[wdmaudiodev] Re: KMDF for a USB audio driver?
- From: Tim Roberts <timr@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 03 Mar 2006 09:07:18 -0800
Nick Dowell wrote:
> Yes, ideally that would be the case.
>
> What I forgot to mention is that our products are geared towards
> music production and recording, meaning the driver needs to offer:
>
> 1) sub 10 ms passthrough (in+out) latency for direct software
> monitoring in applications such as Cubase, Sonar...
Why? I mean, was this "10 ms" number a bullet point on a PowerPoint
slide concocted by some marketing guy after a bottle of cheap bourbon,
or do you actually have some empirical usability studies that show
complaints if latency is higher than that?
I guess what I'm saying is that I don't believe you. Most telephones
have vastly more than 10 ms latency. Most cell phones have many
hundreds of milliseconds of latency, and people are fine with them. 50
ms latency in a movie or TV show is undetectable.
If you really need sub 10 ms latency, then you need a piece of hardware,
not a general purpose computer running a consumer operating system.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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