Audio

envelope

Applies an ADSR amplitude envelope to audio.

Inputs:

• audio (Json) — input audio
• attack (Number) — attack time in seconds
• decay (Number) — decay time in seconds
• sustain (Number) — sustain level (0-1)
• release (Number) — release time in seconds

Output: audio (Json) — enveloped audio

gain

Adjusts audio amplitude.

Inputs:

• audio (Json) — input audio
• gain (Number) — gain multiplier

Output: audio (Json) — amplified audio

info

Extracts metadata from an audio object.

Inputs:

• audio (Json) — input audio

Output: info (Json) — audio metadata object

mix

Mixes two audio signals together.

Inputs:

• a (Json) — first audio signal
• b (Json) — second audio signal
• balance (Number) — mix balance (0=a, 1=b)

Output: audio (Json) — mixed audio

noise

Generates white noise.

Inputs:

• duration (Number) — duration in seconds
• amplitude (Number) — amplitude (0-1)
• sample_rate (Number) — samples per second

Output: audio (Json) — audio object with noise samples

oscillator

Generates a waveform (sine, square, sawtooth, triangle).

Inputs:

• waveform (Text) — sine, square, sawtooth, or triangle
• frequency (Number) — frequency in Hz
• duration (Number) — duration in seconds
• amplitude (Number) — amplitude (0-1)
• sample_rate (Number) — samples per second

Output: audio (Json) — audio object with samples array

Example: amplitude = 0.5, duration = 0.01, frequency = 440, sample_rate = 44100, waveform = sine → null

See also: noise, mix

reverse

Reverses audio samples.

Inputs:

• audio (Json) — input audio

Output: audio (Json) — reversed audio

trim

Extracts a time range from audio.

Inputs:

• audio (Json) — input audio
• start (Number) — start time in seconds
• end (Number) — end time in seconds

Output: audio (Json) — trimmed audio