全数字音频功率放大器

随着现代电子技术的迅速发展,音频功率放大器经历了从模拟音频功放到数字音频功放的发展。本文介绍一种基于单片机控制的新一代全数字音频功率放大器,采用DDX技术能直接将音频信号进行处理得到PWM信号,取消模拟转换部分,对音频信号的音量、音调、EQ匀衡等处理都是直接数字化处理,它具有效率高并且能与数字音源直接对接,实现端到端的纯数字音频处理和放大等优点。

With the rapid development of modem electronic technology, audio power amplifier has experienced the development from analog audio amplifier to digital audio power amplifier, this pape will introduce a new generation of digital audio power amplifier based on control of MCU that use DDX technology can directly make the audio signal become PWM signal, cancel analog converting part, processing the audio signal volume, pitch, EQ uniform weights are direct digital processing, it is efficiency and can direct docking with the digital audio, end to end of pure digital audio processing and amplification, etc.