EC Designs

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J'avais déjà lu ce type d'argument par un fabricant de hifi, mais je n'arrive plus à le retrouver.  

Citation :USB noise is mainly caused by the short data bursts (frames) that occur either 1000 times / second (UAC1) or 8000 times / second (UAC2). This interference can be easily measured with a scope. The more signal changes per second (higher sample rates, higher bit depth) the higher the interference power level. So interference power rises with increased bit depth and sample rate. There is a break even point where further increase in sample rate does not translate to any audible improvement.
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We support UAC1 only (low speed, full speed), so the maximum sample rate equals 96 KHz. We did this because we have lowest interference at only 1000 frames / second (UAC2 uses 8000 frames / second) and because the break even point where further increase in sample rate won't result in audible improvement of perceived sound is below 96 KHz.

We use isochronous adaptive in order to minimise CPU load (interference) on both source and DAC, and to obtain most steady USB data stream (and related interference spectrum). The converters are clocked directly from the local masterclock.