However, at 96kHz the noise level on analog capture is very high, about -30dBfs. At 88kHz it drops to about -35dBfs. The audio is clear and undistorted, but sounds as if a pink noise generator is summed in as well. This is not a dropped sample, clicking, stuttering problem. No xruns are reported.
In fact, the problem is audible/measureable by just routing the inputs directly to the outputs with via the on-board mixer/router controled by envy24control -- no host software (e.g., ecasound, jack) needs to be running. As I understand it, ALSA just sets a register in the ADCs to control the sample rate, so it is hard to understand what could be going wrong. This doesn't seem to me to be a driver problem, but a defective unit.
I wrote to M-Audio Tech support and was told that they could not help me unless it was installed in a machine running Windows (despite the prominent display of Tux on the box).
The computer is a homebrew system, with a Via M9000 Mini-ITX motherboard and 512MB of memory. I'm running the Planet CCRMA Red Hat 8.0 distribution with the kernel-2.4.20-1.12.ll.acpi and ALSA-0.9.0-45.
Any help or insights would be greatly appreciated.
Thanks...
Aaron Heller <[EMAIL PROTECTED]> Menlo Park, CA
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