JP7319689B2 - 音響ホログラフィック録音およびメタマテリアル層を使用する再生システム - Google Patents
音響ホログラフィック録音およびメタマテリアル層を使用する再生システム Download PDFInfo
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Description
Claims (18)
- 三次元的に録音して再生する方法であり、
離散的チャネルに配列された複数の共振器で反射および/または屈折された後にマイクロフォンで受信するステップと、
デジタル圧縮技術を音に適応した後にマイクロフォンにより出力された音を保存するステップと、
少なくとも一部でも、マイクロフォンまでの離散的チャネルのそれぞれと音響の少なくとも一部の周波数の決定された位相シフトとの間の距離に基づき、複数のピエゾドライバを振動させ、このピエゾドライバは複数の共振器で反射または屈折された音響の指向性を少なくとも一部再生する方法で音響メタ材料を通して振動を送るステップとを含む、方法。 - マイクロフォンはモノラルでも、無指向性でもよく、離散的チャネルのそれぞれから均等に音を受信するように較正される、請求項1に記載の方法。
- 共振器のそれぞれは異なる周波数で共振して、共振器はマイクロフォンの音声入力終了直前に円形状に個別のチャンネルにて擬似ランダムに配列される、請求項2に記載の方法。
- 擬似ランダムに配列された共振器が輪状で離散的チャネルに配列されるが、離散的チャネルは離散的チャネルの2つのチャネルの間にある非共振材料で互いに分離されている、請求項3に記載の方法。
- さらに離散的チャネルそれぞれと、マイクロフォンおよび決定された位相シフトとの間の距離に基づき、複数のピエゾドライバが音響メタ材料を振動させる前に音が出てきた方向を決定する、請求項1に記載の方法。
- 複数のピエゾドライバが複数の共振器の配置との対応が無い状態で音響再生デバイス上の中心点の周囲に等間隔で置かれる、請求項1に記載の方法。
- 複数のピエゾドライバのそれぞれが、複数のピエゾドライバから発生した音波を増幅する単一の音響再生デバイスに取り付けられる、請求項6に記載の方法。
- ホログラフィックサウンドの録音および生み出す方法であって、
複数の共振器で反射または屈折された音響をマイクロフォンで受信するステップを含み、複数の共振器のそれぞれは2台のマイクロフォンに対応し、
2台のマイクロフォンについて、音に関連している音響ホログラフィックデータを得るために、またデジタル圧縮技術を出力に適応した後に出力された音を保存するステップと、
マイクロフォンの対応する1つに対する複数の共振器の各共振器と、対応するマイクロフォンでの出力での少なくとも幾つかの周波数の決定された位相シフトとの間の距離に基づき、ピエゾドライバが複数の共振器で反射された音響の指向性を少なくとも一部再生するやり方で、また再生された音響の位置と方向が検出可能な方法で、音響再生デバイス上に装着された複数のピエゾドライバを振動させるステップとをさらに含む、方法。 - マイクロフォンはモノラルでも、無指向性でもよく、2台のマイクロフォンのそれぞれに対応する複数の共振器のそれぞれから均等に音を受信するように較正される、請求項8に記載の方法。
- 複数のピエゾドライバが中心点から等間隔で置かれたピエゾドライバの第1セットと、音響再生デバイス上の第2の中心点から等間隔で置かれたピエゾドライバの第2セットを含み、また第1セットと第2セット出力のそれぞれは2台のマイクロフォンの別の1台から音響を再生する、請求項8に記載の方法。
- 三次元的に録音して再生するデバイスであって、
それぞれが異なる周波数で共振し、実質的に円形状に配列される複数の共振器と、
三次元平面の少なくとも1つの平面上の複数の共振器の間に位置するマイクロフォンと、
マイクロフォンからの出力に圧縮センシングを適応して音響が圧縮された形で保存する有形的表現記憶媒体と、
音響再生デバイス上の中心点から等間隔で配列された複数のピエゾドライバであって、マイクロフォンからの出力を非圧縮された形を音響出力の少なくとも一部の決定された位相シフトとの間の距離に基づき複数のピエゾドライバの特定のピエゾドライバに出力再生する複数のピエゾドライバとを含む、デバイス。 - マイクロフォンにより録音された音響の指向性は音響再生デバイスに取り付けられた音響メタ材料層を通して振動を起こすピエゾドライバにより再生される、請求項11に記載のデバイス。
- マイクロフォンおよび追加的マイクロフォンがバイノーラルまたはステレオで録音し、複数のピエゾドライバと追加的な複数のピエゾドライバによる再生により、マイクロフォンと追加的マイクロフォンとで音響の位置の検出が可能になり、複数のピエゾドライバと追加的なピエゾドライバにて三次元空間で聴覚的に決定する複数の共振器、マイクロフォン、複数のピエゾドライバの追加的、実質的に同一なセットを含む、請求項11に記載のデバイス。
- 複数のピエゾドライバがピエゾドライバの音響を増幅する単一の音響再生デバイスにそれぞれ取り付けられる、請求項11に記載のデバイス。
- ピエゾドライバの間隔が複数の共振器/離散的チャネルの間隔とは対応しない、請求項14に記載のデバイス。
- 複数の共振器が擬似ランダムに実質的に円形状に配列される、請求項11に記載のデバイス。
- 複数の共振器が円形配列内にて複数の等間隔にされた非共振材料により分岐される、請求項16に記載のデバイス。
- マイクロフォンはモノラルであり、記憶媒体は受信された音響を圧縮された形でデータの単一のチャネルにおいて保存する、請求項11に記載のデバイス。
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US15/801,942 | 2017-11-02 | ||
US15/801,942 US10304490B2 (en) | 2017-11-02 | 2017-11-02 | Acoustic holographic recording and reproduction system using meta material layers |
PCT/US2018/058616 WO2019089873A2 (en) | 2017-11-02 | 2018-11-01 | Acoustic holographic recording and reproduction system using meta material layers |
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