Thanks — I’ll explain what Krisp noise cancellation is and how it works, and highlight practical trade-offs and where you can enable it. What Krisp noise cancellation is • Krisp is an AI-powered noise cancellation feature in LiveKit that removes background noise from audio streams to improve speech clarity for call participants and downstream services like speech-to-text (STT). How it works (where it can run) • On SIP trunks: Setting

krisp_enabled: true

in

SIPInboundTrunkInfo

processes incoming audio from phone callers to remove background noise before forwarding it into the LiveKit room. • In client apps: Use the

@livekit/krisp-noise-filter

package (v^0.3.0) in frontends (for example, Next.js) to apply noise cancellation directly in the browser. • In agents: Noise cancellation can be applied in agent logic — for SIP/telephony participants using

BVCTelephony()

and for WebRTC participants using

BVC()

— to filter out background sounds and non-primary speakers. Practical trade-offs and best practices • CPU usage: Krisp improves audio quality but consumes significant CPU, especially on low-powered devices. Consider disabling Krisp when CPU constraints are likely to impact performance. • Avoid double-processing: Don’t enable Krisp at multiple points for the same audio path (for example, both on the SIP trunk and again in the agent/frontend). Double-processing can degrade audio quality and reduce STT accuracy. • Where to enable: Choose a single, appropriate location to apply Krisp depending on your architecture — at the trunk for phone callers, in the client for browser users, or in agent telephony logic for call-center flows. When to use Krisp • It’s especially valuable in noisy environments (call centers, public spaces) where clear audio and accurate STT are important. If you’d like, I can: • Help you decide the best place to enable Krisp for your setup (SIP trunk vs client vs agent) — tell me about your architecture (are callers joining via SIP, web clients, or both?). • Provide example code or configuration for enabling Krisp in the frontend, SIPInboundTrunkInfo, or agent logic. Sources: sip | livekit/livekit_composite | DeepWiki | examples/voice_agents | livekit/livekit_composite | DeepWiki | Choosing the right noise cancellation for your agent | LiveKit | Optimizing Video Calls for Low-Powered Devices | LiveKit | Turns overview | LiveKit Documentation