Audio latency problem in Windows 7

[Laler]

hi,
i have Intel P4 3.0ghz w/ ht
Asus P4P800SE mobo
Cooler Master CPU Cooler
Kingston 512MBx2 (PC3200)
ATi Radeon 9800 Pro 128mb
Creative Sound Blaster Audigy 2,install windows 7.There are great latency while playback of video files.Disabling the DVD drive in device manager doesn't fix it. Not sure about physically removing - should technically be the same I think?i had observe that the latency in audio only with windows 7, latency will not occur with windows vista,windows xp.Any help will be extremely appreciated.

[MrChris-]

Different sound cards will have different latencies at different sampling rates - the higher the sampling rate, the lower the latency. In that sense, the latency occurs in numbers of samples, dependent on the number of samples that need to be put into a buffer before monitoring begins. Because the latency in samples is fixed or defined by the card, then the faster the sampling rate, the quicker a fixed number of samples will pass through the buffer. Hence, faster sampling rates = lower latencies. Often, a buffer size can be set in the sound card's control panel, and a lower buffer size = fewer samples that need to be buffered. As long as your system can handle the lower buffer size, lowest is best.

[jesse]

hi,
It`s not the cd/dvddrive (TSST DVD±RW drives) because in my previous system it wasnt a TSST DVD±RW drives but something from unknow (HS/HT or something like that). So youre conclusion about the drive doesnt fix the latency.

[Solomon]

You know the buffer size too small errors PT gives you when you've got too much running at once? That basically happens whenever the red spikes would appear on the latency checker (every few seconds), even if there's absolutely nothing happening and CPU usage is pretty much on zero, unless the buffer is something like 1024+.

Recording sounds fine, and playback sounds fine, but you'd have to do it at buffers which are totally impractical for recording.

[SalVatore]

latency is the delay between an audio event being requested and when it is performed; such as the gap between pressing the keyboard and your synth actually making the sound.

In computer terms, requests made to the processor are in the form of interrupts - an interrupt tells the processor to stop what it’s doing and focus on a new task instead. Interrupting does take up a certain amount of CPU overhead, so the system uses buffers to reduce the number of interrupts.