[ProAudio] Microphones question

David Josephson dlj at josephson.com
Mon Jun 14 13:13:57 PDT 2021

In practice, in the market, the digitally interfaced microphone is 
history for high quality audio capture. There are many USB microphones 
for hobbyist/utility use, but no new professional (AES42 interface) 
microphones have been introduced in at least 10 years. There has been no 
interest in continuing work on the few refinements needed to that 
standard in the past meetings of AESSC SC-04-04. Jitter is one problem, 
of course, another is synchronization. We developed an approach that 
allows mics to sync to system clock but it was not widely adopted; Mode 
1 interface is more common but it requires that all signals pass through 
a sample rate converter.

On 6/14/2021 10:43 AM, Bill Whitlock via ProAudio wrote:
> I don't want to derail this thread, but since you mentioned jitter ... I 
> wonder how many designers have considered how microphonic a crystal 
> oscillator is, which translates into jitter of a reference clock when 

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