Audio equipment and amplifier power supply voltage control method thereof

Abstract

The invention discloses audio equipment and an amplifier power supply voltage control method thereof, and the method comprises the following steps that: S110, a processing unit of the audio equipment detects the amplitude of a digital audio signal, and obtains a tone quality parameter of the audio equipment; S120, the processing unit calculates the working voltage of an audio power amplifier of the audio equipment according to the amplitude and the tone quality parameter, and outputs a reference voltage digital sequence corresponding to the working voltage to a first digital-to-analog converter; S130, the first digital-to-analog converter converts the reference voltage digital sequence into reference voltage and outputs the reference voltage to a DC-DC circuit of the audio equipment; and S140, the DC-DC circuit outputs a voltage with the same size as the reference voltage as a working voltage of the audio power amplifier. According to the invention, the appropriate working voltage of the audio amplifier can be determined on the basis of meeting the tone quality parameters of the audio equipment.

Description

technical field [0001] The invention relates to the field of audio processing, in particular to an audio device and a method for controlling the power supply voltage of an amplifier thereof. Background technique [0002] With the development and application of multimedia technology, personal audio devices are widely used, including mobile phones, mobile computers, tablet computers, audio players and other portable audio devices. [0003] In the prior art, the operating voltage of the audio power amplifier changes with the magnitude of the analog signal voltage input to the audio power amplifier, but the power consumption of the audio power amplifier accounts for a relatively large proportion of the power output of the audio equipment to the total power consumption of the system. Large, high power consumption. Research has found that the sound quality parameters of audio equipment usually cannot be changed, and in any scenario as long as the analog signal voltage input to th...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the operating voltage of the audio power amplifier changes with the magnitude of the analog signal voltage input to the audio power amplifier, but the power consumption of the audio power amplifier accounts for a relatively large proportion of the power output of the audio equipment to the total power consumption of the system. large, high power consumption

Research has found that the sound quality parameters of audio equipment usually cannot be changed, and in any scenario as long as the analog signal voltage input to the audio power amplifier is the same, the operating voltage of the audio power amplifier is the same, for example, regardless of the audio content being played ( Music audio, call audio, or playing movie audio, etc.), how about the remaining power of the audio equipment, as long as the analog signal voltage input to the audio power amplifier is the same, the operating voltage of the audio power amplifier is the same, which leads to audio power Amplifier consumes more power

Images