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Audio coding method and device

An audio coding and coding technology, applied in the field of audio coding methods and devices, can solve problems such as affecting user experience, sound stuttering, and rough control methods.

Pending Publication Date: 2021-03-19
HUAWEI TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] At present, in the audio transmission process, the audio quality strictly depends on the throughput and stability of the Bluetooth connection link. When the channel quality of the Bluetooth connection link is disturbed, once the bit rate fluctuates greatly, the audio data will be transmitted Lost during the process, resulting in intermittent sound during audio playback, which seriously affects the user experience
Related technologies can control the range of bit rate fluctuations, but the control method is relatively rough, and it cannot take into account the sound continuity and sound quality assurance

Method used

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Embodiment Construction

[0035]In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application , but not all examples. 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.

[0036] The terms "first" and "second" in the description, embodiments, claims and drawings of the present application are only used for the purpose of distinguishing descriptions, and cannot be interpreted as indicating or implying relative importance, nor can they be interpreted as indicating or imply order. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-e...

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Abstract

The invention provides an audio coding method and device. The audio encoding method comprises the following steps: acquiring first audio data; obtaining a target code rate and a Bluetooth packet type,wherein the target code rate and the Bluetooth packet type correspond to the current Bluetooth channel condition; obtaining one or more of a bit pool parameter set, a psychoacoustic parameter set anda spectral bandwidth parameter set through a pre-trained neural network according to the first audio data, the target code rate and the Bluetooth packet type; and encoding the first audio data according to one or more of the bit pool parameter set, the psychoacoustic parameter set and the spectral bandwidth parameter set to obtain a to-be-sent code stream. According to the invention, the Bluetooth channel condition can be adaptively matched, and continuous audio hearing experience is brought while the tone quality is ensured to the maximum extent.

Description

technical field [0001] The present application relates to audio processing technology, in particular to an audio coding method and device. Background technique [0002] With the widespread popularization and use of wireless Bluetooth devices such as True Wireless Stereo (TWS) earphones, smart speakers, and smart watches in daily life, people's demand for high-quality music playback experience in various scenarios has also changed. more and more urgently. Due to the limitation of the data transmission size of the Bluetooth channel, the audio data must be compressed by the audio encoder at the sending end of the Bluetooth device before being transmitted to the receiving end of the Bluetooth device for decoding and playback. The current mainstream Bluetooth codec technology includes Advanced Audio Distribution Profile (A2DP) default sub-band coding (Sub-band Coding, SBC), Motion Picture Experts Group (Moving Picture Experts Group, MPEG) advanced audio coding (Advanced Audio C...

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Application Information

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IPC IPC(8): G10L19/002G10L19/24G06N3/08
CPCG10L19/002G10L19/24G06N3/08H04R2420/07G10L19/032H04W4/80G06N3/084G10L19/005G10L19/008G10L19/167H04R3/12
Inventor 王卓王萌范泛
Owner HUAWEI TECH CO LTD
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