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Pitch gain obtaining method, pitch gain obtaining device, coder and decoder

A technology of acquisition device and acquisition method, which is applied in the field of communication, can solve the problems of consuming bits and reducing compression rate, etc., and achieve the effect of improving compression rate and solving bit overhead

Active Publication Date: 2011-04-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above technical solution, due to the quantization of the pitch gain before encoding, a large amount of extra bits are consumed, thereby reducing the compression rate

Method used

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  • Pitch gain obtaining method, pitch gain obtaining device, coder and decoder
  • Pitch gain obtaining method, pitch gain obtaining device, coder and decoder
  • Pitch gain obtaining method, pitch gain obtaining device, coder and decoder

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] figure 1 A schematic flow chart of the pitch gain acquisition method provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the pitch gain acquisition method of this embodiment may include the following steps:

[0021] Step 101, acquiring signal information of an input signal;

[0022] Step 102. Acquire the pitch gain corresponding to the signal information of the input signal according to the correspondence relationship bet...

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Abstract

The embodiment of the invention relates to a pitch gain obtaining method, a pitch gain obtaining device, a coder and decoder. The pitch gain obtaining method comprises the steps of obtaining the information of an input signal and obtaining pitch gain which corresponds to the information of the input signal according to the relevant relationship of the information of the input signal and the pitchgain. The embodiment of the invention is applicable to both a coding end and a decoding end by using the preliminarily gained corresponding relationship between the information of the input signal and the pitch gain and according to the corresponding pitch gain which can be gained by the information of the input signal, so that the coding end does not need to transfer the pitch gain to the decoding end, and the problem of the bit consumption is solved. The embodiment of the invention can adaptively confirm the pitch gain according to the information of the input information, avoids consuming extra bit to qualify the pitch gain, does not affect the coding performance and improves the compression rate.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a pitch gain acquisition method, device, encoder, and decoder. Background technique [0002] In the field of speech coding, general speech and audio signals have a certain periodicity, so Long Term Prediction (LTP for short) can be used to remove the long-term periodicity in the speech and audio signals. No matter for lossy compression or lossless compression, the pitch gain obtained through LTP needs to be quantized before encoding. [0003] In the above technical solution, due to the quantization of the pitch gain before encoding, a large amount of extra bits are consumed, thereby reducing the compression rate. Contents of the invention [0004] Embodiments of the present invention provide a pitch gain acquisition method, device, encoder, and decoder, so as to avoid consuming extra bits to quantize the pitch gain and improve the compression rate. [0005] An ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/04G10L19/08G10L19/00
CPCG10L19/08G10L2019/0011
Inventor 张德军苗磊许剑峰齐峰岩张清哈维·米希尔·塔迪李立雄马付伟
Owner HUAWEI TECH CO LTD
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