Speech Enhancement Algorithms for Array of Microphones *

SEA²M™ is patented technology for hands-free communication that uses beam-forming array technology to focus a microphone beam on the individual speaker, virtually eliminating all ambient room noise and side conversations.

Usage of the hands-free speech communication systems implies unspecified talker position in the acoustic environment, with variable distances from system's microphones and loudspeakers. Hands-free speech communication in such unknown conditions is the reason for number of technical problems, which should be solved, in order to preserve good quality of speech communication.

All technical solutions depend on multi-microphone sensor systems, and the difference between them is a specific processing of microphone signals1. SEA²M™ system offers one effective solution for hands-free communication systems and their usage in closed acoustic spaces of small and medium dimensions.

SEA²M™ can be applied in real-time systems like:

• Video-phone systems
• Teleconference systems
• Room and car hands-free systems
• Human-machine voice interfaces, etc.

* Serbian patent applications: P-2006/0551, P-2006/0611, P-2006/0612, P-2006/0642
* Serbian trademark registration: SEA²M Z-2281/06