STA321MP中文资料Scalable digital microphone processor数据手册ST规格书

描述 Description

The STA321MP is a PDM, high-performance, multichannel processor with ultra-low quiescent current. It is designed for general-purpose digital microphone applications. The device is fully digital and is comprised of three main sections. The first section is the PDM input interface which can accept up to six serial digital inputs. The second section is a high-quality audio processor allowing flexible channel mixing/muxing and provides up to 10 biquads for general sound equalization and voice enhancement with independent volume control. The last block is the I²S output interface which streams out the processed digital audio. The output interface can also be programmed for flexible channel mapping. The device offers some of the most commonly required audio enhancements such as programmable voice tuning and equalization, limiter/compressor for improved voice quality, multiband selection for customizable microphone usage, and configurable wind-noise rejection. The embedded digital processor allows the microphone processing to be offloaded from the main CPU or SoC to the device.

特性 Features

8 digital processing channels each 24-bits6 channels of PDM input
2 additional virtual channels

>100 dB SNR and dynamic range
Digital gain/attenuation 58 dB to -100 dB in 0.5 dB steps
Soft volume update
Individual channel and master level control
Up to 10 independent 32-bit user-programmable biquads (EQ) per channel
Bass/treble tone control
Pre- and post-EQ full 8-channel input mix on all 8 channels
Dual independent limiters/compressors
Dynamic range compression or anti-clipping modes
Individual channel and master soft/hard mute
3 I²S data outputs
I²S data output channel mapping function
Independent channel volume and DSP bypass
Channel mapping of any input to any processing channel

简介

STA321MP属于集成电路（IC）的音频专用。由制造生产的STA321MP音频专用音频专用的半导体器件专为音频信号的滤波、驱动、放大、转换和接口而设计。特征包括功能、应用、通道数、接口、电压和规格。应用包括音频系统、汽车音频、消费类音频、乐器、专业音频、通信系统、电信系统、数字音频、驱动器、前置放大器、信号混合、信号处理、语音触发器解决方案和 10 Base-T。