35 lines
1012 B
Ruby
Executable File
35 lines
1012 B
Ruby
Executable File
#!/usr/bin/env ruby
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# frozen_string_literal: true
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require "vosk"
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require "wavefile"
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WaveFile::Reader.new(ARGV[0]) do |reader|
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reader_format = reader.format
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unless reader_format.channels == 1 && reader_format.bits_per_sample == 16 && reader_format.sample_format == :pcm
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puts("Audio file must be WAV format mono PCM.")
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exit(1)
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end
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model = Vosk::Model.new(lang: "en-us")
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# You can also specify the possible word or phrase list as JSON list,
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# the order doesn't have to be strict
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rec = Vosk::KaldiRecognizer.new(
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model, reader_format.sample_rate,
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'["oh one two three", "four five six", "seven eight nine zero", "[unk]"]',
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)
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reader.each_buffer(4000) do |buffer|
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data = buffer.samples.pack(WaveFile::PACK_CODES.dig(:pcm, 16))
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if rec.accept_waveform(data).nonzero?
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puts rec.result
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rec.grammar = '["one zero one two three oh", "four five six", "seven eight nine zero", "[unk]"]'
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else
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puts rec.partial_result
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end
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end
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puts rec.final_result
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end
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