Class: Itak

Inherits:
Object
  • Object
show all
Defined in:
lib/itak.rb,
lib/itak/vad.rb,
lib/itak/denoiser.rb,
lib/itak/transcriber.rb

Defined Under Namespace

Classes: Denoiser, Transcriber, VAD

Constant Summary collapse

SAMPLE_RATE = 
16_000

Instance Method Summary collapse

Instance Method Details

#run(src, dest = nil) ⇒ Object 



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# File 'lib/itak.rb', line 11

def run(src, dest=nil)
  src = Pathname(src)
  if dest
    dest = Pathname(dest)
    if dest.directory?
      dest = dest/src.basename.sub_ext(".denoised-vad" + src.extname)
    end
  else
    dest = src.sub_ext(".denoised-vad" + src.extname)
  end
  dest.dirname.mkpath

  waveform, sample_rate = TorchAudio.load(src.to_path)
  raise "Currently only #{SAMPLE_RATE}Hz audio is supported" unless sample_rate == SAMPLE_RATE

  $stderr.puts "Denoising..."
  denoised = Denoiser.new.denoise(waveform)

  $stderr.puts "VAD..."
  vadded = VAD.new.run(denoised)

  saving = Thread.new {
    TorchAudio.save(dest.to_path, vadded.unsqueeze(0), SAMPLE_RATE)
    $stderr.puts "Saved to #{dest}"
  }
  transcribing = Thread.new {
    $stderr.puts "Transcribing..."
    transcription = Transcriber.new.run(vadded)
    transcription_path = dest.sub_ext(".txt")
    transcription_path.write transcription
    $stderr.puts "Transcription saved to #{transcription_path}"
  }
  saving.join
  transcribing.join
  dest
end