[Fpga-synth] Linear / Expo Release for ADSR Working

Scott Gravenhorst music.maker at gte.net
Tue Apr 7 01:51:47 CEST 2009


Have a listen:

http://home1.gte.net/res0658s/gatemanpoly_bell_lin_expo.wav

This is a sample of two strikes of a bell sound, the first uses linear release, the second uses
exponential release.  There is a marked difference, especially near the end of the fade out.

For those interested...

The bell sound was constructed using 4 oscillators:


waveform    semitones offset
----------------------------------
sine              0
triangle         19
sine             24
sine             36


There is a bit of fine tune offset of each of the oscillators to force them a bit off of an exact
harmonic.

I will be placing ver_n of GateManPoly/8 on the wiki today or tomorrow.  I will probably make some
little musical invention using this sound and include it with the ver_n code as well as the wave
file above since it is so demonstrative of this principle.


-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
-- FPGA MIDI Synthesizer Information: home1.gte.net/res0658s/FPGA_synth/
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/
-- When the going gets tough, the tough use the command line.



More information about the Fpga-synth mailing list