An Ultra Low-power Programmable DSP System for Hearing Aids and Other Audio Applications
Todd A. Schneider, Robert L. Brennan, Peter Balsiger, Alexandre Heubi · 2000
This paper describes an application specific signal processor (ASSP) designed for miniature, u ltra low-power, audio signal processing applications. The ASSP includes a high-fidelity weighted overlap-add (WOLA) filterbank, a 16-bit DSP core, two 14-bit A/D converters, a 14-bit D/A converter and a flexible set of peripherals. This design excels in applications that require efficient frequency-domain processing of one or two audio signals.