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A smart phone native DSD audio decoding method, system and smart phone

An audio decoding, smart phone technology, applied in the field of audio decoding system, can solve the problem of not being able to play DSD music, etc., to achieve the effect of ensuring the sense of hearing

Active Publication Date: 2019-10-08
XIAN RUIXIN MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, it is necessary to provide a smart phone native DSD audio decoding method for the problem that none of the above smart phones can play native DSD music

Method used

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  • A smart phone native DSD audio decoding method, system and smart phone
  • A smart phone native DSD audio decoding method, system and smart phone

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] figure 1 It is a flow chart of the smart phone native DSD audio decoding method in an embodiment, such as figure 1 As shown, the method includes the following steps:

[0023] S10: control the application processor chip of the smart phone to repackage the DSD audio stream into a PCM audio stream, and send it to the DSD audio decoding chip.

[0024] In this method, in order to enable smart phones to play native DSD music, firstly control the application processor chip of the smart phone to repackage the DSD audio stream, and then repackage it into a PCM audio stream. This process does not do...

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Abstract

The invention relates to a native DSD audio decoding method and system of a smart phone and a smart phone. On an application processor chip, the DSD audio stream is repackaged into a PCM audio stream, and then the DSD audio decoding chip restores the original DSD through the PCM audio stream. Audio stream, and finally the audio decoding chip restores the original DSD audio stream to an analog music signal for playback. During this process, no conversion from DSD encoding to PCM encoding is performed, but the DSD audio stream is repackaged into a PCM audio stream. Losing or changing any data information, the quality of music files will not deteriorate, which greatly guarantees the sense of hearing and enables smartphones to play native DSD high-quality audio streams, making a substantial push for smartphones to play HIFI music , It also contributes to the public's ability to enjoy the ultimate music experience through smartphones.

Description

technical field [0001] The present invention relates to an audio decoding system, in particular to a smart phone native DSD audio decoding method, system and smart phone. Background technique [0002] DSD is the abbreviation of Direct Stream Digital, which means direct bit stream digital encoding. It is the encoding mode of SACD (SuperAudio CD), and it is a high-resolution digital audio specification. 64 times) high-sampling method, directly converts the analog music signal waveform into a digital signal in a pulse manner, and stores music with a space nearly four times that of a CD, so it can provide better sound effects, and its audible frequency domain The dynamic range is about 120dB. Due to the high number of sampling times, the sampled music signal waveform is smooth and close to the original analog waveform. Furthermore, since multiple bits are not used, the bit conversion process is omitted, thereby reducing distortion and noise that may be generated due to digital...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00G10L19/16H04M1/02H04M1/725H04M1/72442
CPCH04M1/026G10L19/0017G10L19/167H04M1/72442
Inventor 郑宏志周奕王锋
Owner XIAN RUIXIN MICROELECTRONICS CO LTD
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