Inventor

MARRA ALEXANDER

US17 patents

⚠️ This page may combine multiple inventors who share the name “MARRA ALEXANDER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MARRA ALEXANDER

CRESTRON ELECTRONICS INC

Retrofit digital network speaker system

Retrofit digital network speaker system

Retrofit digital network speaker system

Speaker protection for surround sound systems

Speakerphone system that corrects for mechanical vibrations on an enclosure of the speakerphone using an output of a mechanical vibration sensor and an output of a microphone generated by acoustic signals and mechanical vibrations

Method for use with a speakerphone system that corrects for mechanical vibrations

System for calibration of a speakerphone system utilizing a separate calibration device

Method for use of a calibration system for calibration of a speakerphone system utilizing a separate calibration device

Multi-voice conferencing device soundbar test system and method

Speakerphone system that corrects for mechanical vibrations on an enclosure of the speakerphone using an output of a mechanical vibration sensor and an output of a microphone

Method for use with a speakerphone system that corrects for mechanical vibrations

INTERDIGITAL TECH CORP

Rapid acquisition spreading codes for spread-spectrum communications

Bearer channel modification system for a code division multiple access (CDMA) communication system

Code division multiple access (CDMA) communication system

Capacity management method for a code division multiple access (CDM) communication system

Spread-spectrum system for assigning information signals having different data rates

Spread spectrum system assigning information signals to message-code signals