JP7112454B2 - 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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- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- H04B7/0834—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection based on external parameters, e.g. subscriber speed or location
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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- H04R29/007—Monitoring arrangements; Testing arrangements for public address systems
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- H—ELECTRICITY
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- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
- H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
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- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
- H04S7/303—Tracking of listener position or orientation
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04R2227/00—Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
- H04R2227/005—Audio distribution systems for home, i.e. multi-room use
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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 (17)
- 再生デバイスの音声出力を再生デバイスの向きに基づいて調整する方法であって、
再生デバイスが第1の特定の向きを有するとき、再生デバイスの少なくとも1つのスピーカーに、
音声データストリームの第1の周波数帯、及び
第1のイコライゼーション設定
のうちの1つを出力させるステップ、
再生デバイスが第2の特定の向きを有するとき、再生デバイスの少なくとも1つのスピーカーに、
音声データストリームの第2の周波数帯、及び
第2のイコライゼーション設定
のうちの1つを出力させるステップ、
を含み、
さらに、決定された第1または第2の向きおよび決定された再生デバイスの状態にさらに基づき、第1または第2の周波数帯またはイコライゼーション設定を選択するステップを含み、ここで、再生デバイスの状態は、
少なくとも1つの追加の再生デバイスとペアリングされた状態、
少なくとも1つの追加の再生デバイスとペアリングされていない状態、
少なくとも1つの追加の再生デバイスとグループ化された状態、及び
少なくとも1つの追加の再生デバイスとグループ化されていない状態
の何れかである
方法。 - 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音声を再生するようにペアリングされ、
さらに、
第1の再生デバイスの向きに少なくとも部分的に基づき、第2の再生デバイスによる音声出力を修正するステップを含む、請求項1に記載の方法。 - 第2の再生デバイスによる音声出力は、さらに、第2の再生デバイスの特定の向きに基づく、請求項2に記載の方法。
- さらに、
再生デバイスの向きを検知するように構成された少なくとも1つのセンサを使用して、再生デバイスの向きを決定するステップを含む、請求項1から3のいずれか1つに記載の方法。 - 少なくとも1つのセンサは、再生デバイスの向きを3軸で検知するように構成された加速度計である、請求項4に記載の方法。
- さらに、
再生デバイスの向きに対応するインジケーションに従って、コントローラへのユーザ入力から、再生デバイスの向きを決定するステップを含み、ここで、コントローラは、有線または無線ネットワークの少なくとも1つであるデータネットワークを介して再生デバイスと通信するように構成される、請求項1から3のいずれか1つに記載の方法。 - さらに、
再生デバイスの向きに対応するインジケーションに従って、再生デバイスにおける入力機構へのユーザ入力から、再生デバイスの向きを決定するステップを含む、請求項1から3のいずれか1つに記載の方法。 - 第1および第2の向きはともに、第1の回転軸および第2の回転軸に対して決定され、
第1の回転軸は再生デバイスの正面に平行であり、
第2の回転軸は再生デバイスの正面に垂直である、
請求項1から7のいずれか1つに記載の方法。 - さらに、
有線または無線ネットワークの少なくとも1つであるデータネットワークを介して再生デバイスと通信するように構成された第2のデバイスに対して、決定された再生デバイスの向きを提供するステップ、
決定された再生デバイスの向きに従って処理された音声ストリームを受信するステップ、
を含む、請求項4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の向きでは第1のイコライゼーション設定を出力し、および第2の向きでは第2のイコライゼーション設定を出力し、
再生デバイスが第1または第2の向きを有することを決定するステップは、再生デバイスが垂直または水平の向きにあるか否かを、互いに垂直な回転の3軸についての再生デバイスの回転に基づいて決定するステップを含む、
請求項4から9のいずれか1つに記載の方法。 - 再生デバイスは、第1の向きでは第1の周波数帯を出力し、および第2の向きでは第2の周波数帯を出力し、
第1の周波数帯は閾値周波数よりも高く、
第2の周波数帯は閾値周波数よりも低い、
請求項1から9のいずれか1つに記載の方法。 - 再生デバイスの状態は、少なくとも1つの追加の再生デバイスとの接続による変更可能な構成に応じて決定される、請求項1から11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、及び
請求項1から12のいずれか1つの方法を実行するように構成されたプロセッサ
を備える、
再生デバイス。 - さらに、互いに垂直な少なくとも2つの回転の軸について、再生デバイスの回転を決定するように構成された少なくとも1つの方向センサを備える、請求項13に記載の再生デバイス。
- 請求項13または14に記載の再生デバイスと、当該再生デバイスと同期して音声を再生するようにペアリングされた第2の再生デバイスとを備える、
システム。 - 請求項1から12のいずれか1つに記載の方法を1つ又は複数の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。
- 1つ又は複数のプロセッサにより実行されると請求項1から12のいずれか1つに記載の方法を再生デバイスに実行させる命令を記憶した、有形非一時的コンピュータ読み取り可能媒体。
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