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Audio switching circuit, electronic device and audio switching method

A switching circuit and audio technology, which is applied in the field of communication, can solve problems such as signal instability and earphone sound quality degradation, and achieve the effects of avoiding interference, high sound quality, and improving power amplifier control accuracy

Active Publication Date: 2022-02-15
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present application is to provide an audio switching circuit, an electronic device and an audio switching method, which can solve the problem that the signal on the reference line of the CODEC DAC in the related art is unstable and causes the sound quality of the earphone to decrease.

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  • Audio switching circuit, electronic device and audio switching method
  • Audio switching circuit, electronic device and audio switching method
  • Audio switching circuit, electronic device and audio switching method

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0031] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," et...

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Abstract

The application discloses an audio switching circuit, electronic equipment and an audio switching method, belonging to the technical field of communication. Among them, the audio switching circuit includes: a high-fidelity module, a codec module, an interface module, a first switch module, and a second switch module; the interface module includes: a reference signal transmission end and a data signal transmission end; the high-fidelity module includes a first Headphone power amplifier, the codec module includes a second headphone power amplifier, in the first working state, the first switch module connects the data signal transmission end with the output end of the first headphone power amplifier, and the second switch module connects the reference signal The transmission end is connected with the first reference ground end; in the second working state, the first switch module connects the data signal transmission end with the output end of the second headphone power amplifier, and the second switch module connects the reference signal transmission end with the second Connected to reference ground. The embodiment of the present application can improve the sound quality of the earphone.

Description

technical field [0001] The application belongs to the technical field of communication, and in particular relates to an audio switching circuit, electronic equipment and an audio switching method. Background technique [0002] High-fidelity (High-Fidelity, HiFi) technology can provide high-performance headphone audio output. In related technologies, the HiFi solution is only started in the application scenario of higher sound quality, otherwise, the codec (COder-DECoder, CODEC ) solution (that is, the platform CODEC integrates the headphone analog / digital signal converter (Digital to Analog Converter, DAC)). Among them, the Type-C switch realizes the control of the HiFi power amplifier or the CODEC power amplifier according to the signal transmitted by the reference line of the HiFi DAC and the reference line of the CODEC DAC. However, the signal on the reference line of CODEC DAC is unstable, so that the audio signal is over-amplified and causes soft clipping, so that when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/00
CPCH04R3/00
Inventor 游利文晏燕楠
Owner VIVO MOBILE COMM CO LTD