ADI Unveils Personal Sound Zone Technology for In-Car Audio
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Analog Devices (ADI) has unveiled Personal Sound Zone (PSZ) technology that allows occupants in different vehicle seats to listen to different audio. PSZ enables each occupant to hear separate audio without earphones or headphones. A driver, for example, can listen to navigation instructions while the front passenger takes a phone call and rear-seat passengers listen to music. The technology controls sound waves from multiple speakers in real time to minimize audio leakage into other seats, effectively creating an independent "sound space" for each occupant. ADI introduced the PSZ technology and its potential automotive applications in a technology blog post published on Aug. 6. ADI said PSZ combines three of its proprietary technologies: the A2B automotive audio network, SHARC audio digital signal processors (DSPs) and the LISTN portfolio of audio algorithms. A2B is ADI's automotive communications technology that connects microphones, speakers and various audio sensors distributed throughout a vehicle into a single digital audio network. The company introduced its next-generation A2B 2.0 specification in April and began production of the ADAA2457, its first transceiver chip implementing the technology. A2B 2.0 provides bidirectional bandwidth of about 100Mbps, four times that of the previous generation, and can simultaneously carry as many as 119 audio channels over a...
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