leestevennz
commited on
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Parent(s):
5f03871
Create app.py
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app.py
CHANGED
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import gradio as gr
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import torch
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import librosa
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import soundfile
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import nemo.collections.asr as nemo_asr
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import tempfile
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import os
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import uuid
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SAMPLE_RATE = 16000
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model = nemo_asr.models.EncDecRNNTBPEModel.from_pretrained("stt_en_conformer_transducer_large")
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model.change_decoding_strategy(None)
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model.eval()
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def process_audio_file(file):
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data, sr = librosa.load(file)
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if sr != SAMPLE_RATE:
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data = librosa.resample(data, sr, SAMPLE_RATE)
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# monochannel
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data = librosa.to_mono(data)
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return data
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def transcribe(Microphone, File_Upload):
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warn_output = ""
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if (Microphone is not None) and (File_Upload is not None):
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warn_output = "WARNING: You've uploaded an audio file and used the microphone. " \
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"The recorded file from the microphone will be used and the uploaded audio will be discarded.\n"
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file = Microphone
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elif (Microphone is None) and (File_Upload is None):
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return "ERROR: You have to either use the microphone or upload an audio file"
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elif Microphone is not None:
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file = Microphone
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else:
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file = File_Upload
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audio_data = process_audio_file(file)
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with tempfile.TemporaryDirectory() as tmpdir:
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audio_path = os.path.join(tmpdir, f'audio_{uuid.uuid4()}.wav')
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soundfile.write(audio_path, audio_data, SAMPLE_RATE)
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transcriptions = model.transcribe([audio_path])
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# if transcriptions form a tuple (from RNNT), extract just "best" hypothesis
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if type(transcriptions) == tuple and len(transcriptions) == 2:
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transcriptions = transcriptions[0]
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return warn_output + transcriptions[0]
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iface = gr.Interface(
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fn=transcribe,
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inputs=[
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gr.inputs.Audio(source="microphone", type='filepath', optional=True),
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gr.inputs.Audio(source="upload", type='filepath', optional=True),
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],
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outputs="text",
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layout="horizontal",
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theme="huggingface",
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title="NeMo Conformer Transducer Large - English",
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description="Demo for English speech recognition using Conformer Transducers",
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allow_flagging='never',
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)
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iface.launch(enable_queue=True)
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