56 lines
1.5 KiB
Swift
56 lines
1.5 KiB
Swift
import AVFoundation
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extension AudioBuffer {
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func array() -> [Float] {
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return Array(UnsafeBufferPointer(self))
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}
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}
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extension AVAudioPCMBuffer {
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func array() -> [Float] {
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return self.audioBufferList.pointee.mBuffers.array()
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}
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}
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func run() {
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// Please refer to
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// https://github.com/k2-fsa/sherpa-onnx/releases/tag/speech-enhancement-models
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// to download files used in this script
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var config = sherpaOnnxOfflineSpeechDenoiserConfig(
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model: sherpaOnnxOfflineSpeechDenoiserModelConfig(
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gtcrn: sherpaOnnxOfflineSpeechDenoiserGtcrnModelConfig(model: "./gtcrn_simple.onnx"))
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)
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let sd = SherpaOnnxOfflineSpeechDenoiserWrapper(config: &config)
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let fileURL: NSURL = NSURL(fileURLWithPath: "./inp_16k.wav")
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let audioFile = try! AVAudioFile(forReading: fileURL as URL)
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let audioFormat = audioFile.processingFormat
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assert(audioFormat.sampleRate == 16000)
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assert(audioFormat.channelCount == 1)
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assert(audioFormat.commonFormat == AVAudioCommonFormat.pcmFormatFloat32)
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let audioFrameCount = UInt32(audioFile.length)
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let audioFileBuffer = AVAudioPCMBuffer(pcmFormat: audioFormat, frameCapacity: audioFrameCount)
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try! audioFile.read(into: audioFileBuffer!)
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let array: [Float]! = audioFileBuffer?.array()
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let audio = sd.run(samples: array, sampleRate: Int(audioFormat.sampleRate))
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let filename = "enhanced_16k.wav"
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let ok = audio.save(filename: filename)
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if ok == 1 {
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print("\nSaved to:\(filename)")
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} else {
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print("Failed to save to \(filename)")
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}
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}
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@main
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struct App {
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static func main() {
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run()
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}
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}
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