Spectral Finch
AI generated additive instrument with 24 editable partials, two spectrum frames and continuous sound morphing.
Screenshots
Screenshots supplied by the seller.
Description
AI generated. Spectral Finch is a standalone browser additive synthesizer built from individually controlled sine partials.
Draw or numerically edit two 24 partial amplitude spectra, then morph between them while holding notes. Brightness tilt reweights the spectrum, partial stretch creates inharmonic color and alternating stereo placement widens the tone.
Four original patches, playable computer and mouse keys, sustained chord shapes, envelope controls and portable patch files provide a complete sound design instrument. WAV rendering captures a three second chord gate plus attack and release.
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
- Two editable 24 partial spectra with pointer and numeric controls
- Continuous live spectral morphing
- Brightness tilt, partial stretch and stereo spread
- Four original spectral patches and seeded spectrum generation
- Playable keyboard notes with four voice limit
- Sustained major, minor, fifth and single root shapes
- Attack, release and controlled per voice levels
- Patch JSON files and stereo chord WAV rendering
- Measured partial frequency and stereo PCM checks
What’s unfinished
- No sample import, hardware MIDI or DAW sync
- No native plugin builds or performance recording
- Keyboard audition uses a fixed one second gate
- Completed downloads and patch file round trip are not verified
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
AI generated standalone browser synthesizer. Not VST3, Audio Unit or AAX. Each note uses up to 24 partial oscillators, with a four voice limit. Partials above 45 percent of the sample rate or 16 kHz are omitted. Stretch and envelope changes stop held notes. Export captures a fixed chord gate rather than a performed sequence. Keep the page visible. Hosted downloads may be restricted. No physical output or broad browser compatibility certification is claimed.
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.