VAD | BestHub

58 Tech

May 31, 2021 · Artificial Intelligence

Practical Implementation of Voice Activity Detection (VAD) for Streaming and Offline Scenarios at 58.com

This article presents the design, training, deployment, and evaluation of a self‑developed Voice Activity Detection system used in both real‑time streaming dialogues and offline audio analysis at 58.com, detailing algorithm choices, smoothing strategies, engineering challenges, and future research directions.

AIOffline ProcessingSpeech Recognition

0 likes · 18 min read

Practical Implementation of Voice Activity Detection (VAD) for Streaming and Offline Scenarios at 58.com

58 Tech

Feb 22, 2021 · Artificial Intelligence

Building a Self‑Developed Speech Recognition Engine at 58.com: From Team Formation to Production Deployment

This article details how a three‑person team at 58.com built a self‑developed speech recognition engine in less than a year, covering background, team formation, data annotation, model selection, engineering architecture, performance optimizations, deployment results, and future directions.

ASRKaldiSpeech Recognition

0 likes · 25 min read

Building a Self‑Developed Speech Recognition Engine at 58.com: From Team Formation to Production Deployment

58 Tech

Nov 16, 2020 · Artificial Intelligence

Iterative Optimization of Voice Endpoint Detection for Voice Robots: From Dual‑Threshold to WebRTC VAD and VADNet

This article details the evolution of the voice endpoint detection (VAD) module in 58.com’s voice robot, comparing a dual‑threshold method, Google’s WebRTC VAD, and the deep‑learning based VADNet, and presents experimental results on accuracy, recall, F1 score and online latency.

CRNNReal-time CommunicationVAD

0 likes · 14 min read

Iterative Optimization of Voice Endpoint Detection for Voice Robots: From Dual‑Threshold to WebRTC VAD and VADNet