Multi-Rate Processing for Active Noise Cancellation

Abstract

Techniques and apparatuses are described that implement multi-rate processing for active noise cancellation. Instead of performing active noise cancellation using a single processing rate, multi-rate processing utilizes multiple processing paths associated with multiple processing rates. With the multiple processing rates, active-noise-cancellation circuitry can avoid the tradeoff between responsiveness (e.g., latency) and power efficiency (e.g., power consumption) that is associated with a single processing rate and instead be tailored for both responsiveness and power efficiency. To overcome the tradeoff, at least one of the processing paths has a processing rate that facilitates responsiveness and at least one other processing path has a processing rate that facilitates power efficiency. In this way, the described techniques for multi-rate processing enables the active-noise-cancellation circuitry to realize both a target level of responsiveness and a target power efficiency.

Dependencies are inferred from the claim text.