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Overview

Most FluidAudio features expect 16 kHz mono Float32 samples. AudioConverter uses AVAudioConverter under the hood for sample-rate conversion, format conversion (e.g., Int16 → Float32), and channel mixing (stereo → mono).

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File Conversion

import FluidAudio

let converter = AudioConverter()
let samples = try converter.resampleAudioFile(path: "path/to/audio.wav")
// samples: [Float] at 16 kHz mono
Supported inputs: WAV, M4A, MP3, FLAC — anything readable by AVAudioFile.

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Streaming Conversion

let converter = AudioConverter()

func processChunk(_ pcmBuffer: AVAudioPCMBuffer) async throws {
    let samples = try converter.resampleBuffer(pcmBuffer)
    // Feed samples to ASR/VAD/diarization
}
Each conversion is stateless — reuse the same converter instance across formats.