Quick Guide to Asterisk VQM

Mp3 Ogg Aac Bitrate Size Quality Compression Optimization

NIQA - Competitive Alternative for Non-Intrusive Voice Quality Testing (P.563)

AQuA End to End Drive Testing Technology (VoLTE, VoWiFi, RCS)

NIQA Final Publish

Aqua Wiki

AQuA 6.x Manual

Voice Impairments Detection Library

Voice Quality Impairments Detection. Recommended Call Quality Metrics.