KVR Audio

mystran · Post by **mystran** » Fri Apr 18, 2008 9:13 pm

Oh, since this was designed to run at around 44.1/48kHz, and should do enough oversampling internally to keep the things "clean" (in the sense of aliasing anyway), if there's enough demand, I could quite easily make it so that if the host sampling rate is something like over 80kHz or so, it'll internally run at half-host sampling rate, and resamples back to host-rate at output, essentially saving half the processing time.

All the code should essentially work fine at any sampling rate, as long as it isn't "very low" (44.1kHz is lowest I'm willing to officially support). Raising the sampling rate will naturally provide some improvement in quality, but I personally do not believe that it is worth the double CPU time to run it at 96kHz (or 88.2kHz or whatever), for those that feel they need to run their host (or other plugins) at higher rate, this might be easy CPU saver.

Please tell if you think such a feature (or could make it option as well) would be useful.

bwwd · Post by **bwwd** » Fri Apr 18, 2008 9:17 pm

I know that supersaw is considered as registered trademark oscillator

I think you have it , ive got some beautiful strings from your instrument ! And if it can make those strings it can make some very good supersaw patches.
Maybe you could make GUI smaller ?
Ive got Intel Celeron 1700 Mhz
48% cpu with 3 note chord on stringy patch.

mystran · Post by **mystran** » Fri Apr 18, 2008 9:51 pm

Maybe you could make GUI smaller ?

Well.. not easily, unfortunately. It's always been my goal to keep it as small as possible, but at the same time, I really would like to keep everything on screen at the same time, to make editing as simple as fast as possible.

All the graphics are essentially scalable (they are vector graphics currently), but the limiting factor is the fonts which will become unreadable if I make 'em any smaller (I actually tried, and on high-res display they probably already are awfully small), and without making the fonts any smaller, there just isn't a way to fit stuff this way. So it's really a compromise. I'd like it smaller too, but other than making it paged (and therefore much slower to use assuming it fits on screen at all this way, ofcourse).

Current GUI measures 720x496 pixels + any frames the host adds, so I do understand it's rather huge if you're stuck with something like 800x600 (or even less). I guess I could steal a pixel here, another there, remove margins, and such, but I believe that kind of stuff would really just sacrifice the clarity without any real benefit for someone that needs it smaller.

So short of doing a completely separate "small-screen" GUI... unfortunately not going to do another complete GUI rework right now...

On the other hand... if you only want it small temporarily so you can have other stuff show at the same time, you can collapse it to just the header row, by right-clicking background (say the logo) and un-checking "Full view".

Ive got Intel Celeron 1700 Mhz
48% cpu with 3 note chord on stringy patch.

What samplerate?

I currently haven't done much performance testing on Intel processors, 'cos I don't currently have easy access to any, but that'll change soon I think. I'll then be able to see if there's something that works particularly badly and can be improved.

But unfortunately I have to admit your CPU is somewhat below what I had in mind when tuning quality/CPU tradeoffs.

mystran · Post by **mystran** » Fri Apr 18, 2008 10:09 pm

Anyway, since nobody's complaining crashes, it must be completely and absolutely bug-free now, and I can go sleep.

bwwd · Post by **bwwd** » Sat Apr 19, 2008 4:50 am

I made some short mp3 with Your synth:
http://bwwd2.diinoweb.com/files/Valo.mp3
Nothing spectacular but i learned that i can make good plucks with use of LFOs.
I missing sine wave in LFO section.
I like Your reverb , i like chorus its nice i like LFO routings but maybe filter resonance routing not only cutoff ? Also delay , maybe filter to cutoff low freq ?

VitaminD · Post by **VitaminD** » Sat Apr 19, 2008 6:50 am

mystran wrote:Anyway, since nobody's complaining crashes, it must be completely and absolutely bug-free now, and I can go sleep.

yes no crashes here (so far)

sound quality is still awesome as ever.. Delay is nice.. I would prefer it if the times were displayed in terms of dotted or triplet (1/8d or 1/8t) since I'm too stupid/lazy to remember which is which with the simple fractions given..

other than that seems really good..

VitaminD · Post by **VitaminD** » Sat Apr 19, 2008 6:55 am

bwwd wrote:I made some short mp3 with Your synth:
http://bwwd2.diinoweb.com/files/Valo.mp3
Nothing spectacular but i learned that i can make good plucks with use of LFOs.
I missing sine wave in LFO section.
I like Your reverb , i like chorus its nice i like LFO routings but maybe filter resonance routing not only cutoff ? Also delay , maybe filter to cutoff low freq ?

nice, trancey demo..

I really like the pad at the ending

I agree we still need more LFO routings but I suspect thats already in the works..

VitaminD · Post by **VitaminD** » Sat Apr 19, 2008 7:00 am

ok one bug.. seems a bit weird.. when using an LFO to control Filter Cutoff, it appears to apply per note instead of to the final output sound.. as a result when playing pad/string progressions, the cutoff is at different places based on when a note in the progression started.. instead I think it should control the sound of the final outputs..

mystran · Post by **mystran** » Sat Apr 19, 2008 5:01 pm

VitaminD wrote:ok one bug.. seems a bit weird.. when using an LFO to control Filter Cutoff, it appears to apply per note instead of to the final output sound.. as a result when playing pad/string progressions, the cutoff is at different places based on when a note in the progression started.. instead I think it should control the sound of the final outputs..

All LFOs are per-voice by design, so not really a bug. What you want is a global mode for the LFOs. The truth is, I was going to add a global mode in this version, but I kinda forgot it, so it's coming soon..

zerocrossing · Post by **zerocrossing** » Sat Apr 19, 2008 5:39 pm

Wow, that sounds great to me. This is surely one to watch. After beta what do you think the price will be?

bwwd wrote:I made some short mp3 with Your synth:
http://bwwd2.diinoweb.com/files/Valo.mp3
Nothing spectacular but i learned that i can make good plucks with use of LFOs.
I missing sine wave in LFO section.
I like Your reverb , i like chorus its nice i like LFO routings but maybe filter resonance routing not only cutoff ? Also delay , maybe filter to cutoff low freq ?

mystran · Post by **mystran** » Sat Apr 19, 2008 8:26 pm

zerocrossing wrote:Wow, that sounds great to me. This is surely one to watch. After beta what do you think the price will be?

The pricing will be at 40 euro once betas are stable and full version ready for prime-time (version 0.9 then or something like that); then I'm going to keep it that way for some time until there's a quality preset-set and everything is known to be very stable, and MIDI learn is there, and all the other finishing touch and maybe a couple of extras that aren't there yet. After it finally gets to 1.0, we'll probably be at 50 euro or so (but I will reconsider the price once it's time for that so no promises).

Oh, and obviously beta-licenses are going to be good for 1.0 as well.

mystran · Post by **mystran** » Sat Apr 19, 2008 8:33 pm

VitaminD wrote:
sound quality is still awesome as ever.. Delay is nice.. I would prefer it if the times were displayed in terms of dotted or triplet (1/8d or 1/8t) since I'm too stupid/lazy to remember which is which with the simple fractions given..

The way the times are displayed is just a question of changing some text. I'll go over those at some point and see if I can make 'em less confusing.

But 1/8d (dotted eighth?) = 3/16, and 1/8t = 1/12 if I'm not mistaken?

Anyway, divisions like 5/16 can't be show that way easily, yet I find them useful myself (which is why they are there), but point taken, I'll try to make that more clear at some point.

mystran · Post by **mystran** » Sat Apr 19, 2008 9:06 pm

bwwd wrote: I missing sine wave in LFO section.

Added to TODO list.

I like Your reverb , i like chorus its nice i like LFO routings but maybe filter resonance routing not only cutoff ?

Glad you like the reverb, since it took quite some effort to find a decent sounding, yet not too expensive algorithm for that.

As for resonance modulation would be possible to add at some point... adding to TODO list, but I wanna make it so it won't slow down the filter when it's not used, and I'll see if I can collect a couple of more targets to add at the same time, so as to save some work.

Also delay , maybe filter to cutoff low freq ?

I believe a tunable filter for the delay cutoff is slightly out of scope for this built-in delay unfortunately, but I admit there's a need for some low-frequency filtering in the feedback loop though, to keep it from making a mess when using the delay with low notes (currently it'd circulate even DC if it got some). So I'm experimenting with adding some in the near future.

I'm also thinking of slight low-pass, and maybe some very-slight quality degradation to make the dry sound stand out a little better. Nothing drastic though.

mystran · Post by **mystran** » Sat Apr 19, 2008 9:11 pm

VitaminD wrote: I agree we still need more LFO routings but I suspect thats already in the works..

More routings in the sense of more routing slots (unfortunate unlikely to happen very soon, would need a mod-matrix for that) or in the sense of more routing targets in which case please please please suggest some, other than resonance (which was mentioned), I'm not sure what's missing, but would gladly see if things added whenever that's possible.

mystran · Post by **mystran** » Sat Apr 19, 2008 9:13 pm

VitaminD wrote:the cutoff is at different places based on when a note in the progression started..

I already commented this, but .. if you put the LFO in "song" mode (in which case it is tempo-synced too) it'll track song-position which will be same for each note... so that way you can get the same modulation for each note even now, if you can live with the song-sync.

[edit]won't work if you want same sample&hold for all voices obviously, anyway, real global-mode will be coming sooner or later anyway[/edit]

Valo - public beta demo, second attempt