arXiv AI By Wei-Tzu Lee, Keisuke Kamahori, Baris Kasikci

Murmur: Efficient Long-Context ASR Inference with Hierarchical Chunking

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The paper introduces Murmur, an inference system that uses hierarchical chunking to improve long-form automatic speech recognition (ASR). By decoding intermediate target chunks in parallel and employing a fast short-window ASR for speculative drafting, Murmur achieves a 2.5× reduction in end-to-end latency while also lowering tcpWER by 1.9 points on average across English and Mandarin meeting datasets.

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