Noise Robust End-to-End Speech Recognition for Bangla Language

Abstract

Robust speech recognition system is crucial for real-world applications and speech signal generally contains considerable amount of noise. We propose an end-to-end deep learning approach leveraging current progresses in Automatic Speech Recognition system to recognize continuous Bangla speech for noisy environments. We improve the robustness of our model through data augmentation and deep model architecture. We evaluate our model on an internal and two available datasets. We achieve impressive result on both clean read and noisy speech data. Our model achieves 10.65 % and 34.83 % CER on CRBLP (clean read) and Babel (noisy) respectively, which is state of the art for continuous Bangla speech recognition to the best of our knowledge. For our internal data set, we achieved 12.31 % and 9.15 % CER on clean and noisy speech respectively.