NCT Releases Hardware Module for ClearSpeech

CAMBRIDGE - Cambridge voice technology company, NCT, released its ClearSpeech Module, a solution for integrating NCT's noise reduction and echo cancellation technology into embedded applications. Suitable applications will include wireless systems, intercom systems, Voice over IP and voice recording. This hardware comes with a version of NCT's ClearSpeech software installed.

The ClearSpeech Module is a fixed point dual channel platform based on the ADSP2186 DSP and AD1819 codec. It can be used for a range of applications including two way speech communication systems. Supplied with in-line connectors and mounting holes, the module can be attached to the customer's platform. It can be used at a basic level, supplied only with a regulated 5v power supply and line level audio inputs and outputs. However, engineers also have access to i/o that will trigger LEDs or can set various software parameters should another system be required.

Three standard versions of ClearSpeech are available and can be chosen according to the application, offering combinations of noise cancellation, echo cancellation and signal conditioning according to the demands of the project.

The 3 Eproms that engineers can choose from are:

1) Noise and Echo Cancellation for cellular and Internet telephony, conference phone and intercom applications.

2) Referenced Noise Filter and Noise Cancellation for siren or alarm cancellation, surveillance and voice control of audio systems.

3) Noise Cancellation, a five stage band pass filter and an Intelligent Squelch Filter for radio communication systems.