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Coding device and method, decoding device and method, and program

A technology of decoding device and encoding device, which is applied in speech analysis, instruments, electrical components, etc., can solve the problem of not having metadata, etc., and achieve high-quality results

Active Publication Date: 2018-01-26
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is, some frames may not have metadata

Method used

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  • Coding device and method, decoding device and method, and program
  • Coding device and method, decoding device and method, and program
  • Coding device and method, decoding device and method, and program

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no. 1 approach

[0055]

[0056] The purpose of this technology is to obtain higher-quality sound in the case where an audio signal of an audio object and metadata related to the audio object such as position information are encoded before being transmitted, wherein, on the decoding side, the encoded audio signal and metadata are decoded and audibly reproduced. In the following description, an audio object may be simply called an object.

[0057] The technique involves encoding a plurality of metadata for the audio signal per frame, ie encoding at least two metadata for the audio signal in each frame, before transmitting the encoded metadata.

[0058] Furthermore, metadata in this context refers to the metadata of the samples in each frame of the audio signal, ie the metadata given to the samples. For example, the position in space of an audio object specified by the position information as metadata indicates the timing position at which sound is reproduced from those samples given the meta...

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Abstract

This technology relates to a coding device and method, a decoding device and method, and a program which enable higher-quality sound to be obtained. An audio signal decoding unit decodes coded audio data to obtain an audio signal of each of objects. A metadata decoding unit decodes coded metadata to obtain multiple pieces of metadata for each frame of the audio signal of each of the objects. A gain calculation unit calculates the VBAP gain of the audio signal of each of the objects, speaker by speaker, on the basis of the metadata. An audio signal generation unit multiplies the audio signal ofeach of the objects by the VBAP gain, speaker by speaker, and adds multiplication results to thereby generate an audio signal to be supplied to each speaker. This technology is applicable to a decoding device.

Description

technical field [0001] The present technology relates to an encoding device, an encoding method, a decoding device, a decoding method, and a program. More specifically, the present technology relates to an encoding device, encoding method, decoding device, decoding method, and program for obtaining higher-quality sound. Background technique [0002] In the past, the Moving Picture Experts Group High Quality (MPEG-H), three-dimensional (3D) audio standard for compressing (coding) an audio signal of an audio object and metadata such as position information related to the audio object has been known. (see eg NPL 1). [0003] According to the technique described above, an audio signal of an audio object and its metadata are encoded and transmitted every frame. In this case, at most one metadata is encoded and transmitted per frame of the audio signal of the audio object. That is, some frames may not have metadata. [0004] Furthermore, the encoded audio signal and metadata a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S5/02G10L19/008H04S7/00
CPCG10L19/008H04S3/008H04S7/30H04S2400/11H04S2420/03G10L19/167H04S2400/15H04S5/02H04S7/00
Inventor 山本优树知念彻辻实
Owner SONY CORP