JP5006315B2 - オーディオ信号のエンコーディング及びデコーディング方法及び装置 - Google Patents
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Description
また、前記目的を達成するための本発明によるオーディオデコーディング装置により行われる、オーディオ信号のデコーディング方法であって、前記オーディオデコーディング装置に含まれる受信部で、それぞれがダウンミックス信号を含む複数のダウンミックス信号フレームと、それぞれが空間情報を含む複数の空間情報信号フレームと、ヘッダーが前記対応する空間情報信号フレームに含まれるか否かを表すヘッダー識別情報とを含み、構成情報を含む前記ヘッダーが前記対応する空間情報信号フレームに含まれることを前記ヘッダー識別情報が示す場合にのみ、前記空間情報信号フレームがヘッダーを含むオーディオ信号を受信し、前記オーディオデコーディング装置に含まれる抽出部で、前記ヘッダーが前記空間情報信号フレームに含まれるときに、前記ヘッダーから構成情報を抽出し、前記ヘッダーが前記対応する空間情報信号フレームに含まれない場合に、前記構成情報は他の空間情報信号フレームに含まれたヘッダーから抽出され、前記オーディオデコーディング装置に含まれる空間情報デコーディング部で、前記空間情報信号フレームから前記空間情報を抽出し、前記オーディオデコーディング装置に含まれる多重チャネル生成部で、前記構成情報と前記空間情報に基づいて前記ダウンミックス信号から多重チャネル信号を生成する、ことを特徴とする。
さらに、前記目的を達成するための本発明によるオーディオ信号デコーディング装置は、それぞれがダウンミックス信号を含む複数のダウンミックス信号フレームと、それぞれが空間情報を含む複数の空間情報信号フレームと、ヘッダーが対応する空間情報信号フレームに含まれるか否かを表すヘッダー識別情報とを含み、構成情報を含む前記ヘッダーが前記対応する空間情報信号フレームに含まれることを前記ヘッダー識別情報が示す場合にのみ、前記空間情報信号フレームがヘッダーを含むオーディオ信号を受信する受信部と、前記ヘッダーが前記対応する空間情報信号フレームに含まれるとき、前記ヘッダーから構成情報を抽出し、前記ヘッダーが前記対応する空間情報信号フレームに含まれない場合に、前記構成情報を他の空間情報信号フレームに含まれたヘッダーから抽出する抽出部と、前記空間情報信号フレームから前記空間情報を抽出する空間情報デコーディング部と、前記構成情報と前記空間情報に基づいて前記ダウンミックス信号から多重チャネル信号を生成する多重チャネル生成部と、を有することを特徴とする。
Claims (10)
- オーディオデコーディング装置により行われる、オーディオ信号のデコーディング方法であって、
前記オーディオデコーディング装置に含まれる受信部で、それぞれがダウンミックス信号を含む複数のダウンミックス信号フレームと、それぞれが空間情報を含む複数の空間情報信号フレームと、ヘッダーが対応する空間情報信号フレームに含まれるか否かを表すヘッダー識別情報とを含み、構成情報を含む前記ヘッダーが前記対応する空間情報信号フレームに含まれることを前記ヘッダー識別情報が示す場合にのみ、前記空間情報信号フレームがヘッダーを含むオーディオ信号を受信し、
前記オーディオデコーディング装置に含まれる抽出部で、前記ヘッダーが前記空間情報信号フレームに含まれるときに、前記ヘッダーから構成情報を抽出し、前記ヘッダーが前記対応する空間情報信号フレームに含まれない場合に、前記構成情報は他の空間情報信号フレームに含まれたヘッダーから抽出され、
前記オーディオデコーディング装置に含まれる空間情報デコーディング部で、前記空間情報信号フレームから前記空間情報を抽出し、
前記オーディオデコーディング装置に含まれる多重チャネル生成部で、前記構成情報と前記空間情報に基づいて前記ダウンミックス信号から多重チャネル信号を生成する、
オーディオ信号のデコーディング方法。 - 前記空間情報信号フレームが時間スロットの位置情報を更に含む、請求項1に記載のオーディオ信号のデコーディング方法。
- 更に、前記空間情報信号フレームに含まれるパラメータを、前記位置情報を使って、対応する時間スロットに適用する、請求項2に記載のオーディオ信号のデコーディング方法。
- 前記空間情報信号フレームが、前記空間情報と前記ダウンミックス信号との時間遅延差を表わす時間整列情報を更に含む、請求項1に記載のオーディオ信号のデコーディング方法。
- 更に、前記時間整列情報に基づいて、前記ダウンミックス信号と前記空間情報とを組み込んで開始位置を調整する、請求項4に記載のオーディオ信号のデコーディング方法。
- オーディオ信号デコーディング装置であって、
それぞれがダウンミックス信号を含む複数のダウンミックス信号フレームと、それぞれが空間情報を含む複数の空間情報信号フレームと、ヘッダーが対応する空間情報信号フレームに含まれるか否かを表すヘッダー識別情報とを含み、構成情報を含む前記ヘッダーが前記対応する空間情報信号フレームに含まれることを前記ヘッダー識別情報が示す場合にのみ、前記空間情報信号フレームがヘッダーを含むオーディオ信号を受信する受信部と、
前記ヘッダーが前記対応する空間情報信号フレームに含まれるとき、前記ヘッダーから構成情報を抽出し、前記ヘッダーが前記対応する空間情報信号フレームに含まれない場合に、前記構成情報を他の空間情報信号フレームに含まれたヘッダーから抽出する抽出部と、
前記空間情報信号フレームから前記空間情報を抽出する空間情報デコーディング部と、
前記構成情報と前記空間情報に基づいて前記ダウンミックス信号から多重チャネル信号を生成する多重チャネル生成部と、
を有するオーディオ信号デコーディング装置。 - 前記空間情報信号フレームは時間スロットの位置情報を更に含む、請求項6に記載のオーディオ信号デコーディング装置。
- 前記多重チャネル生成部は、前記空間情報信号フレームに含まれるパラメータを、前記位置情報を使って、対応する時間スロットに適用する、請求項7に記載のオーディオ信号デコーディング装置。
- 前記空間情報信号フレームが、前記空間情報と前記ダウンミックス信号との時間遅延差を表わす時間整列情報を更に含む、請求項6に記載のオーディオ信号デコーディング装置。
- 前記多重チャネル生成部が、前記時間整列情報に基づいて、前記ダウンミックス信号と前記空間情報とを組み込んで、開始位置を更に調整する、請求項9に記載のオーディオ信号デコーディング装置。
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JP2009500659A5 JP2009500659A5 (ja) | 2009-03-12 |
JP5006315B2 true JP5006315B2 (ja) | 2012-08-22 |
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