Struct AsrOptions 

pub struct AsrOptions {
    pub language: Option<String>,
    pub word_timestamps: bool,
    pub diarize: bool,
    pub translate: bool,
    pub vad: bool,
    pub vad_threshold: f32,
    pub vad_chunk_secs: f32,
}

Fields

language: Option<String>

Force a language instead of auto-detecting.

word_timestamps: bool

Word-level timestamps (WhisperX-style forced alignment).

diarize: bool

Speaker diarization (WhisperX-style).

translate: bool

Translate to English instead of transcribing.

vad: bool

Segment on speech before transcribing, so silence never reaches the model.

On by default, for measured speed — not for quality.

• Audio with trailing silence: 2.2–4.2× faster, transcript byte-identical.
• Silent input: empty transcript, with no encoder pass at all.
• A live sliding window stops spending five encoder passes to produce nothing.

Corpus WER does move with this on (test-clean 7.99 → 6.79, test-other 16.79 → 16.43), and that is not a quality improvement — do not cite it as one. Per-clip decomposition over 400 clips gives 38 improved and 38 worsened, a sign test of z = 0.00. VAD shifts where speech sits inside Whisper’s fixed 30 s context by ~0.2 s, which re-rolls the decode on about a fifth of clips, half each way; the aggregate moved because WER is dominated by a few high-delta clips. Full descent: docs/whys/vad-quality.md.

Set false for the unsegmented fixed-30 s-grid behaviour.

vad_threshold: f32

Speech threshold, 0..1, higher being stricter. Only read when Self::vad is set.

vad_chunk_secs: f32

Pack speech regions into windows of at most this many seconds.

Trait Implementations

impl Clone for AsrOptions

fn clone(&self) -> AsrOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AsrOptions

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

Formats the value using the given formatter.

impl Default for AsrOptions

fn default() -> Self

Returns the “default value” for a type.