[music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread gm
What are good frequencies for band splits? (2-5 bands) What I am doing is divide the range between 100 Hz 5-10 kHz into equal bands on a log scale (log2 or pitch). Are there better strategies? Or better min/max frequencies? How is it usually done?

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread gm
The purpose is multiband compression and distortion. So I only have a few bands, 2 to 5. I use ERB scale in my vocoder, which worked slightly better than Bark scale for me (it seems better defined at the low range) I was wondering if I should use it here too or if it's better on a log2

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread Matt Jackson
Gabriel, I think it depends on what you are trying to do. What’s your context? For example a Vocoder (for voice) might have a different distribution of bands (bark scale) than a multipurpose graphic EQ (even octaves). One strange example I know of is the Serge resonant EQ (not crossovers but

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread robert bristow-johnson
On 3/23/18 12:01 AM, gm wrote: What are good frequencies for band splits? (2-5 bands) What I am doing is divide the range between 100 Hz 5-10 kHz into equal bands on a log scale (log2 or pitch). Are there better strategies? Or better min/max frequencies? How is it usually done?

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread gm
For equally spaced bands you could do it with 2 parameters, one to shift the middle or base frequency and one spread or fan parameter that spreads or narrows the bands. The reason I don't want this, is that I don't want too many parameters and the user doesn't know how to set the bands either,

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread Matt Jackson
Or as I said before, even for N bands, one parameter, “Preset” works wonders to describe the purpose and accommodate different use cases. > On 23. Mar 2018, at 17:44, gm wrote: > > For equally spaced bands you could do it with 2 parameters, one to shift the > middle or

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread David Reaves
I designed a four-band AGC for broadcast about 20 years ago, using single-pole subtractive band split filters. I used RMS detection, and wanting each band’s processing to be doing roughly equal ‘work,’ determined the crossover frequencies on the basis of typical energy distribution. This

Re: [music-dsp] bandsplitting strategies (frequencies) ?

2018-03-23 Thread Matt Jackson
If it’s a distortion or compression and only 2-4 bands, a user set crossover(s) would usually be desirable. The Ableton Multi-band Dynamics, Waves C4, Ohm Force Ohmacide, Izotope plugins, Surreal Machines Transient Machines all come to mind. It probably depends on the complexity you are looking