Smart phone native DSD audio decoding method and system and smart phone

An audio decoding and smart phone technology, applied in the field of audio decoding systems, can solve problems such as not being able to play DSD music, and achieve the effect of ensuring the sense of hearing

Active Publication Date: 2016-08-17
XIAN RUIXIN MICROELECTRONICS CO LTD
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Problems solved by technology

[0006] In view of this, it is necessary to provide a smart phone native DSD audio decod

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  • Smart phone native DSD audio decoding method and system and smart phone
  • Smart phone native DSD audio decoding method and system and smart phone

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[0021] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

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

[0023] S10: Control the application processor chip of the smartphone to reassemble the DSD audio stream into a PCM audio stream and send it to the DSD audio decoder chip.

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

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Abstract

The invention relates to a smart phone native DSD audio decoding method and system and a smart phone. A DSD audio stream is repackaged into a PCM audio stream on an application processor chip, a native DSD audio stream is reverted by a DSD audio decoding chip through the PCM audio stream, the audio decoding chip reverts the native DSD audio stream into analog music signals for playing finally, conversion from DSD encoding to PCM encoding is not performed in the process, only the DSD audio stream is repackaged into the PCM audio stream, no data information is lost or changed, the quality of a music file cannot become worse, the listening feeling is guaranteed greatly, the smart phone can play the native DSD high quality audio stream, substantial push is provided for the HIFI music play function of the smart phone, and great contribution is made so that the public can enjoy excellent music experience through the smart phone.

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 (Super Audio CD), and it is a high-resolution digital audio specification. 64 times the high sampling method, directly convert the analog music signal waveform into a digital signal in a pulse manner, and store music in 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...

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Application Information

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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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