# Cantilla

> Sings vowels by frequency modulation: formants locked in place as the pitch glides, a two-axis vowel pad, throat, breath, vibrato and ensemble. Vowels only: no words, lyrics or likeness of any voice.

- Instrument id: `org.sournd.instrument.cantilla`
- Kind: instrument (a synth you play with notes, keys or MIDI)
- Voices: 8 voices
- Tier: Paid
- Version: 0.1.0
- Price: £4.99 once (yours for good, with updates), or in the Synths and Everything plans

## Get it

Buy it once for £4.99 (https://sournd.com/sounds/cantilla/, PayPal, no account), or get every synth with the Everything plan (https://sournd.com/pricing/index.md). An AI agent can quote it with the MCP tool `get_price` and start a checkout with `create_checkout`.

## Parameters

| Id | Key | Name | Min | Max | Default | Unit |
|---|---|---|---|---|---|---|
| 0 | `vowel_x` | Vowel front to back | 0 | 1 | 0.5 | - |
| 1 | `vowel_y` | Vowel close to open | 0 | 1 | 0.5 | - |
| 2 | `throat` | Throat | 0 | 1 | 0.35 | - |
| 3 | `formant_shift` | Formant shift | -12 | 12 | 0 | st |
| 4 | `formant_spread` | Formant spread | 0.5 | 1.5 | 1 | x |
| 5 | `vibrato_rate` | Vibrato rate | 0.1 | 12 | 5.2 | Hz |
| 6 | `vibrato_depth` | Vibrato depth | 0 | 100 | 12 | ct |
| 7 | `vibrato_delay` | Vibrato delay | 0 | 2000 | 250 | ms |
| 8 | `breath` | Breath | 0 | 1 | 0.1 | - |
| 9 | `pressure_vowel` | Pressure to vowel | 0 | 1 | 0.5 | - |
| 10 | `attack` | Attack | 1 | 10000 | 60 | ms |
| 11 | `decay` | Decay | 1 | 10000 | 400 | ms |
| 12 | `sustain` | Sustain | 0 | 1 | 0.85 | - |
| 13 | `release` | Release | 1 | 10000 | 350 | ms |
| 14 | `ensemble` | Ensemble | 0 | 1 | 0.25 | - |
| 15 | `velocity` | Velocity to level | 0 | 1 | 0.5 | - |
| 16 | `level` | Level | 0 | 1 | 0.7 | - |

## Play it from code

Instruments use the same C ABI as effects, plus note input: `sournd_engine_note_on(e, note, velocity, sample_offset)`, `sournd_engine_note_off(e, note, sample_offset)` and `sournd_engine_all_notes_off(e)`. In JUCE, the bridge feeds your `MidiBuffer` straight in. See the [C ABI reference](https://sournd.com/docs/abi/index.md).