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58 Tech

Jul 6, 2023 · Artificial Intelligence

Design and Optimization of a Kaldi‑Based Speech Recognition Backend at 58.com

This article details the evolution from the initial Kaldi‑based speech recognition architecture (version 1.0) to a re‑engineered version 2.0, describing business background, service components, identified shortcomings, and a series of performance, concurrency, GPU, I/O, GC, and dispatch optimizations that dramatically improve resource utilization, latency, and reliability for large‑scale voice processing at 58.com.

AIGPUKaldi

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Design and Optimization of a Kaldi‑Based Speech Recognition Backend at 58.com

58 Tech

Jun 21, 2023 · Artificial Intelligence

GPU Hotword Enhancement for WeNet End-to-End Speech Recognition

This article explains the design, implementation, and experimental evaluation of hot‑word augmentation in WeNet's GPU runtime, detailing how character‑ and word‑based language model scoring are extended to boost recognition of rare proper nouns in both streaming and non‑streaming ASR services.

ASRCTC decoderGPU

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GPU Hotword Enhancement for WeNet End-to-End Speech Recognition

DataFunTalk

Dec 7, 2022 · Artificial Intelligence

Vivo's Self‑Developed Streaming Speech‑Recognition Inference Engine and KunlunChip High‑Performance Inference Library

The article details vivo's development of a high‑accuracy, high‑performance streaming speech‑recognition inference engine built on the wenet framework, its optimization techniques such as dynamic batching and memory pooling, collaborative acceleration with KunlunChip's high‑performance inference library, and extensive performance benchmarks demonstrating multi‑batch GPU and XPU gains.

AI inferenceKunlun chipSpeech Recognition

0 likes · 10 min read

Vivo's Self‑Developed Streaming Speech‑Recognition Inference Engine and KunlunChip High‑Performance Inference Library