Method and system for optimizing storage space of audio codec

An audio codec and storage space technology, applied in audio data retrieval, audio data indexing, instruments, etc., can solve the problems of low utilization rate of codec storage space and waste of storage resources, so as to improve reasonable utilization rate and save The effect of storage space

Active Publication Date: 2020-04-28
BEIJING BAIRUI INTERNET TECH CO LTD
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Problems solved by technology

In practical applications, for example, during the encoding and decoding process of a call or listening to music, only a part of the coefficient tables will be used. If all of them are stored, storage resources will be wasted, resulting in a relatively low utilization rate of the storage space of the codec.

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  • Method and system for optimizing storage space of audio codec
  • Method and system for optimizing storage space of audio codec
  • Method and system for optimizing storage space of audio codec

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Embodiment Construction

[0020] In order to make the above features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The detailed description is only for helping to understand the present invention, and the protection scope of the present invention is not limited to the specific description in the specific implementation.

[0021] combine figure 1 and figure 2 The application architecture of a method for optimizing the storage space of an audio codec provided by an embodiment of the present invention is described.

[0022] Such as figure 1 As shown, in one embodiment of the present invention, the offline processing of the method for optimizing the storage space of the audio codec of the present invention is completed by the following steps.

[0023] Step S101 is the step of generating the second window function coefficient table. In this step, only the...

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Abstract

The invention discloses a method and a system for optimizing the storage space of an audio codec, and belongs to the technical field of audio data processing. The method for optimizing the storage space of the audio codec comprises the following steps of: in offline processing, only a first window function coefficient table of a low-delay improved discrete cosine transform LD-MDCT window functionwith a first sampling rate of 44.1 kHz or 48kHz being subjected to differential encoding to obtain and store a second window function coefficient table, so that the window function storage space is saved; storing a first CORDIC operation coefficient table in offline processing, so that the storage space of a forward rotation coefficient table and a backward rotation coefficient table is saved; andstoring the left half or right half coefficient table in the first resampling coefficient table of the long-term post-filter LTPF as the second resampling coefficient table in offline processing, sothat the storage space of the LTPF resampling coefficient table is saved, the storage space of a codec is saved on the whole, and the reasonable utilization rate of storage resources is improved.

Description

technical field [0001] The invention relates to the technical field of audio data processing, in particular to a method and system for optimizing the storage space of an audio codec. Background technique [0002] With the continuous development of the mobile communication field, the application of Bluetooth technology is also becoming more and more extensive, especially in the application of Bluetooth audio. [0003] At present, the Bluetooth International Alliance has jointly launched LC3 codec technology with many manufacturers. Since the original intention of LC3 codec technology is to meet the audio applications in the field of low-power Bluetooth, the power consumption requirements for LC3 codecs are very strict. However, in the field of Bluetooth low energy consumption, many processors have very limited computing performance and storage resources. [0004] Table 1 is the main coefficient table in the LC3 codec. In practical applications, for example, in the codec pro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/16G06F16/61
CPCG10L19/16G06F16/61
Inventor 李强王尧叶东翔朱勇
Owner BEIJING BAIRUI INTERNET TECH CO LTD
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