I've had a couple of problems with the number of samples delivered from USB sound cards - the number of samples I get in my recordings is not always equal to the sample rate times the number of seconds I record for. This causes problems when I need to know the exact time of events which are not at the beginning of a file.
This has happened with a Creative Labs Extigy and also with an Edirol UA20. The problem is intermittent and possibly associated with running far too many other processes on my computer at the same time. I suspect that the USB buffer is too small and when the PC can't keep up, it just skips samples rather than reporting an error. This message is partly a warning to anyone else using USB sound cards to make recordings where absolute timing of events is critical and partly a request to see if anyone knows any more about this problem and how to avoid it. I've never experienced it with PCI sound cards. Yours, Douglas Gillespie. ---------------------------------- The International Fund for Animal Welfare (IFAW -- www.ifaw.org) works to improve the welfare of wild and domestic animals throughout the world by reducing commercial exploitation of animals, protecting wildlife habitats, and assisting animals in distress. IFAW seeks to motivate the public to prevent cruelty to animals and to promote animal welfare and conservation policies that advance the well-being of both animals and people. This transmission is intended only for use by the addressee(s) named herein and may contain information that is proprietary, confidential and/or legally privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you.
