DALLAS-Texas Instruments has introduced a new digital signal processing solution designed to give cellular telephone users the safety of hands-free operation in the car along with the audio quality associated with handheld phone use.
TI said its TMS320WP010 enhances hands-free cellular communications with a combination of integrated circuit hardware and ROM-coded software that improves voice quality and brings full-duplex transmission to hands-free cellular technology.
TI said the product will eliminate acoustic echo, noise and line echo problems associated with hands-free phone operation.
“Almost everyone who owns a cellular phone can buy a phone cradle for the dashboard that allows hands-free operations,” said Mike McMahan, applications manager for TI’s wireless communications systems. “But then they find that the sound quality the outside caller hears is often so poor that the caller in the vehicle has to pick up the phone again.”
In hands-free cellular phone operation, a caller’s voice comes out of the phone speaker, bounces off various surfaces inside the car and returns to the microphone, where it is heard by the caller as an echo, McMahan said.
The device is offered by itself or together with two TCM320AC36 voice band audio processors in a chipset that is designated TCS320WP010. In addition, TI will license the cellular audio peripheral enhancement software used in the TCM320AC010 to developers who want to integrate it with their own DSP code.