Multi-object audio encoding and decoding apparatus supporting post down-mix signal
US-9685167-B2 · Jun 20, 2017 · US
Broadcast transmitting apparatus and broadcast transmitting method for providing an object-based audio, and broadcast playback apparatus and broadcast playback method
US10657978B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10657978-B2 |
| Application number | US-201916262144-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 30, 2019 |
| Priority date | Dec 22, 2010 |
| Publication date | May 19, 2020 |
| Grant date | May 19, 2020 |
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Abstract
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A broadcast transmitting apparatus and method, and a broadcast playback apparatus and method for providing an object-based audio by encoding and decoding a multichannel audio signal are provided. The broadcast transmitting apparatus may generate audio identification information used to determine whether the multichannel audio signal is an object-based audio signal. When the multichannel audio signal is determined to be the object-based audio signal, based on the audio identification information, the broadcast playback apparatus may control and output the multichannel audio signal for each channel.
First claim
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The invention claimed is: 1. A broadcast playback apparatus, comprising: a multichannel audio signal determining unit to determine whether an encoded multichannel audio signal in a bitstream is an object-based audio signal, based on audio identification information to indicate whether the multichannel audio signal is an object-based audio signal; an audio decoder to decode the encoded multichannel audio signal, when encoded the multichannel audio signal is the object-based audio signal; and a downmixing unit to downmix the multichannel audio signal to a stereo audio signal based on (i) mixing information selected by a user from among input mixing information or (ii) mixing information inputted by a user, when the encoded multichannel audio signal is determined to be the object-based audio signal, wherein the mixing information is mixing ratio of a sound source related to the object-based audio signal. 2. The broadcast playback apparatus of claim 1 , wherein the audio identification information in the form of the descriptor is inserted into a PMT (Program Map Tale) of an MPEG-2 Transport Stream (TS) and is transmitted to the broadcast playback apparatus. 3. A broadcast playback method, comprising: determining whether an encoded multichannel audio signal in a bitstream is an object-based audio signal, based on audio identification information to indicate whether the multichannel audio signal is an object-based audio signal; decoding the encoded multichannel audio signal, when encoded the multichannel audio signal is the object-based audio signal; and downmixing the multichannel audio signal to a stereo audio signal, based on (i) mixing information selected by a user from among input mixing information or (ii) mixing information inputted by a user, when the encoded multichannel audio signal is determined to be the object- based audio signal, wherein the mixing information is mixing ratio of a sound source related to the object-based audio signal. 4. The broadcast playback method of claim 3 , wherein the audio identification information in the form of the descriptor is inserted into a PMT (Program Map Tale) of an MPEG-2 Transport Stream (TS) and is transmitted to the broadcast playback apparatus.
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Classifications
- G10L19/167Primary
Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes · CPC title
involving special audio data, e.g. different tracks for different languages · CPC title
Mode decision, i.e. based on audio signal content versus external parameters · CPC title
- H04H20/89Primary
using three or more audio channels, e.g. triphonic or quadraphonic · CPC title
Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing · CPC title
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- What does patent US10657978B2 cover?
- A broadcast transmitting apparatus and method, and a broadcast playback apparatus and method for providing an object-based audio by encoding and decoding a multichannel audio signal are provided. The broadcast transmitting apparatus may generate audio identification information used to determine whether the multichannel audio signal is an object-based audio signal. When the multichannel audio s…
- Who is the assignee on this patent?
- Electronics & Telecommunications Res Inst
- What technology area does this patent fall under?
- Primary CPC classification G10L19/167. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 19 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).