Lower WER in real time
Up to 43% relative WER reduction across major ASR providers under real conditions.
Reliable turn detection
Reduces interruptions, missed turns, and timing errors in dialogue.
Fewer background insertions
Cleaner input keeps ASR, VAD, and LLM behavior stable and predictable.
Quail
ASR Primer
Speech enhancement designed to improve STT accuracy across challenging environments. Reduce your Word Error Rate by as much as 30%.
Quail VAD
Voice Activity Detection
Stronger, more robust VAD, designed to work without separate de-noising tools. Outperforms Silero VAD, ensuring your voice agent hears everything, even in complex, real-world environments.
Quail Voice Focus
Primary Speaker Isolation
Primary speaker isolation in real-time, suppressing background speech and noise. Reduces word error rates by up to 43% across leading STT models.
One SDK. Integrated in minutes.
Lightweight and fast: 30ms latency, no GPU needed, no ONNX dependency.
Built for your stack
Native integrations for every major framework.
Your questions, answered
Find everything you need to know about Quail
What is ai-coustics and what problem does it solve for voice AI?
What is Quail Voice Focus? How is it different from noise cancellation?
Which speech enhancement model should I use for voice agents?
Does ai-coustics improve speech-to-text accuracy?
Why can I still hear some background noise after processing?
Can I deploy ai-coustics speech enhancement on-premise?
How do I evaluate ai-coustics Voice AI speech enhancement?
What programming languages does the ai-coustics SDK support?
Does ai-coustics work with LiveKit, Pipecat, and custom pipelines?
How does ai-coustics handle different languages or accents?
