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Method, device and system for outputting HiFi (High Fidelity) audio frequency

An audio output and audio technology, which is applied in the field of communication, can solve the problems that mobile terminals cannot meet high-fidelity audio output, and achieve the effect of ensuring sound quality, high-fidelity output and integrity

Inactive Publication Date: 2013-05-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The present invention provides a HiFi audio output method, device and system to solve the problem in the prior art that the mobile terminal as a sound source cannot satisfy high-fidelity audio output

Method used

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  • Method, device and system for outputting HiFi (High Fidelity) audio frequency
  • Method, device and system for outputting HiFi (High Fidelity) audio frequency
  • Method, device and system for outputting HiFi (High Fidelity) audio frequency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like image 3 As shown, an embodiment of the present invention provides a HiFi audio output method, including:

[0060] Step S301, after the audio manager Audio Flinger of the mobile terminal receives the PCM code stream and the PCM format information, it transparently transmits it to the virtual HiFi sound card preconfigured in the mobile terminal;

[0061] Optionally, in this step, when Audio Flinger receives the PCM code stream and the PCM format information, it further includes: Audio Flinger detects whether the mobile terminal has enabled the HiFi output function, and when detecting that the HiFi output function is enabled, the PCM is enabled. The code stream and PCM format information are transparently transmitted to the pre-configured virtual HiFi sound card in the mobile terminal.

[0062] Preferably, when the HiFi output function is enabled, the mobile terminal enables the test mechanism, and establishes and verifies the communication connection between the vi...

Embodiment 2

[0072] like Figure 4 As shown, an embodiment of the present invention provides a mobile terminal, including:

[0073] The audio manager Audio Flinger410 is used to transparently transmit the PCM code stream and PCM format information to the virtual HiFi sound card module 420;

[0074] Among them, Audio Flinger410 is specifically used to detect whether the mobile terminal has turned on the HiFi output function after receiving the PCM code stream and PCM format information, and when detecting that the HiFi output function is turned on, send the PCM code stream and PCM format information. Transparently transmitted to the virtual HiFi sound card module 420 .

[0075] The virtual HiFi sound card module 420 is configured to transmit the PCM code stream and PCM format information to the Mobile-HiFi converter through a communication connection established with the Mobile-HiFi converter.

[0076] The virtual HiFi sound card module 420 is specifically used to transmit PCM format info...

Embodiment 3

[0090] like Figure 8 As shown, an embodiment of the present invention provides a Mobile-HiFi converter, including:

[0091] an information receiving module 810, configured to receive the PCM code stream and PCM format information sent by the mobile terminal side;

[0092] The microprocessor MCU820 is configured to generate an I2S signal based on the PCM code stream and PCM format information received by the information receiving module 810, and output the I2S signal to the audio playback device.

[0093] Preferably, the Mobile-HiFi converter in this embodiment further includes a crystal oscillator group 830; the MCU 820 selects a crystal oscillator matching the PCM format information in the crystal oscillator group 830 based on the PCM format information, and based on the selected crystal oscillator The provided standard clock converts the received PCM stream into an I2S signal with zero error.

[0094] Preferably, the Mobile-HiFi converter in this embodiment further includ...

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Abstract

The invention discloses a method, a device and a system for outputting HiFi (High Fidelity) audio frequency. The method comprises the following steps that after receiving PCM (Pulse Code Modulation) code stream and PCM format information, an audio frequency manager Audio Flinger of a mobile terminal transmits the PCM code stream and the PCM format information to a virtual HiFi sound card preconfigured in the mobile terminal in a unvarnished manner; the virtual HiFid sound card transmits the PCM code stream and the PCM format information to a Mobile-HiFi convertor by virtue of a communication linkage established between the virtual HiFi sound card and the Mobile-HiFi convertor; and the Mobile-HiFi convertor generates an I2S signal based on the received PCM code stream and PCM formation information and outputs the I2S signal to an audio play device. According to the technical scheme adopted by the invention, the mobile terminal can be converted into a wireless digital turntable, so that when the mobile terminal serves as a sound source, the HiFi output of sound quality is ensured, and problems existing in the prior art are well solved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a HiFi (High-Fidelity) audio output method, device and system. Background technique [0002] At present, Android (Android) smart mobile terminals and MID (Mobile Internet Device, mobile Internet devices) have become very popular. There are rich software on Android mobile terminals, which can play offline and online high-quality audio and video files, which is very convenient. everyone's entertainment. Compared with ordinary players, the Android mobile terminal has the advantages of more playing software, good UI (User Interface, user interface) interface, network support, and portability. However, for users who pursue HiFi sound quality and already have a HiFi sound system at home, the sound quality of Android mobile terminals as a HiFi sound source is not ideal. The main reasons for this problem are: [0003] 1. The problem of the SRC (Sample Rate Convert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/16
CPCG06F3/16G06F3/162
Inventor 曾慧鹏
Owner ZTE CORP
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