DSP software provides full-duplex speakerphones

Edited by the Electronicstalk editorial team Jan 23, 2003

The Spirit RealDuplex hands-free solution is designed to provide core functionality for rapid development of popular hands-free speakerphone devices.

The Spirit RealDuplex hands-free solution is designed to provide core functionality for rapid development of popular hands-free speakerphone devices.

The solution is available on Texas Instruments' TMS320C54x, C54CST and C55x DSP platforms.

Due to the unique algorithms, the software provides high quality echo cancellation in different environments, allowing speakers to constantly enjoy real duplex conversation.

The software significantly shortens development time by encompassing all the building blocks necessary for designing full-duplex hands-free speakerphone devices and supports advanced echo suppression functionality in speakerphone mode.

RealDuplex hands-free solution building blocks are managed by control software module through the simple convenient interface and comprise advanced acoustic echo cancelling, line echo cancelling, telephony signalling and interpolator functionality which provides seamless synchronisation between codecs.

"Having all underlying technology building blocks developed in house, we are proud to provide the complete software package, that delivers enhanced speech quality and enables manufactures to significantly reduce their time-to-market and development costs", said Spirit's CEO, Andrew Sviridenko.

"The solution has given us a competitive edge, as it enables the core functionality to a range of up-to-date telephony applications that has not enough presence on the market up to the moment as well as delivers optimal performance, compared to alternative solutions".

Development cost reduction compared to alternative full-duplex solutions can be attributed to shortened development time, high integration and advanced process technology.

Reducing the component cost enables system designers to implement new performance-enhancing features required by emerging telephony applications, while achieving high speakerphone speech quality and the cost ratios required by consumers.

Spirit's RealDuplex hands-free solution is available now in the form of object codes for TI's TMS320C54x, C54CST and C55x.