Documentation Index
Fetch the complete documentation index at: https://docs.fluidinference.com/llms.txt
Use this file to discover all available pages before exploring further.
Overview
StreamingEouAsrManager provides real-time streaming ASR with End-of-Utterance detection using the Parakeet EOU 120M model.
Quick Start
let manager = StreamingEouAsrManager(chunkSize: .ms160, eouDebounceMs: 1280)
try await manager.loadModels(modelDir: modelsURL)
// Process audio incrementally
_ = try await manager.process(audioBuffer: buffer1)
_ = try await manager.process(audioBuffer: buffer2)
// Get final transcript
let transcript = try await manager.finish()
// Reset for next utterance
await manager.reset()
Configuration
let manager = StreamingEouAsrManager(
chunkSize: .ms320, // .ms160, .ms320, or .ms1600
eouDebounceMs: 1280 // Minimum silence before EOU triggers
)
EOU Callback
manager.setEouCallback { transcript in
print("End of utterance: \(transcript)")
}
API
| Method | Description |
|---|
loadModels(modelDir:) | Load CoreML models from directory |
process(audioBuffer:) | Process audio incrementally |
finish() | Finalize and return transcript |
reset() | Reset state for next utterance |
appendAudio(_:) | Append audio without processing (VAD integration) |
Benchmarks
LibriSpeech test-clean (2,620 files, 5.4h audio):
| Chunk Size | Latency | WER | RTFx |
|---|
| 160ms | Lowest | ~8% | ~5x |
| 320ms | Balanced | ~5% | ~12x |
| 1600ms | Highest throughput | — | — |
CLI
# Transcribe a file
swift run fluidaudio parakeet-eou --input audio.wav --use-cache
# Benchmark
swift run fluidaudio parakeet-eou --benchmark --chunk-size 160 --max-files 100 --use-cache
