delay-line

Relations from this entry

No accepted relations in this direction.

Relations to this entry

• pitch-shifter← DEPENDS_ON

  Pitch shifting via time-domain processing requires variable delay lines to resample the signal. Remove delay-line and the core time-stretch mechanism stops operating.

• delay← DEPENDS_ON

  Removal test (Laws 8a/8b): the delay definition's mechanism IS the delay line — 'the input is stored in a delay line (tape loop, bucket-brigade device, or digital buffer), the stored copy is retrieved after the delay time'. Remove the delay line and there is no storage, no retrieval, no repeat to return; the technique reduces to plain mixing. The delay line is an operative component of the circuit, constitutive to delay's operation, not an ambient formalism. Contrast with reverb->delay-line (correctly struck): there the definition covers spring, plate, and chamber mechanisms, so pinning to delay-line caught only a subset; here the defined mechanism is the delay line in all its instantiations, so the pin covers the whole defined endpoint. Pinned sense: delay-line as the storage-and-retrieval element. Direction: delay (dependent) -> delay-line (dependency).

• comb-filter← DEPENDS_ON

  comb-filter DEPENDS_ON delay-line: The comb-filter's entire operational mechanism is the delay-and-add operation — it superimposes a delayed copy of the signal onto the original. Remove the delay-line construct (storage-and-retrieval-with-time-offset) and the comb-filter has no working mechanism: it cannot delay and add without a delay-line. The removal test passes at the object level, not the sayability level.

• tape-delay← INSTANCE_OF

  Tape-delay is a specific kind of delay-line: a device that stores and replays an audio signal after a fixed time delay. A competent speaker would call a tape delay a type of delay line. The nearest kind is delay-line, not tape-loop (which describes the mechanism, not the function).

• flanger← DEPENDS_ON

  flanger DEPENDS_ON delay-line: A flanger operates by modulating the delay time of a delay-line, producing a moving comb-filter effect. Remove the delay-line construct and the flanger's core mechanism vanishes — it becomes nothing. The modulation of delay-time is only meaningful because a delay-line exists to be modulated. Removal test passes.

• phaser← DEPENDS_ON

  A phaser operates by routing signal through a series of all-pass filters that introduce frequency-dependent phase shifts. All-pass filters in audio are implemented using delay-line structures. Remove the delay-line — all-pass filtering cannot function — and the phaser mechanism ceases to operate. The dependency is constitutive: delay-lines are the substrate mechanism enabling the phase-shifting that defines phasing.

• tape-loop← INSTANCE_OF

  A tape loop IS a delay line: a signal storage-and-retrieval construct whose copy is released after a controlled offset, with the offset set physically by head spacing and tape speed (delay time = spacing/speed). Storage depth = loop length. The nearest kind is delay-line, not delay (delay is the phenomenon; delay-line is the device kind). Pinned sense: the physical loop apparatus, per its accepted scope.

• chorus← DEPENDS_ON

  A chorus effect cannot operate without delaying copies of the input signal: the core mechanism creates multiple copies, shifts each copy's playback timing by 15–40 ms, varies that offset with an LFO, and mixes the copies back with the original. Remove delay-line and chorus ceases to function — not merely become unsayable.