Details

Autor(en) / Beteiligte

• Mosner, Ladislav
• Wu, Minhua
• Raju, Anirudh
• Krishnan Parthasarathi, Sree Hari
• Kumatani, Kenichi
• Sundaram, Shiva
• Maas, Roland
• Hoffmeister, Bjorn

Titel

Improving Noise Robustness of Automatic Speech Recognition via Parallel Data and Teacher-student Learning

Ist Teil von

• ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019, p.6475-6479

Ort / Verlag

IEEE

Erscheinungsjahr

2019

Link zum Volltext

• IEEE_Xplore

Quelle

IEEE/IET Electronic Library (IEL)

Beschreibungen/Notizen

• For real-world speech recognition applications, noise robustness is still a challenge. In this work, we adopt the teacher-student (T/S) learning technique using a parallel clean and noisy corpus for improving automatic speech recognition (ASR) performance under multimedia noise. On top of that, we apply a logits selection method which only preserves the k highest values to prevent wrong emphasis of knowledge from the teacher and to reduce bandwidth needed for transferring data. We incorporate up to 8000 hours of untranscribed data for training and present our results on sequence trained models apart from cross entropy trained ones. The best sequence trained student model yields relative word error rate (WER) reductions of approximately 10.1%, 28.7% and 19.6% on our clean, simulated noisy and real test sets respectively comparing to a sequence trained teacher.