Envelope
streaming mode | Envelope/SFX category
Inputs
- signal (real) - the input signal
Outputs
- signal (real) - the resulting envelope of the signal
Parameters
- applyRectification (bool ∈ {true, false}, default = true) :
- whether to apply rectification (envelope based on the absolute value of signal)
- attackTime (real ∈ [0, ∞), default = 10) :
- the attack time of the first order lowpass in the attack phase [ms]
- releaseTime (real ∈ [0, ∞), default = 1500) :
- the release time of the first order lowpass in the release phase [ms]
- sampleRate (real ∈ (0, ∞), default = 44100) :
- the audio sampling rate [Hz]
Description
This algorithm computes the envelope of a signal by applying a non-symmetric lowpass filter on a signal. By default it rectifies the signal, but that is optional.
- References:
- [1] U. Zölzer, Digital Audio Signal Processing, John Wiley & Sons Ltd, 1997, ch.7
See also
Envelope (standard)