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Re: How about a nope, nope, nope..

Sorry, I am not being clear enough.

The jitter level he found started to enhance lateralization was .2 uSec, or 200 nanoseconds.

When he increased the amplitude of the jitter to .6 uSec, the subjects were able to discern a left to right timing delta of 1.5 uSec.

So, take a tone...like a 2Khz sine wave..jitter it with 600 nanosecond bipolar timing jitter.. feed that signal into both left and right amplifiers..then delay one of the channels 1.5 uSec..that is what the subjects could hear, that delay.

My thinking on a/d dithering is the addition of a triangular wave dithering signal to the analog one you wish to convert, with an amplitude level equal to twice the lsb. Successive conversions, assuming the conversion rate is fast enough compared to the dithering signal, will force the signal to cross a quantization level. This causes a duty cycle on the digital stream, and software downstream can weigh the average. I recall tektronix getting an additional order of magnitude resolution that way, at the expense of conversion speed.

My thinking is that this jitter modulation is being used the same way in the inner ear/brain mechanism.. (IMHG) (G being "guess").

Cheers, John

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