Struct VadStateMachine 

pub struct VadStateMachine { /* private fields */ }

The QUIET→STARTING→SPEAKING→STOPPING hysteresis shared by every VAD impl.

A faithful port of pipecat VADAnalyzer._run_analyzer: the analyzer supplies the raw per-window voice confidence and a smoothed volume; this machine gates speaking = confidence >= threshold && volume >= min_volume and applies the debounce: STARTING must persist start_frames windows to become SPEAKING, STOPPING must persist stop_frames windows to become QUIET. start_frames/ stop_frames are derived from start_secs/stop_secs and the window duration (window_samples / sample_rate), exactly as pipecat rounds them.

Implementations

impl VadStateMachine

pub fn new(sample_rate: u32, window_samples: usize, params: VadParams) -> Self

Build a state machine for an analyzer producing window_samples-sample windows at sample_rate, with the given debounce/threshold params.

pub fn set_params(&mut self, params: VadParams)

Replace the params and recompute debounce, resetting the running state to QUIET (mirrors pipecat set_params).

pub fn state(&self) -> VadState

The current state without advancing.

pub fn advance(&mut self, confidence: f32, volume: f32) -> VadState

Advance one analysis window. confidence is the model’s voice probability for the window; volume is the window’s normalized loudness in [0, 1] already computed/smoothed by the analyzer (pipecat does the exponential smoothing in the base analyzer before this gate). Returns the new state.

Trait Implementations

impl Clone for VadStateMachine

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VadStateMachine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.