JJ JohnstonNote: All of JJ's Powerpoint decks are copyright by JJ Johnston. All rights reserved. Permission granted for your own personal (educational) use. This copyright applies whether stated within the deck or not. |
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Hearing & Psychoacoustics |
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| Fundamentals of Hearing | Download (1.28Mb) |
| Some possible sources of listener fatigue. | Download (128kb) |
| What can go wrong with loudness models | Download (345kb) |
| Care and Feeding of Loudness Models | Download (127kb) |
| A spatial hearing tutorial | Download (842kb) |
| A short essay on spatial hearing for the surround live conference. | Download (181kb) |
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Loudness Tutorial.
PNW Section meeting, April 2006 |
no sound (165k) with sound (8.2m) |
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Session TS-1: Physics of Sound and Hearing (1.3m)
A 2-hour hearing tutorial. |
Download (1.3m) |
| What Can We Hear? | Download (770k) |
Perceptual Coders and Related Hardware |
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| What's inside a portable music player? | Download (672kb) |
| The history of audio codec research at AT&T Bell Labs and AT&T-Labs Research. | Download (114kb) |
| Perceptual Coding - A wide-ranging tutorial on perceptual audio coding (3 hours minimum) | Download (4.9m) |
| The Basic Theory of Filtering | Download (779k) |
Floobydust |
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| JJ's vote for the 10 worst mistakes in audio engineering. Reprised from the 123rd Convention. | Download (131kb) |
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A Low-Complexity, Fast-acquiring Perceptually Tuned Room Correction Algorithm.
PNW Section meeting, January 2008 |
Download (409kb) |
| The Science of Audio in 2005 | Download (704k) |
| Conversion: Issues in Hearing, Sampling, Quantization and delta-sigma converter tutorial. | Download (5.3m) |
| Audio vs Video - the same or different? Highlights the differences between audio and video perception. | Download (575k) |
| Home Theatre vs Cinema Audio Production: the Technical Aspects | Download (373k) |
Bill Whitlock |
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| System Interfacing | Download |
Bob Gudgel |
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| From the PNW DSP and Conversion meeting | Download (195k) |
Aaron Gates & Steve Turnidge |
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From the January PNW Section Meeting
High Quality Terminations |
Download (3.66Mb) |
Legal, IP, Patents and Copyright |
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Kevin Jablonski on IP and Copyright
Feb 2009 PNW Section Meeting. |
Download (219k) |
Ivan Tashev |
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| Loudspeaker Arrays for Focusing and Diffusing Sound | Download (1.78Mb) |
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Last modified 05/14/2009.