On Monday 14 March 2005 21:44, Christoph Eckert wrote: Nothing ! nothing append, no channel responds ! Is there any midi module options for channels ? I become crazy, old keyboards seems uncompatible with linux midi input while new keyboards can always communicate with the old ones.

On Tue, 2005-03-15 at 00:13 -0100, Gilles Degottex wrote: Should work. The hardware synth on emu10k1/2 cards is actually two synths. Unfortunately I don't have a HOWTO. Not yet. But someone is working on one. Really, I just wanted to get an idea of which driver limitations are keeping people from using it, so the driver can be improved. Lee

On Monday 14 March 2005 09:08 pm, Gilles Degottex wrote: You wouldn't be able to do rotor inertia directly with the wave table, One would need a little bit of intelligence riding whatever modulator one used. You could bind the LFO frequency to the mod wheel or other controller and push it by hand (foot). Have a look at horgand, it's a pretty kick ass hammond emulator. It has a leslie, reverb, rhythm section, the whole schmear. http://horgand.berlios.de/

On Tue, Mar 15, 2005 at 01:36:10AM -0500, John Check wrote: Actually, the Leslie rotary speaker effect is a bit more involved than that, and is difficult to get right. I used to repair electronic organs, and I know how the Leslie speakers work, and to get a realistic Leslie sound requires that you first separate the sound into highs and lows with some kind of crossover, and then process each of these separately. When processing the sound, you then need to have a separate LFO for the lows and the highs, and the inertia effect needs to be greater on the low frequencies. What I mean by this is that when you switch the speed from slow to fast, or vice versa, the speed should change quicker on the highs (I'd guess about a second, although I haven't timed it), while the speed change on the lows should take longer (several seconds, but again, I haven't timed it, so I can't be precise). Also, the changes that take place as those rotors are turning are very complex, and depend to a great extent on the room as the sound bounces off of the walls, ceiling, floor, etc. It isn't a simple vibrato, or vibrato + tremolo + filter modulation. There's a doppler effect that effects the sound differently depending on whether it's direct or reflected. Remember, the doppler shift on a source that's moving away from you is opposite the doppler shift on a source that's moving toward you, so the reflected sound from the back wall would be shifted in the opposite direction from the sound coming to you directly, and the shift from a side wall would be different from either of those. I've heard very few Leslie simulators that even come close to sounding like a real Leslie. Chuck

Hi, all of your points are right, especially the last one ;-) . I have a Hammond XB-1 here, and even this machine offers a really good sounding Leslie simulation. IN fact, besides the effects you desscribed, it's also true that even a true Leslie doesn't sound true as soon as it is conserved in a stereo recording. But anyway, there have been good emulations like found in some Dynacord devices, so I guess it is possible to create a cool digital emulation, even if it never will sound like the original. Best regards ce

no need until now, because the leslie in my organ isn't that bad, even is it's not the best one I've ever heard. But I guess it would be cool to stuff some sounds from other synths in it. Will give it a try one day :) . Best regards ce