Smart voice processors from STMicroelectronics

The Smart Voice audio processors offer the capabilities of a digital MEMS microphone in multi-microphone arrays, enabling features like acoustic echo cancellation, noise suppression, or beam-forming, which are increasingly important with the increasing use of cell phones and other consumer devices in noisy and uncontrollable environments.

Multi-microphone systems also address next-generation audio applications, such as 3D sound processing, sound-source localisation, virtual microphones, and audio zooming.

The combination of these Smart Voice processors and digital MEMS microphones creates a powerful and flexible acoustic sub-system that brings a number of advantages to equipment manufacturers and users alike. Manufacturers will benefit from a simplified system design, which reduces costs and time to market and facilitates end-product differentiation, while consumers will enjoy clearer conversations and longer battery life on their devices.

The digital audio processor is based on an optimised hard-wired acoustic processing engine that offloads intensive computing tasks from the main application processor. It handles up to 6 digital microphone inputs with dynamic array re-configuration and dedicated channel processing. The device integrates a high-quality scalable acoustic processing core with a tunable 10-band equalizer, a peak limiter, and gain and volume controls. The data are output through a digital (I2S) or analog (PWM) interface.

The Smart Voice processor comes in a bundle with AP Workbench, a user-friendly programming tool, and together with the Company’s MEMS microphones and Sound Terminal class-D audio amplifiers they form a complete one-stop offering for advanced sound-input applications.

The STA321MPL, the first device in ST’s Smart Voice family, is sampling now and mass production is scheduled for Q2 2012.

STMicroelectronics

Check Also

Configurable Analog Semiconductor IP Enables Faster IoT Chip Design

Agile Analog, a leading provider of semiconductor analog IP, today announced Palma Ceia SemiDesign, a …