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目前,模拟放大器在音频放大领域仍被广泛应用。信号经过数字系统部分后,必须经过数/模转换器(DAC)转换成模拟信号才能放大,使数字系统的优越性大打折扣。Apogee Technology公司最近开发出一种称为直接数字放大的DDX系统,可以满足使用音频放大器的PC多媒体和家庭音响系统等要求。该系统特别适用于MP3、MD和CD机等便携式装置中,该系统可以降低电源消耗,延长电池寿命。
At present, the analog amplifier is still widely used in the field of audio amplification. After the signal passes through the digital system part, it must be converted to an analog signal by a digital-to-analog converter (DAC) to be amplified, greatly reducing the superiority of the digital system. Apogee Technology recently developed a DDX system called Direct Digital Amplification that meets the requirements of PC-based multimedia and home audio systems that use audio amplifiers. The system is particularly suitable for portable devices such as MP3, MD and CD players, which reduce power consumption and extend battery life.