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Method and apparatus for determining parameters in CVSD codec

An encoding device and a technology for encoding data, applied in the field of data processing, can solve the problems of large encoding and decoding errors, overload distortion, and speech distortion of speech signals, and achieve the effects of low resource consumption, good speech quality, and strong robustness

Active Publication Date: 2019-01-04
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, if the scale value is selected unreasonably, there will still be many problems and defects. For example, the encoding and decoding errors of the speech signal are relatively large, especially in the beginning period, which will lead to serious speech distortion, such as overload distortion and grainy distortion

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  • Method and apparatus for determining parameters in CVSD codec
  • Method and apparatus for determining parameters in CVSD codec
  • Method and apparatus for determining parameters in CVSD codec

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Embodiment Construction

[0071] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0072] figure 1 A schematic flowchart of a method 100 for determining parameters in CVSD encoding according to an embodiment of the present application is shown, the method 100 can be performed by an encoding device, such as figure 1 As shown, the method 100 includes: S110, acquiring the coded value c(n) of the nth signal in the data to be coded, the a codes corresponding to the n-a-th signal to the n-1th signal in the data to be coded The values ​​are equal and equal to the first value, n is a positive integer greater than 1, and a is a positive integer less than n; S120, if the coded value c(n) of the nth signal is the first value, according to the size of a, Determine the incremental step Δ corresponding to the n+1th signal in the data to be processed, where Δ>0; S130, according to the incremental step Δ, determine the magnitud...

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Abstract

Embodiments of the present application relate to a codec method and a codec apparatus based on continuous slope variable delta modulation CVSD. The method comprises the following steps of: if the a+1encoded values corresponding to the nth signal to the nth signal in the data to be encoded are all first values, the incremental step length theta corresponding to the n+1th signal in the data to be processed is determined according to the magnitude of a, wherein the theta is larger than zero; the magnitude order value b (n+1) of the (n+1) th signal is determined based on the incremental step length theta. The CVSD-based encoding and decoding method and the encoding and decoding apparatus of the embodiments of the present application have strong robustness, especially in low-rate speech transmission scenarios, have better speech quality and lower resource consumption.

Description

technical field [0001] The present application relates to the field of data processing, in particular to a method for determining parameters in CVSD codec and a codec device. Background technique [0002] With the rapid development of mobile Internet of Things (IOT), artificial intelligence (AI), speech recognition and other technologies, human communication methods and lifestyles have undergone tremendous changes, and the interaction methods between humans and machines have also become diversified. . The voice interaction developed in recent years has attracted the most attention. Human-computer interaction products such as smart speakers, smart wearable devices, and voice assistants have shown a blowout development, and these products are inseparable from the support of voice codec and other technologies. [0003] Speech coding mainly includes waveform coding, parametric coding and hybrid coding. Continuous variable slope delta modulation (CVSD) speech coding in wavefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M3/02
CPCH03M3/024
Inventor 郭红敬王鑫山李国梁蔡学锋李毅
Owner SHENZHEN GOODIX TECH CO LTD