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Tempo Terrace

AI generated tempo map designer with exact beat time conversion, ramp curves and conductor MIDI export.

Screenshots

Screenshots supplied by the seller.

Description

AI generated. Tempo Terrace shapes a production tempo map across eight sections. Set each section length, start tempo, ending tempo and hold, linear or exponential movement.

An analytic beat to time model calculates the section boundaries and total duration. Scale the whole map to fit a target duration, audition a generated click, and inspect the resulting tempo curve. Three original map presets give useful starting points.

Export conductor MIDI with sampled tempo events, a click WAV, a section CSV and editable map JSON. The MIDI approximation error is measured against the analytic map. It is a standalone browser planning utility, not a DAW plugin or synchronized transport.

Condition

Development stage: Mostly built (seller-declared)

Seller-declared: provided by the seller, not independently verified by SellMyVibe.

  • Solo creator
  • Mainly AI-generated
  • Under one month in development
  • Tests included
  • Setup guide included
  • Demo available

What works

  • Eight independently editable tempo sections
  • Hold, linear and exponential BPM curves over beats
  • Analytic beat to seconds and inverse conversion
  • Whole map fit to target duration with range validation
  • Original dramatic, rehearsal and contour presets
  • Rendered click audition and WAV export
  • Format 1 MIDI with conductor and click tracks
  • Selectable tempo event sampling resolution
  • MIDI duration approximation measurement
  • Map JSON and section CSV
  • Mathematical and rendered click tests

What’s unfinished

  • No DAW sync, audio time stretching or native plugin
  • Only 4/4 conductor meter is exported
  • Other browsers, completed downloads and DAW import are unverified

Included assets

Editable source code

Setup and usage documentation

Original sound definitions

Audio verification checks and notes

Real running screenshot

Technologies

HTML, CSS, JavaScript, Web Audio API

Setup requirements

Open index.html or serve the folder with any static HTTP server. Use a deliberate play action to enable audio.

Dependencies and ongoing costs

No third party libraries, paid APIs or required services. A current Web Audio capable browser is required. Optional static hosting can be free.

Known limitations

Standalone browser tempo planning tool. Eight sections of 1 to 32 quarter beats each. BPM is limited to 30 through 240. A hold section uses its start tempo throughout. Ramp tempo events in MIDI are sampled steps and differ slightly from the analytic curve. Fit scales every tempo and fails if the requested duration requires values outside the supported BPM range. Live preview uses a rendered click buffer rather than external clock synchronization. Audio audition and WAV rendering support maps up to 180 seconds; longer maps retain analytic and MIDI functions.

Listings are reviewed for completeness and clarity before publication. Approval is not a guarantee of quality, ownership, security or commercial success. Read the details and ask questions before buying.