A noise-robust echo canceller on V830 multimedia RISC processor integrated into a car navigation system

This paper presents a noise-robust, fast-convergence echo canceller and its implementation on a multimedia RISC (reduced instruction set computer). Faster convergence is achieved by introducing an improved noise power estimator for step-size control. This echo canceller has been implemented on V830 multimedia embedded RISC and has been integrated into a car navigation system. The V830 provides a performance comparable to a digital signal processor (DSP) and extended flexibility while the power consumption is lower than that of a DSP. Computer simulations and measurements using a V830 board show fast convergence and robustness against disturbance such as a noise and double-talk without double-talk detection.