[music-dsp] step sequencers

[Theo]

Hi Benny
For a simple stepsequencer:
Just fill a array with (pitch) values and advance every N midi clock pulses
to the next array position.

As for the Accent and Slide functions.

Accent; a function to emphasize the notes on that step.
On analogue sequencers this is just a extra trigger signal.
Most often accent is used to increase the volume for notes that should have
a "accent".
But you may want to consider alternate destinations for accent too like,
- filter cutoff (opening the filter when there is a accent),
- filter resonance (can be quite nice IMO),
- envelope attack rate,
- trigger a alternate or extra sound (the accent/percussion function on
(drawbar) organs do this, although on organs this function is not sequencer
related)

Glide/Slide/Portamento; think Hawaii-guitar.
Don't retrigger the Envelopes, but slowly "slide" to the new pitch.

HTH
Theo


From: benny <benny at scene.ro>



> hi there,
>
> does anybody have any ideea/advices/links on how to implement a step
> sequencer ? I'm interested in what accent/slide functions actually do.
I've
> got oscilators up and running, envelope generators, delay line and a lpf
> filter.
>
> regards,
>     benny
>
>