audio analyser

pieroc · Post by **pieroc** » Mon Mar 14, 2005 12:15

Is there anybody out there who can make me aware of any trick to get decent results out of the audio analyser as i find it very difficult to tune it to the audio program. Results are not predictable and are somehow different from what one would expect by tweaking the knobs. Perhaps a decent equalization prior to sending audio to the audio card would be better than using the internal eq. I dream of a parametric eq inside resolume.

continuity-B · Post by **continuity-B** » Mon Mar 14, 2005 15:05

Not quite an answer but here's some audio analysis hints I found if you like...

put the framerate of a clip up to about 40fps for smoother results when scratching the timeline with audio analysis.

Also limiting the number of frames to be used by rendering shorter clips or adjusting in/out points in res seems to minimise visible skipping when scratching by audio too.

As for the EQ, pulling the master gain down until almost minimal signal is being detected with a fast falloff, then ramming gain up on the individual L/M/H channels with a slower falloff seems to result in a slightly longer 'sweep' of the analyser for more visually satisfying results.

I'm a total amateur at audio, but to me the analysis does seem to do things you wouldn't expect sometimes and is a bit clunky to use.

Great idea though I hope it gets developed, B+E

Anonymous · Post by **Anonymous** » Thu Mar 17, 2005 23:13

Hi, I got a similar problem with this audio analysis. It just acts to fast and hectic and I feel before having an epilepsy when I watch it:mad:. In addition to this it always just takes out a little part of the clip and scratches it like it is the last day of the world. I this problem due to my system or ist just the way it is?
Thanks

MtB · Post by **MtB** » Fri Mar 18, 2005 00:54

at the first line I have to mentioned that I've never tried the audio analysing stuff in resolume but, i used some similar things in some postproduction enviroment.

in that systems, the major problem is there is too much data coming from the sound file. when I filtered the bands i had some acceptable result. so if you have a chance to filter the bands try it... like filter all the hi and mid frequency bands and try with low bands or vice versa...

bw

[Edited on 17-3-2005 by MtB]

Anonymous · Post by **Anonymous** » Fri Mar 18, 2005 02:21

How or where can I find out if I have the chance?

pieroc · Post by **pieroc** » Mon Mar 21, 2005 14:46

Having started this topic and after playing a bit i must say that the audio analyser actually works and i can get pretty decent results out of it, especially when playing with the > < and + - or = (i don't remember at the moment) buttons . The only thing i'm complaining about is the lack of predictability in the results . At a first sight this can be due to the nature of the amplitude spectra of an audio program which are not so easy to relate to what you would expect to come out in terms of rythm, as frequencies from different instruments overlap and so on ... I mean as a first approximation it's ok but you can get into trouble if if you expect strict predictability. Perhaps i'm just saying silly things ... who knows.