From korgrd!korgsmtp!dan@uunet.uu.netTue Aug 1 15:04:32 1995 Date: 1 Aug 1995 12:02:07 -0800 From: Dan To: Wavestation List Subject: Re: WAVESTATION Wave-seque Reply to: RE>> WAVESTATION Wave-sequences midi sync Here's some general info on rhythmic Wave Sequences, and syncing them to MIDI Clocks, from the SR manuals. - Dan * * * * * * * Rhythmic Wave Sequences The original idea for Wave Sequences was that of a smooth, gradual transition from one timbre to another. Quickly, however, another application was discovered: the rhythmic Wave Sequence, using abrupt changes in timbre. Some examples of these are The Wave Song (ROM11, #0) and MIDI Clock Song (ROM8, #10). The main difference between rhythmic and smooth Wave Sequences is in the step crossfade times. Typically, smooth Wave Sequences use crossfade times of greater than 10 (often much greater); Rhythmic Wave Sequences, on the other hand, use crossfades of only 0-2. Many of the factory Performances use rhythmic Wave Sequences to trigger drum sounds; you can also create interesting rhythms out of timbral shifts alone, by juxtaposing PCM Waves of different brightness, volume, and harmonic character. Some rhythmic Wave Sequence programming tips: * You can use steps with a volume level of 0 to produce rests. * Crossfades of 0 generally give the best attack for transients when creating rhythmic sequences, but sometimes you may want to use a crossfade of 1 or 2 to smooth things out a little. * * * * * * * Syncing Wave Sequences to MIDI Clocks If you're using a rhythmic Wave Sequence with a MIDI sequencer, it can be convenient to synchronize the Wave Sequence to the sequencer's tempo. This is done by using the Wave Sequence Sync feature, found on both the GLOBAL and MIDI pages. * Press MIDI/GLOBAL to go to the MIDI page. * Cursor left until you see the WaveSeqSync (Wave Sequence Sync) parameter. * Set this parameter to MIDI. * Make sure that your sequencer is set up to send MIDI Clocks - sometimes, this must be explicitly turned on. Also, note that MIDI Time Code is not the same as MIDI Clocks, and cannot be used for syncing Wave Sequences. NOTE: For best results when using a sequencer and syncing Wave Sequences to MIDI clocks, quantize all notes playing Wave Sequences to a few milliseconds before the beat. This will ensure that your sequencer will send out the notes before the clock message, so that the Wave Sequence rhythms will be right on the beat. * * * * * * * MIDI Clocks and Step Duration When Wave Sequence Sync is set to MIDI, each step sounds for the number of MIDI clocks equal to the step's Duration parameter. A step duration of 24, for instance, equals one quarter note; a duration of 12 equals an eighth note; a duration of 6 equals a sixteenth note, and so on. Many of the Rhythmic Wave Sequences in ROM are already set up with these MIDI Clock - compatible durations. This table shows the Step Duration required to achieve a given rhythmic value when syncing to MIDI Clocks. Note Value Step Duration quarter-note 24 quarter-note triplet 16 eighth-note 12 eighth-note triplet 8 sixteenth-note 6 sixteenth-note triplet 4 thirty-second-note 3 thirty-second-note triplet 2 NOTE: Make sure to switch Wave Sequence Sync back to INT when you're done. Only the first steps of the Wave Sequences will play if you've left the Wave Sequence Sync set to MIDI and there are no MIDI clocks coming in.