wav2vec2-xlsr-53-ft-cy-en-withlm

An acoustic encoder model for Welsh and English speech recognition accompanied with a n-gram language model. The acoustic model is fine-tuned from facebook/wav2vec2-large-xlsr-53 using transcribed spontaneous speech from techiaith/banc-trawsgrifiadau-bangor (v24.01) and Welsh and English speech data derived from version 16.1 the Common Voice datasets techiaith/commonvoice_16_1_en_cy

The accompanying language model is a single KenLM n-gram model trained with a balanced collection of Welsh and English texts from OSCAR, thus avoiding language specific models and language detection during CTC decoding.

Usage

The wav2vec2-xlsr-53-ft-cy-en-withlm model can be used directly as follows:

import torch
import torchaudio
import librosa

from transformers import Wav2Vec2ForCTC, Wav2Vec2ProcessorWithLM

processor = Wav2Vec2ProcessorWithLM.from_pretrained("techiaith/wav2vec2-xlsr-53-ft-cy-en-withlm")
model = Wav2Vec2ForCTC.from_pretrained("techiaith/wav2vec2-xlsr-53-ft-cy-en-withlm")

audio, rate = librosa.load(<path/to/audio_file>, sr=16000)

inputs = processor(audio, sampling_rate=16_000, return_tensors="pt", padding=True)

with torch.no_grad():
  tlogits = model(inputs.input_values, attention_mask=inputs.attention_mask).logits

print("Prediction: ", processor.batch_decode(tlogits.numpy(), beam_width=10).text[0].strip())

Usage with a pipeline is even simpler...

from transformers import pipeline

transcriber = pipeline("automatic-speech-recognition", model="techiaith/wav2vec2-xlsr-53-ft-cy-en-withlm")

def transcribe(audio):
    return transcriber(audio)["text"]

transcribe(<path/or/url/to/any/audiofile>)