This paper presents in detail a DSP digital audio processor and frequency response equalizer of the speaker.

本文重点研究了基于DSP的数字音频效果器实现和对扬声器频响特性均衡实现。

youdao

An audio processor is then attached, switched on and tuned in, usually after a month or so.

BBC: bonebridge

The chips will include an 800-megahertz ARM central processor--the same power-sipping design powering many smart phones--with a high-definition video processor, an imaging processor, an audio processor and a tiny, low-power version of the GeForce graphics processors Nvidia pushes for desktop and laptop computers.

FORBES: Magazine Article

Alright, first up we've got the catchily-named BCM20751, which performs the rather ordinary tasks of GPS, Bluetooth, and FM radio management but also throws in an audio processor to offload some work from the phone's primary CPU, which the company says can reduce battery consumption enough to improve playback time by up to 100 percent in some situations.

ENGADGET: Broadcom announces Android support, three-pack of chips to make your phones more awesome