fromtoin()

Category

Envelope / Control

Description

Per-note linear ramp. It starts at from when the voice starts, moves to to during the requested sample length, and then holds the final value.

Arguments

• from: initial value, clamped to the 0.0 to 1.0 range
• to: final value, clamped to the 0.0 to 1.0 range
• samples: ramp length in Syntropy's 44.1k reference sample domain. Values less than or equal to 0 jump immediately to to.

Typical Values

Use 4410 for about 0.1 seconds, 22050 for about 0.5 seconds, 44100 for about 1 second, and 88200 for about 2 seconds in the 44.1k reference domain.

Example

fromtoin(0.05, 0.45, 44100)

moog(saw(X), 0.03+0.42*fromtoin(0.0,1.0,22050), 0.35)

sin(X + 0.35*sin(2*X)*fromtoin(0.0,1.0,12000))

Notes

fromtoin() follows the same per-voice time base as pos(), attack(), and release(). Every new note starts its own ramp from from, which makes it useful for one-shot filter opens, modulation-depth fades, phase movement, and evolving attack color.

For pitched oscillator functions, X already contains the current MIDI note pitch and transpose information. Prefer saw(X), sin(X), or pwm(X, 0.4) unless you intentionally want an octave or ratio shift such as 0.5*X or 2*X.