvements and facilitating proper dispersion of allocated funds. Dr. Ian Corbett discussed the differences/sonic effects between MP3 and AAC encoding as well as other compression algorithms at various bit rates, as well as how they effect things like artifacting, stereo image, and consistency in harmonic content. He also presented samples using various sum and difference combinations to show the distortion residue from the encoding process. The talk will be available as an article with music samples that accompany it that you can hear at this address: and will be released in the upcoming months.

Dave Moulton interviewed Rupert Neve via skype, then finally via a mic and an iPhone. He discussed how the human brain is affected by frequencies above 20kHz. These frequencies outside of the human hearing range can even be discerned by the brain as components that either contain musical harmonic content or are those induced by the circuitry (specifically crossover distortion induced by ICs.) These frequencies will effect your mood when you listen to music that contains that range of sonic material! For a more information go here:

There was far more that happened than we can report on, but these were a few of the highlights. Special thanks to Rick Scott and all the folks at Parsons for putting this event together!

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AES - Audio Engineering Society