41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
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import json
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from urllib.request import Request, urlopen
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from scipy.io import wavfile
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class Speech:
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@staticmethod
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def __check_wav(wav_file):
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sample_rate, sig = wavfile.read(wav_file)
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channels = len(sig.shape)
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bits = sig.dtype.base.name
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if sample_rate != 16000:
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raise Exception(f'Sample rate is not 16000: {sample_rate}')
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if channels != 1:
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raise Exception(f'Number of Channels is not 1 (Not mono): {channels}')
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if bits != 'int16':
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raise Exception(f'Bits per sample 16: {bits}')
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@staticmethod
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def __load_wav(wav_file):
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Speech.__check_wav(wav_file)
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with open(wav_file, 'rb') as file:
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result = file.read()
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return result
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@staticmethod
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def __stt(wav_file: str, server: str) -> str:
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print(f'Connecting to \'{server}\'...')
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request = Request(url=f'{server}/stt',
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data=Speech.__load_wav(wav_file),
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headers={'Content-Type': 'audio/wav'})
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result = json.loads(urlopen(request).read().decode('utf-8'))
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if not ('code' in result and 'text' in result):
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raise RuntimeError(f'Wrong reply from server: {result}')
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return result['text'] if not result['code'] else f'Server error: {result}'
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def run(self, wav_file, server):
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return self.__stt(wav_file, server)
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