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AT Tapeworm tape deck
Effect · Lo-fi tape

Tapeworm

Worn tape emulator with speed controls: slow the tape itself down to a quarter of real time, live.

Fitted to measurements of real tape processing. The Speed dial slows the tape itself, down to 0.25x, for up to five minutes of tape. Drive it, wobble it, wear it out, or stop it in time with the song. The reels are apples, and the tape is a worm.

Version
0.1.0
Drive
4x oversampled
Longest tape
5 minutes
Formats
VST3 · AU · Standalone

Controls

16 parameters
ControlRangeDefaultWhat it does
Drive0 to 100%0%Pushes the tape's soft clipper harder while pulling the output back, so it saturates without getting much louder.
BoostOn / OffOffA hotter drive curve for more saturation.
Tone0 to 100%50%The tape voicing: a band-pass with a low cut and a 2 to 3 kHz presence, morphed across five measured settings.
Tone EnableOn / OffOnOff leaves only the gentle base path.
Filter-100 to +100%0%Bipolar. Below zero a low-pass down to 63 Hz, above zero a high-pass up to 10 kHz.
Wow0 to 100%0%Slow pitch drift, at 0.82 Hz.
Flutter0 to 100%0%Faster pitch wobble at a few fixed rates.
Wear0 to 100%0%Fast level flutter and random speed jitter.
NoiseOff to 0 dBOffTape hiss, added before the Tone voicing so it takes its shape.
Mechanical NoiseOff to 0 dBOffMotor rumble with a 23 Hz rhythm.
Stereo WidthOn / OffOffGives each channel its own wow, flutter and wear.
OutputOff to +10 dB0 dBOutput level.
Tape StopOn / OffOffSlows the tape to a halt over the Stop Speed.
Stop Speed8 Bar to 1/4 Bar1 BarHow long the stop takes, in time with the host.
Tape Catch-upInstant, Fast-ForwardInstantWhen the tape starts again: jump straight back to real time, or speed through what it missed.
Speed0.25x to 1x1xPlays the tape slower than real time. The tape grows to five minutes; when that runs out, it holds there at normal speed.

How it works

Wow, flutter, wear and the tape stop all move the read point of one delay line, the way a real transport moves tape past the head, so pitch and timing shift together.

The reels turn with the tape. They slow down with Speed and Tape Stop and follow the host's transport.

Signal path

  1. DriveA symmetric two-stage soft clipper, 4x oversampled.
  2. NoiseMono hiss.
  3. ToneThe tape voicing.
  4. WearLevel flutter and speed jitter.
  5. TransportWow, flutter, Tape Stop and Speed.
  6. FilterLow-pass or high-pass.
  7. Mechanical noiseLooped motor rumble, after the voicing.