Check patentability & draft patents in minutes with Patsnap Eureka AI!

Audio coding apparatus and method, audio decoding apparatus and method

A technology for audio coding and coding spectrum, applied in the fields of audio coding devices and audio decoding devices and methods, and can solve problems such as sound quality degradation

Inactive Publication Date: 2017-04-26
SONY CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, it is well known that when the number of spectral SP[J] coded on a frame basis is changed, this change can lead to sound quality degradation

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
  • Audio coding apparatus and method, audio decoding apparatus and method
  • Audio coding apparatus and method, audio decoding apparatus and method
  • Audio coding apparatus and method, audio decoding apparatus and method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0051] [Configuration example of the first embodiment of the audio encoding device]

[0052] image 3 is a block diagram showing a configuration example of the first embodiment of the audio encoding device to which the present technology is applied.

[0053] exist image 3 the configuration shown, with figure 1 Elements shown that are identical to elements have been given the same reference numerals. Duplicate description will be omitted as appropriate.

[0054] image 3 The configuration of the audio encoding device 50 shown is the same as figure 1 The difference in the configuration shown is that windowing sections 51 and 55, frequency conversion sections 52 and 56, normalization coefficient determination sections 53 and 57, normalization coefficient encoding sections 54 and 58, and multiplexing sections are provided. Section 61 to replace figure 1 The windowing section 11, the frequency conversion section 12, the normalization coefficient determination section 13, th...

no. 2 example

[0131] [Configuration example of encoding device]

[0132] Figure 11 is a block diagram showing a configuration example of the second embodiment of the audio encoding device to which the present technology is applied.

[0133] exist Figure 11 the configuration shown, with image 3 The same components as shown are given the same symbols, and repeated descriptions will be omitted as appropriate.

[0134] Figure 11 The illustrated configuration of the audio encoding device 100 is the same as image 3 The configuration shown is different mainly in that normalization sections 101 and 105, quantization sections 102 and 106, encoding sections 103 and 107, and multiplexing sections 104 and 108 are provided instead of the normalization section 15, quantization section section 16, encoding section 17, and multiplexing section 61, and also differ in that a window selection section 109 and a switching section 110 are additionally provided. The audio encoding device 100 is configu...

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 present invention provides an audio coding device, an audio coding method, an audio decoding device, and an audio decoding method, wherein the audio coding device includes: a first windowing part, which multiplies the audio signal by a first window function; a second windowing part, The audio signal is multiplied by a second window function, the characteristics of the second window function are different from the characteristics of the first window function; the window selection part is based on the audio signal multiplied by the first windowing part and the second windowing part For the multiplied audio signal, select the first window function or the second window function as the optimal window function; the encoding section encodes the frequency spectrum of the audio signal multiplied by the optimal window function; and the transmitting section transmits the encoded The partially encoded spectrum and the window function information representing the optimal window function.

Description

technical field [0001] The present technology relates to an audio encoding device and an audio encoding method, an audio decoding device and an audio decoding method, and a program. More specifically, the present technology relates to an audio encoding device and an audio encoding method, an audio decoding device and an audio decoding method, and a program capable of encoding an audio signal by adaptively using a more appropriate window function. Background technique [0002] As an encoding method of an audio signal, generally, MP3 (Moving Picture Experts Group Audio Layer-3), AAC (Advanced Audio Coding), ATRAC (Adaptive Transform Acoustic Coding), etc. are known as a transcoding method. [0003] As an audio encoding apparatus for encoding an audio signal, it is known to divide the audio signal into a plurality of bands and then perform orthogonal transform and quantization on a band basis (for example, refer to Japanese Patent No. 2906483). [0004] figure 1 is a block di...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/022
CPCG10L19/022G10L19/008
Inventor 铃木志朗松村祐树户栗康裕前田祐儿松本淳
Owner SONY CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com