Jan 31 2024


7:30 pm - 10:00 pm

AES Pacific Northwest Section Event – What Does “Accurate” Even Mean?

This is a hybrid event.

We hear, all the time, people arguing about “accuracy.” In what sense do audio professionals and enthusiasts use that word, and do all uses mean the same thing to all people?

Certainly for some equipment and some uses, there is a very, very precise definition, but, even then, how should this be measured and evaluated? In other cases, (for example, “does this sound exactly like the original?”), sometimes it’s just not that easy.

Noted audio thinker and philosopher James D. “jj” Johnston examines the word and its implications as gear and designs get more refined.

More details on the AES Pacific Northwest Section website.


James D. “jj” Johnston
jj received the BSEE and MSEE degrees from Carnegie-Mellon University, Pittsburgh, PA in 1975 and 1976 respectively. Worked 26 years for AT&T Bell Labs and its successor AT&T Labs Research. One of the first investigators in the field of perceptual audio coding. One of the inventors and standardizers of MPEG 1/2 audio Layer 3 and MPEG-2 AAC, as well as the AT&T Labs-Research PXFM (perceptual transform coding) and PAC (perceptual audio coding) and the ASPEC algorithm that provided the best audio quality in the MPEG-1 audio tests. Currently working in the area of auditory perception of soundfields, electronic soundfield correction, ways to capture soundfield cues and represent them, and ways to expand the limited sense of realism available in standard audio playback for both captured and synthetic performances. Mr. Johnston is an IEEE Fellow, an AES Fellow, a NJ Inventor of the Year, an AT&T Technical Medalist and Standards Awardee, and a co-recipient of the IEEE Donald Fink Paper Award. In 2006, he received the James L. Flanagan Signal Processing Award from the IEEE Signal Processing Society He presented the 2012 Heyser Lecture at the AES 133rd Convention: Audio, Radio, Acoustics and Signal Processing: the Way Forward.

Separate signup links for in-person and online. Attendees should only use one. Please register only once as our capacity is limited. You’ll get an email reminder starting two days before the meeting.

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