Fast Streaming Transducer ASR Prototyping via Knowledge Distillation with Whisper

• URL: http://arxiv.org/abs/2409.13499v2
• Date: Mon, 7 Oct 2024 19:16:21 GMT
• Title: Fast Streaming Transducer ASR Prototyping via Knowledge Distillation with Whisper
• Authors: Iuliia Thorbecke, Juan Zuluaga-Gomez, Esaú Villatoro-Tello, Shashi Kumar, Pradeep Rangappa, Sergio Burdisso, Petr Motlicek, Karthik Pandia, Aravind Ganapathiraju,
• Abstract summary: We demonstrate that streaming Transformer-Transducer (TT) models can be trained from scratch without supervised data. This allows training a robust ASR model just in one stage and does not require large data and computational budget. We validate the proposed framework on 6 languages from CommonVoice and propose multiple filters to filter out hallucinated PLs.
• Score: 3.717584661565119
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The training of automatic speech recognition (ASR) with little to no supervised data remains an open question. In this work, we demonstrate that streaming Transformer-Transducer (TT) models can be trained from scratch in consumer and accessible GPUs in their entirety with pseudo-labeled (PL) speech from foundational speech models (FSM). This allows training a robust ASR model just in one stage and does not require large data and computational budget compared to the two-step scenario with pre-training and fine-tuning. We perform a comprehensive ablation on different aspects of PL-based streaming TT models such as the impact of (1) shallow fusion of n-gram LMs, (2) contextual biasing with named entities, (3) chunk-wise decoding for low-latency streaming applications, and (4) TT overall performance as the function of the FSM size. Our results demonstrate that TT can be trained from scratch without supervised data, even with very noisy PLs. We validate the proposed framework on 6 languages from CommonVoice and propose multiple heuristics to filter out hallucinated PLs.

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