| ||||||||||||||||||||||
| ![]() | ![]() | |||||||
| SPL Meters | Mic's | Calibration | Sound Cards Delay when processing FIR filters?Discuss Delay when processing FIR filters? in the Equalization | Calibration forum; Delay when processing FIR filters? Hi Guys (and girls?)
The last couple of weeks I have been messing around with different kind of software for ... |
|
|
Views: 253 - Replies: 2
| Thread Tools |
| | #1 | ||||
| Delay when processing FIR filters? Hi Guys (and girls?) The last couple of weeks I have been messing around with different kind of software for digital room correction/EQ. After quite a few measurings etc. I've got a descent FIR filter I would like to use. So far I have been using it with foobar and convolver, and it works just perfect ![]() My problem is, that I would like to use the FIR-filter with a VST-host, by doing so I should be able to run all sounds through the FIR filter. Unfortunately I'm experiencing quite a high delay when using convolver with a VST-host So far my configuration is as following: EMU 0404 soundcard -> all sound is being sent to ASIO in Console (VST-host) -> picks up the ASIO-in signal Convolver - processes the FIR filter (131072 taps stereo filter in 44100 hz) Console -> forward the sound to the ouput From this link I found the following information concerning the delay associated with the use of FIR-filters: (links removed due to restrictions) given a FIR filter which has N taps, the delay is: (N - 1) / (2 * Fs), where Fs is the sampling frequency If this information is correct, the 1.5 s delay is just a result of my pretty huge FIR filter. I just wonder, cause in foobar with convolver I haven't noticed this delay at all, and I felt pretty sure that it should be possible to process a FIR filter in (near)real-time.. But I might be wrong? Anyone who can confirm if a fir filter can be processed in real-time or not? And perhaps know a solution ![]() Thanks a lot! (I hope I have placed the topic in the right category) Last edited by Theeagle; 09-06-09 at 08:23 AM.. | ||||
|
| | |
| | |
| | #2 | |||||
| Re: Delay when processing FIR filters? Quote:
![]() brucek | |||||
|
|
| « » |
| « |
| Bookmarks |
| Tags |
| delay, filters?, processing |
| Thread Tools | |
| |