Whisper Medium Cv11 German Ct2

🚀 用于德语自动语音识别的微调whisper-medium模型

本模型是一个经过微调的模型，基于openai/whisper-medium，在mozilla-foundation/common_voice_11_0德语数据集上进行训练。使用该模型时，请确保语音输入的采样率为16Khz。该模型还能预测大小写和标点符号。

此模型是bofenghuang/whisper-medium-cv11-german转换为ctranslate2的版本。

🚀 快速开始

本模型是一个经过微调的版本，基于openai/whisper-medium，在mozilla-foundation/common_voice_11_0德语数据集上进行训练。使用该模型时，请确保语音输入的采样率为16Khz。该模型还能预测大小写和标点符号。

✨ 主要特性

• 基于微调的whisper-medium模型，适用于德语自动语音识别。
• 能够预测大小写和标点符号。

📚 详细文档

性能

以下是预训练模型在Common Voice 9.0上的字错率（WER）。这些结果来自原始论文。

以下是微调模型在Common Voice 11.0上的字错率（WER）。

💻 使用示例

基础用法

使用🤗 Pipeline进行推理

import torch

from datasets import load_dataset
from transformers import pipeline

device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")

# Load pipeline
pipe = pipeline("automatic-speech-recognition", model="bofenghuang/whisper-medium-cv11-german", device=device)

# NB: set forced_decoder_ids for generation utils
pipe.model.config.forced_decoder_ids = pipe.tokenizer.get_decoder_prompt_ids(language="de", task="transcribe")

# Load data
ds_mcv_test = load_dataset("mozilla-foundation/common_voice_11_0", "de", split="test", streaming=True)
test_segment = next(iter(ds_mcv_test))
waveform = test_segment["audio"]

# NB: decoding option
# limit the maximum number of generated tokens to 225
pipe.model.config.max_length = 225 + 1
# sampling
# pipe.model.config.do_sample = True
# beam search
# pipe.model.config.num_beams = 5
# return
# pipe.model.config.return_dict_in_generate = True
# pipe.model.config.output_scores = True
# pipe.model.config.num_return_sequences = 5

# Run
generated_sentences = pipe(waveform)["text"]

高级用法

使用🤗 底层API进行推理

import torch
import torchaudio

from datasets import load_dataset
from transformers import AutoProcessor, AutoModelForSpeechSeq2Seq

device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")

# Load model
model = AutoModelForSpeechSeq2Seq.from_pretrained("bofenghuang/whisper-medium-cv11-german").to(device)
processor = AutoProcessor.from_pretrained("bofenghuang/whisper-medium-cv11-german", language="german", task="transcribe")

# NB: set forced_decoder_ids for generation utils
model.config.forced_decoder_ids = processor.get_decoder_prompt_ids(language="de", task="transcribe")

# 16_000
model_sample_rate = processor.feature_extractor.sampling_rate

# Load data
ds_mcv_test = load_dataset("mozilla-foundation/common_voice_11_0", "de", split="test", streaming=True)
test_segment = next(iter(ds_mcv_test))
waveform = torch.from_numpy(test_segment["audio"]["array"])
sample_rate = test_segment["audio"]["sampling_rate"]

# Resample
if sample_rate != model_sample_rate:
    resampler = torchaudio.transforms.Resample(sample_rate, model_sample_rate)
    waveform = resampler(waveform)

# Get feat
inputs = processor(waveform, sampling_rate=model_sample_rate, return_tensors="pt")
input_features = inputs.input_features
input_features = input_features.to(device)

# Generate
generated_ids = model.generate(inputs=input_features, max_new_tokens=225)  # greedy
# generated_ids = model.generate(inputs=input_features, max_new_tokens=225, num_beams=5)  # beam search

# Detokenize
generated_sentences = processor.batch_decode(generated_ids, skip_special_tokens=True)[0]

# Normalise predicted sentences if necessary

📄 许可证

本模型采用Apache-2.0许可证。

📋 模型信息