low-latency audio I/O for Windows ("Freed, Dan" )


Subject: low-latency audio I/O for Windows
From:    "Freed, Dan"  <DFreed@xxxxxxxx>
Date:    Wed, 3 Oct 2007 13:32:59 -0700
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

Dear Auditory List Members: I'm looking for a low-latency audio interface device for use with Windows computers. The goal is to perform real-time signal processing on the PC for the purpose of developing and testing hearing aid DSP algorithms. Consequently I need to keep the hardware-related signal delay to a minimum. Unfortunately, manufacturers generally don't include latency in their specifications, and tech support and sales people don't seem to have latency information either. So I'm hoping that people on this list can point me at some acceptable devices. My target is a total input-to-PC-to-output delay <= 3 ms at 48 kHz. I'd prefer an external device (USB or FireWire). Other desirable features include a mic input, a headphone output, analog I/O level controls, and support for a wide range of sampling rates (16, 24, and 32 kHz would be nice). But the critical feature is the low latency; I can work around other limitations. Any suggestions will be greatly appreciated. Thank you! Dan Freed Senior Engineer Dept. of Human Communication Sciences & Devices House Ear Institute 2100 W. Third St. Los Angeles, CA 90057 USA Phone: +1-213-353-7084 Fax: +1-213-413-0950 Email: dfreed@xxxxxxxx


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DAn Ellis <dpwe@ee.columbia.edu>
Electrical Engineering Dept., Columbia University