Multi-state speech encoder and decoder

Multi-station audio distribution apparatus

Multi-station voice recognition and processing system

Multi-unit audio connecting system

Multi-user speech recognition system

Multi-zone audio distribution amplifier

Multifrequency detection

Multiple broadcast channel transmitter arrangment

Multiple input silent audio switch

Multiple parameter speaker recognition system and methods

Multiplier/adder circuit

Multipulse excited pole-zero filtering approach for noise reduct

Multipulse LPC speech processing arrangement

Multirate digital transmission method and device for implementin

Multirate digital transmission method and device for implementin

Music tone pitch shift apparatus

Muting circuit

Muting circuit in a digital audio system