PreVox™ Tone Relay is an overlay module for communication software and vocoders (IP, radio, VoIP). It reliably detects tones — both single-frequency and all standard dual-frequency — and transmits them through any codec or transport channel. The tones are reconstructed and phase-stitched on the receive side, ensuring artifact-free transmission even when embedded within speech.

Key Features

• Works with any codec or transport (IP, radio, VoIP)
• Supports detection of single tones and standard dual tones
• Inserts compact in-band codes for efficient transmission
• Reconstructs tones with precise phase-stitching at the receiver
• Artifact-free performance, even when tones are embedded in speech

Applications

• Radio and VoIP communication systems
• Legacy tone signaling support
• Systems requiring reliable in-band tone transport

Please contact us for details.