OMChroma User ManualHiérarchie de section : Predefined Classes > Hybrid Models > Hybrid Models - SNARE-1Hybrid Models - SNARE-1
Tutorial SNARE-1
Name | Description | Default value |
|---|---|---|
amp | Maximum Amplitude. Linear from >0.0 to 1000 or in dB from 0 to -∞ (see Tutorial Getting Started 02 - Amplitude and Internal Editor for more details) | 200.0 |
freq | (Minimum) current frequency [Hz] | 20.0 |
inha | Amplitude of the pseudo-inharmonic tone [lin, >0.0-1000.0 or dB <= 0.0] | 75.0 |
jta | Amplitude of the jitter/random source [%] | 250.0 |
jtf | (Centre) frequency of the jitter [Hz] | 4000.0 |
bw | Seed value for the recursive pseudo-random formula | 1500.0 |
The SNARE-1 Class realizes a a simple simulation of a snare drum (percussion like sound) with the following controls:
- The amplitude of the harmonic tone,
- The fundamental frequency,
- The amplitude of the pseudo-inharmonic tone,
- The amplitude of the jitter/random source [%],
- The frequency of the jitter [Hz],
- The Seed value for the recursive pseudo-random formula.
The examples A and B focus on the amplitude of the harmonic tone,
The example C deals with the frequency of the harmonic tone,
The examples D and E focus on the amplitude of the pseudo-inharmonic tone,
The examples F and G deal with the amplitude of the random source
The example H fixes on the frequency of the jitter,
The example I focuses on the seed value for the recursive pseudo-random formula. A value between 0 and 1 will produce an initial output of amp * seed. A value greater than 1 will be seeded from the system clock. A negative value will cause seed re-initialization to be skipped.
For the red patches Synt, C#ed and rnd see Appendix-A.
Inside the Class
instr 1
idur = p3
idurosc = 1/idur
isin_amp = (p4 > 0.0 ? (p4*0.001*0dbfs) : (ampdbfs (p4)))
if0 = p5
inh_amp = (p6 > 0.0 ? (p6*0.001*0dbfs) : (ampdbfs (p6)))
iran_amp = (p7 > 0.0 ? (p7*0.001*0dbfs) : (ampdbfs (p7)))
iran_cfq = p8
iran_bw = p9
iranfun = 11
inhfun = 12
iaudiofun = 13
islowenv = 21
ifastenv = 22
; noise
a4 rand iran_amp, iran_bw
a5 poscil a4, idurosc, ifastenv
a6 poscil a5, iran_cfq, iranfun
; pseudo-inharmonic spectrum
a3 poscil iran_amp, idurosc, ifastenv
a4 poscil a3, if0, inhfun
; sine tone
a1 oscili isin_amp, idurosc, islowenv
a2 poscil a1, if0, iaudiofun
asound = a2+a4+a6
out asound
endin
