A kind of multi-channel digital audio processor based on dsp
A digital audio and processor technology, applied in the application field of digital audio processing based on DSP, can solve the problems of time-consuming, cost and implementation difficulties, and achieve the effect of reducing installation and application difficulty, good compatibility and good repeatability
Active Publication Date: 2016-05-04
SYSU HUADU IND SCI & TECH INST +1
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[0006] At present, although digital audio processing technology has been vigorously developed, in the domestic audio industry, most audio processing still uses analog technology. Early digital audio processing uses general-purpose DSP chips and external analog-to-digital / digital-to-analog converters (ADC / DAC), such a solution is very difficult to implement, not only time-consuming but also expensive
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[0021] The present invention will be further described below in combination with specific embodiments. Wherein, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical drawings, and should not be construed as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, Enlargement or reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that certain known structures and their descriptions in the drawings may be omitted.
[0022] Such as figure 1 A digital audio processor based on DSP is shown, including DSP digital audio processing part and audio input and output control circuit part, wherein the audio input and output control circuit part includes differential amplification input and output circuit, CODEC audio codec circuit, MCU, power supply circuit, clock circui...
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The invention belongs to the technical fields of electronics and circuits and particularly relates to a DSP (digital signal processing)-based digital audio processing application technology. A DSP-based multi-channel digital audio processor comprises a DSP digital audio processing part and an audio input and output control circuit part, wherein the DSP digital audio processing part comprises a special DSP processor supporting multi-channel audio processing, and the audio input and output control circuit part comprises an MCU (micro-controller unit) control circuit, a CODEC audio codec, a differential amplification input and output circuit, a clock circuit, a serial communication circuit, an external flash memory and a power supply circuit. The DSP-based multi-channel digital audio processor provided by the invention has the advantages of high degree of integration, good stability, strong expansibility, programmable control, capability of supporting remote application upgrading and the like, and is widely applied to the fields of automobile audio processing, professional acoustics, navigation systems, entertainment systems, digital power amplifiers and the like at present.
Description
technical field [0001] The invention belongs to the field of electronics and circuit technology, in particular to a DSP-based digital audio processing application technology. Background technique [0002] With the development of digital technology, digitized audio technology has made great progress. From the introduction of CD 20 years ago, to SACD, DVD audio disc, and now MP3 multimedia player, digital audio technology has greatly changed people's life experience and listening habits. [0003] The deepening of digitalization has made the integration of IT industry and audio industry more closely. In the past two decades, although digital audio processing technology has been greatly developed, in the audio industry, most of the audio processing is still in the form of analog. Traditional analog audio equipment is realized by building components, which is large in size, low in precision and poor in stability, and is easily disturbed by the external environment. However, audi...
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IPC IPC(8): G11C7/16
Inventor 徐永键陈家承杨顺闻谭洪舟
Owner SYSU HUADU IND SCI & TECH INST