# Need help on wav2vec 2.0 models training **URL:** \ **Category:** 🤗Transformers\ **Created:** [July 31, 2021, 5:55pm UTC](https://discuss.huggingface.co/t/need-help-on-wav2vec-2-0-models-training/8880 "2021-07-31T17:55:19Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Krawist](https://avatars.discourse-cdn.com/v4/letter/k/bbce88/32.png) [@Krawist](https://discuss.huggingface.co/u/Krawist)\ **Post date:** [July 31, 2021, 5:55pm UTC](https://discuss.huggingface.co/t/need-help-on-wav2vec-2-0-models-training/8880/1 "2021-07-31T17:55:19Z")
Hello guys, I’m using transformers library and I want to build speech recognition systems base on wav2vec 2.0 I have different problems 1. Base on the exemple here [Wav2Vec2 — transformers 4.7.0 documentation](https://huggingface.co/transformers/master/model_doc/wav2vec2.html#wav2vec2forpretraining) I have tried to pretrain a model. But I have seen in the github on fairseq wav2vec that the loss object at the end, I can call a backward method on, but here I can. 2. how can I perform batch training in wav2vec. Guys please I need help, even another documentation or examples. ---
**Author:** ![ahmedlone123](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@ahmedlone123](https://discuss.huggingface.co/u/ahmedlone123)\ **Post date:** [July 31, 2021, 6:06pm UTC](https://discuss.huggingface.co/t/need-help-on-wav2vec-2-0-models-training/8880/2 "2021-07-31T18:06:04Z")
[https://github.com/huggingface/blog/blob/master/fine-tune-wav2vec2-english.md](https://github.com/huggingface/blog/blob/master/fine-tune-wav2vec2-english.md) try this ---
**Author:** ![Krawist](https://avatars.discourse-cdn.com/v4/letter/k/bbce88/32.png) [@Krawist](https://discuss.huggingface.co/u/Krawist)\ **Post date:** [July 31, 2021, 6:26pm UTC](https://discuss.huggingface.co/t/need-help-on-wav2vec-2-0-models-training/8880/3 "2021-07-31T18:26:36Z")
Thanks you