Method and device for reducing quantization distortion of output audio

An audio and digital audio technology, applied in the field of reducing output audio quantization distortion, which can solve the problems of unpleasant sound, loss of sampling accuracy, unnaturalness, etc.

Inactive Publication Date: 2016-08-10
LETV HLDG BEIJING CO LTD +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of attenuating the audio, the sampling accuracy will be lost, resulting in quantization distortion of the audio; and then the distorted audio data will be amplified and played by the speakers of the TV, and the sound will sound unpleasant and unnatural

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for reducing quantization distortion of output audio
  • Method and device for reducing quantization distortion of output audio
  • Method and device for reducing quantization distortion of output audio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0059]In order to solve the problems existing in the prior art when the TV is playing video, when the volume is adjusted to a smaller decibel volume, the audio has serious quantization distortion, and after the distorted audio data is amplified and played by the speaker of the TV, the sound does not sound Pleasing, unnatural questions. The embodiment of the present invention provides a method f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method and a device for reducing the quantization distortion of an output audio. The method for reducing the quantization distortion of the output audio comprises the steps of obtaining initial digital audio data; re-sampling the initial digital audio data to obtain high-precision digital audio data; and conducting the signal attenuation processing of the high-precision digital audio data to output processed audio data. According to the technical scheme of the invention, the initial audio data are re-sampled, and then low-precision audio data are converted into high-precision audio data. Since the audio data obtained through the re-sampling process are high in precision, the dynamic range that can be represented is enlarged. After that, the high-precision audio data are subjected to the subsequent signal attenuation treatment. Compared with the traditional manner that low-precision audio data are directly subjected to signal attenuation, the quantization distortion is reduced, so that the finally played voice is free of the noise generated by the quantization distortion factor. Therefore, the user experience is improved.

Description

technical field [0001] The present disclosure relates to the field of television technology, in particular to a method and device for reducing output audio quantization distortion. Background technique [0002] Smart TV is a new TV product that is equipped with an operating system and can continuously expand and upgrade its functions. The basic tasks of smart TV mainly include the demodulation, decoding and display of media streams such as video streams and audio streams; with the continuous development of Internet technology, the supporting functions that can be realized by smart TVs are constantly enriched and improved. In addition to the existing digital TV service functions, some new value-added service functions have been added, such as remote live broadcast, video on demand, web browsing, digital music, Internet video calling, game interaction and stock trading, etc., which greatly enrich people's lives . [0003] In the prior art, when the TV is playing a video, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N21/439H04N5/60
CPCH04N5/60H04N21/439
Inventor潘洪
OwnerLETV HLDG BEIJING CO LTD