JP6466513B2 - スピーカーの配置方向に応じた音声の整形 - Google Patents
スピーカーの配置方向に応じた音声の整形 Download PDFInfo
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Description
本明細書に記載の例示的な実施形態は、スピーカーの配置方向に応じて音声を整形することに関する。本実施形態は、様々な方法で配置される再生デバイスに特に有用である。本実施形態は、例えば、スピーカーの配置方向付けの柔軟性やその配置方向に基づく最適な音声が求められる、あらゆる環境およびシステムに関連した利用性を見出すことができる。
図面の全体を通して同様のパーツに対しては、同様の符号を用いる。図1は、例示的なシステム構成100を示し、このシステム構成100において、本明細書に記載のいくつかの実施形態が実施される。システム構成100が、複数のゾーンを有する家庭に用いられた場合を、例示的に示す。それぞれのゾーンは例えば、オフィス、浴室、寝室、キッチン、ダイニングルーム、ファミリールーム、ホームシアタールーム、ユーティリティ又はランドリールーム、パティオなどの異なる部屋又はスペースを表す。ここには示されていないが、1つのゾーンが複数の部屋やスペースを占めるものであっても良い。各ゾーンに1つ以上のゾーンプレーヤー102〜124が示されている。ゾーンプレーヤー102〜124は、再生デバイス(plAyBAck device)、マルチメディアユニット、スピーカーなどで構成され、それぞれ、オーディオ、ビデオ、および/又はオーディオビジュアルの出力を行う。コントローラ130(ここでは例示的にキッチンに設けられている)は、システム構成100の制御を行う。システム構成100は、例示的なハウスオーディオシステム全体を表すが、本明細書に記載の技術は、これらの特定の場所への用途に限定されず、又はウスオーディオシステム全体のような広範囲のシステムにも限定されない。
図4を参照すると、一実施形態に係るゾーンプレーヤー400の例示的な機能ブロック図が示されている。ゾーンプレーヤー400は、ネットワークインタフェース402、プロセッサ408、メモリ410、オーディオ処理コンポーネント412、モジュール414 、オーディオアンプ416およびオーディオアンプ416に接続されたスピーカーユニット418を含む。図2Aは、このようなゾーンプレーヤーの正面側の図の例を示す。ゾーンプレーヤーの他の種類は、スピーカーユニット418(例えば、図2B)又はオーディオアンプ416(例えば、図2C)を含まなくてもよい。また、ゾーンプレーヤー400は、別のコンポーネントに統合されてもよい。例えば、ゾーンプレーヤー400は、屋内又は屋外の使用のためのランプの一部として構成することができる。
図5を参照すると、図1の制御デバイス130に対応し得る例示的なコントローラ500が示されている。コントローラ500は、システム内のマルチメディアアプリケーションの制御、自動化およびその他のことを促進するために使用することができる。特に、コントローラ500は、ネットワーク上にて利用可能な複数のオーディオソースの中からの選択を容易にするとともに、無線ネットワークインタフェース508を介した1つ以上のゾーンプレーヤー(例えば、図1のゾーンプレーヤー102―124)の制御を可能にするように構成されている。一実施形態によれば、無線通信は、業界標準に基づいている(例えば、赤外線、ラジオ、あるいは無線規格のIEEE802.11a、802.11b、802.11g、802.11n又は802.15)。さらに、特定のオーディオがコントローラ500を介してアクセスされている、又はゾーンプレーヤーを経由して再生されている場合、オーディオソースに関連付けられている画像(例えば、アルバムアート)又は他のデータが、あるゾーンプレーヤー又は他の電子機器から、表示のためにコントローラ500へ送信されてもよい。
いくつかの実施形態では、オーディオデータストリームが、1つ以上のスピーカードライバを有する再生デバイスによって取得され(又は、再生デバイスが1つ以上のスピーカードライバに接続され、又は再生デバイスが1つ以上のスピーカードライバを含むとともに1つ以上のスピーカードライバに接続され)、再生デバイスの配置方向、特にスピーカーの配置が決定されるとともに、その配置方向に基づいて再生デバイスによって音が再生される。
いくつかの実施形態において、再生デバイスに配置される配置方向センサを用いて、検知された再生デバイスの配置方向に基づく異なるイコライーション(EQ)設定を行う。例えば、再生デバイスは、垂直配置方向、水平配置方向、又は別の角度配置方向を有する場合がある。再生デバイスは、例えば、完全に平らに置かれないことがあり、その代わりに水平配置方向又は垂直配置方向として扱われるべきわずかな角度にて配置される場合がある。水平配置方向と垂直配置方向はそれぞれ、再生デバイスの出力用EQ設定のための異なる基準に関連している。
ここで、Gは重力ベクトルを表し、X、YおよびZは3つの軸を表す。すなわち、3つの軸のうちの任意のサンプルにおいて、結果的に得られる重力ベクトルは単一のGと等しくなる。式1を適用することで、オフセットのベクトルを低減又は削除することができる。
[-sin(φ) cos(φ) 0]
[0 0 1]
C= [1 0 0]
[0 cos(θ) sin(θ)]
[0 -sin(θ) cos(θ)]
C*D= [cos(φ) sin(φ) 0]
[-cos(θ)sin(φ) cos(θ)cos(φ) sin(θ)]
[sin(θ)sin(φ) -sin(θ)cos(φ) cos(θ)]
いくつかの実施形態では、1つ以上の再生デバイスが分散ネットワークにて動作することで、1つ以上の同期グループによる1つ以上の交換可能なマスタ−スレーブ関係を促進する。分散型のネットワーク、通信および制御モデルを用いることで、再生デバイスがリスナーにコンテンツを出力しない場合でも、その再生デバイスはそのコンテンツを別の再生デバイスに提供することができる。さらに、再生デバイスは、ある時点ではマスタデバイス又はマスタ制御として機能するとともに、別の時点ではマスタデバイスとして機能する他のデバイスから命令(例えば、コンテンツおよび/又は同期化)を受信してもよい。
本明細書に記載の例示的な実施形態は、スピーカーの配置方向に基づいて、ある環境における音声を整形する多数の方法を提供する。例えば、周波数やチャネルを特定のスピーカードライバにルーティングすることにより、音声を整形することができる。別の例では、ゾーンプレーヤーが1つ以上の付加的なゾーンプレーヤーとペアリングされ、グループ化され又は統合されているかどうかなどの他の状態を考慮することによって、音声をさらに整形することができる。さらに別の例では、ゾーンプレーヤーの集合による全体的な環境における音声を、その集合における1つ以上のゾーンプレーヤーの配置方向に基づいて整形することができる。例示的な実施形態による技術は、電動式の車両、ボート、飛行機および屋外など、音声の正確な再現が望まれる任意の場所において使用可能である。
Claims (16)
- 再生デバイスの向きに基づいて再生デバイスによる音声出力を調整する方法であって、
再生デバイスが、少なくとも第1の回転軸および第2の回転軸に対する第1の向きを有していることを決定するステップ、ここで、第1の回転軸は第2の回転軸に直交するものである、
第1の向きに基づいて、再生デバイスにおける複数のスピーカーのうちの少なくとも1つのスピーカーに、オーディオデータストリームの第1の周波数帯あるいは第1のイコライゼーション設定のいずれかを出力させるステップ、
再生デバイスが、少なくとも第1の回転軸および第2の回転軸に対する第2の向きを有していることを決定するステップ、
第2の向きに基づいて、再生デバイスにおける複数のスピーカーのうちの少なくとも1つのスピーカーに、オーディオデータストリームの第2の周波数帯あるいは第2のイコライゼーション設定のいずれかを出力させるステップ、
を含み、
再生デバイスは第1の再生デバイスであり、第2の再生デバイスと同期してオーディオを再生するように第2の再生デバイスとペアリングされており、
少なくとも部分的に第1の再生デバイスの向きに基づいて、第2の再生デバイスによるオーディオ出力を修正するステップ、
をさらに含む、方法。 - 第2の再生デバイスによるオーディオ出力はさらに、第2の再生デバイスの向きに基づくものである、請求項1に記載の方法。
- 再生デバイスの向きは、再生デバイスの向きを検知する少なくとも1つのセンサによって決定される、請求項1又は2に記載の方法。
- 少なくとも1つのセンサは、3つの軸に対する再生デバイスの向きを検知する加速度計である、請求項3に記載の方法。
- 再生デバイスの向きは、コントローラ(300、500)へのユーザ入力による、再生デバイス(400)の向きに対応するインジケーションに基づいて決定され、ここで、コントローラ(300、500)は、有線ネットワークおよび無線ネットワークのうちの少なくとも1つであるデータネットワーク(128)を介して再生デバイス(400)と通信する、請求項1又は2に記載の方法。
- 再生デバイスの向きは、再生デバイス(400)上の入力メカニズムへのユーザ入力による、再生デバイス(400)の向きに対応するインジケーションに基づいて決定される、請求項1又は2に記載の方法。
- 第1の軸は、再生デバイスの前面に平行であり、第2の軸は、再生デバイスの前面に垂直である、請求項1から6のいずれか1つに記載の方法。
- 決定された再生デバイスの向きを、有線ネットワークおよび無線ネットワークのうちの少なくとも1つであるデータネットワーク(128)を介して再生デバイス(400)と通信する第2のデバイスへ提供するステップ、
決定された再生デバイスの向きに基づいて処理されたオーディオストリームを受信するステップ、
をさらに含む、請求項1から7のいずれか1つに記載の方法。 - 再生デバイスは、第1の向きおよび第2の向きのときに第1のイコライゼーション設定および第2のイコライゼーション設定をそれぞれ出力し、
再生デバイスが第1の向き又は第2の向きを有することを決定するステップは、互いに直交する3つの回転軸に対する再生デバイスの向きに基づいて、再生デバイスが鉛直の向き又は水平の向きにあることを決定するステップを含む、請求項1から8のいずれか1つに記載の方法。 - 再生デバイスは、第1の向きおよび第2の向きのときに第1の周波数帯および第2の周波数帯をそれぞれ出力し、
第1の周波数帯は、閾値周波数よりも高い周波数であり、第2の周波数帯は、当該閾値周波数よりも低い周波数である、請求項1から8のいずれか1つに記載の方法。 - 決定された第1の向き又は第2の向きと、決定された再生デバイスの状態とに基づいて、第1の周波数帯、第2の周波数帯、第1のイコライゼーション設定、第2のイコライゼーション設定のいずれかを選択するステップ、
をさらに含み、
再生デバイスの状態は、以下のうちのいずれかである、
少なくとも1つの付加的再生デバイスとのペアリング状態、少なくとも1つの付加的再生デバイスとの非ペアリング状態、少なくとも1つの付加的再生デバイスとのグループ化状態、少なくとも1つの付加的再生デバイスとの非グループ化状態、
請求項1から10のいずれか1つに記載の方法。 - ネットワークインタフェース、
複数のスピーカードライバ、
請求項1から11のいずれか1つに記載の方法を実行するプロセッサ、
を備える、再生デバイス。 - 互いに直交する少なくとも2つの回転軸に対する再生デバイスの回転位置を決定する少なくとも1つの配向センサをさらに備える、請求項12に記載の再生デバイス。
- 請求項12又は13に記載の第1の再生デバイス、
第1の再生デバイスと同期してオーディオを再生するように第1の再生デバイスとペアリングされた第2の再生デバイス、
を備える、システム。 - 請求項1から11のいずれか1つに記載の方法をプロセッサに実行させるためのコンピュータプログラム。
- プロセッサによって実行可能な命令を記憶したコンピュータ読み取り可能媒体であって、当該命令はプロセッサによって実行されたときに、請求項1から11のいずれか1つに記載の方法を実行させる、コンピュータ読み取り可能媒体。
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