allpass()

Category

Filter

Description

All-pass filter that mainly changes phase rather than basic level balance. It is useful for phasey movement, diffuser-style coloration, and building phaser-like textures inside formulas.

Arguments

• input: audio/control signal to process
• cutoff: normalized frequency control
• feedback: feedback or intensity amount

Typical Values

Try cutoff around 0.02 to 0.25 and feedback around 0.05 to 0.60 for animated but controlled results.

Example

allpass(sin(X)+0.4*sin(2*X), 0.03+0.14*param(2), 0.18+0.32*param(3))

Notes

By itself an all-pass can sound subtle. It becomes more obvious when swept over time or stacked with other filtering and stereo movement.