JP2019103144A - 方向性音響センサ、方向性探知方法、及びそれを含む電子装置 - Google Patents
方向性音響センサ、方向性探知方法、及びそれを含む電子装置 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/04—Measuring characteristics of vibrations in solids by using direct conduction to the detector of vibrations which are transverse to direction of propagation
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- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/26—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using acoustic output
- B60K35/265—Voice
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- G06—COMPUTING; CALCULATING OR COUNTING
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- 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
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- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
- H04R1/245—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges of microphones
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- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
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- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
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- Otolaryngology (AREA)
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- Combustion & Propulsion (AREA)
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- Circuit For Audible Band Transducer (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
110_k,110_i_k 振動体
120 支持部
130,131 ケース
134 音響入力部
135,136 音響出力部
200 事物インターネット装置
300 自動車音声インターフェース装置
500 空間録音装置
600 全方向カメラ
SG_i サブグループ
Claims (24)
- 音響が入力される音響入力部と、
前記音響入力部を介して入力された音響が出力される音響出力部と、
前記音響入力部と前記音響出力部との間に、前記音響入力部に入力される音響の方向により、選択的に、1以上が反応するように配列された複数の振動体と、を含む方向性音響センサ。 - 前記複数の振動体は、同一平面上に配列され、前記音響入力部の中心と鉛直に対向する前記平面上の中心点を取り囲む形態に配列されることを特徴とする請求項1に記載の方向性音響センサ。
- 前記複数の振動体は、前記中心点に対して、所定対称性を有するように配列されることを特徴とする請求項2に記載の方向性音響センサ。
- 前記複数の振動体は、円形、楕円形または多角形の軌跡に沿って配列されたことを特徴とする請求項3に記載の方向性音響センサ。
- 前記音響出力部は、前記複数の振動体全体に対向するように形成されたことを特徴とする請求項1〜4のいずれか1項に記載の方向性音響センサ。
- 前記音響出力部は、前記複数の振動体それぞれと対向する複数個でもって具備されることを特徴とする請求項1〜5のいずれか1項に記載の方向性音響センサ。
- 前記複数の振動体は、同一共振周波数を有することを特徴とする請求項1〜6のいずれか1項に記載の方向性音響センサ。
- 前記複数の振動体は、互いに異なる共振周波数を有する複数の振動体を含むことを特徴とする請求項1〜6のいずれか1項に記載の方向性音響センサ。
- 前記複数の振動体は、それぞれが互いに異なる方向性を示す複数のサブグループにグルーピングされ、
前記複数のサブグループそれぞれに、互いに異なる共振周波数を有する複数の振動体が具備されることを特徴とする請求項8に記載の方向性音響センサ。 - 前記複数のサブグループ内の複数の振動体は、共振周波数の大きさ順に配列されることを特徴とする請求項9に記載の方向性音響センサ。
- 前記複数のサブグループのうち隣接するサブグループでの複数の振動体配列は、共振周波数サイズによる順序が互いに逆順であることを特徴とする請求項10に記載の方向性音響センサ。
- 前記複数の振動体配列の中心点に対して互いに対称に配置される振動体は、同じ共振周波数を有するように、前記複数のサブグループが配列されることを特徴とする請求項9に記載の方向性音響センサ。
- 入力される音響の方向により、選択的に、1以上が反応するように配列された複数の振動体を含む振動体アレイを準備する段階と、
前記振動体アレイにターゲット音響が入力されるとき、前記複数の振動体それぞれの出力を互いに比較し、前記ターゲット音響の音源分布プロファイルを推定する段階と、を含む、音響の方向性探知方法。 - 前記振動体アレイに対して、前記複数の振動体それぞれの出力から、入力される音響の方向を推定することができるマッチンググラフを設定する段階をさらに含み、
前記推定する段階は、
前記ターゲット音響に反応した1以上の振動体の振幅と、前記マッチンググラフとを比較し、前記ターゲット音響の方向性を判断することを特徴とする請求項13に記載の音響の方向性探知方法。 - 前記マッチンググラフを設定する段階は、
前記振動体アレイに含まれる任意の2つの振動体の振幅差と、入力される音響方向との関係を示す複数のマッチンググラフを設定することを特徴とする請求項14に記載の音響の方向性探知方法。 - ユーザが提供する音声信号を受信する、請求項1〜12のいずれか1項に記載の方向性音響センサと、
1以上のアプリケーションモジュールが保存されたメモリと、
前記アプリケーションモジュールを実行するプロセッサと、を含む事物インターネット装置。 - 回転自在であったり移動自在であったりする駆動機器と、
前記方向性音響センサで受信した信号を入力変数にして実行された前記アプリケーションモジュールの実行結果により、定められた方向に、前記駆動機器を回転または移動させる制御モジュールと、をさらに含むことを特徴とする請求項16に記載の事物インターネット装置。 - 前記駆動機器は、
前記アプリケーションモジュールの実行結果を出力する出力装置であることを特徴とする請求項17に記載の事物インターネット装置。 - 前記方向性音響センサで受信した信号が有効な入力信号であるか否かということを、方向性と連繋して学習する学習モジュールをさらに含むことを特徴とする請求項16〜18のいずれか1項に記載の事物インターネット装置。
- 請求項1〜12のいずれか1項に記載の方向性音響センサと、
前記方向性音響センサで受信した信号をその方向性によって有効な信号であるか否かということを判断し、有効な信号である場合、それを自動車制御モジュールに伝達する有効信号抽出モジュールと、を含む自動車音声インターフェース装置。 - 前記有効信号抽出モジュールは、
運転手の方向以外の方向性を有する音響信号をノイズとして除去し、前記自動車制御モジュールに伝達することを特徴とする請求項20に記載の自動車音声インターフェース装置。 - 請求項1〜12のいずれか1項に記載の方向性音響センサと、
前記方向性音響センサでセンシングした信号を分析し、前記方向性音響センサに入射された音響の方向性を判断するプロセッサと、
前記プロセッサの信号処理のためのプログラム、及び前記プロセッサの実行結果が保存されるメモリと、を含む空間録音装置。 - 多チャネルスピーカをさらに含み、
前記プロセッサは、前記メモリに保存されたオーディオ信号が方向性に合わせて再生されるように、前記多チャネルスピーカを制御することを特徴とする請求項22に記載の空間録音装置。 - 請求項1〜12のいずれか1項に記載の方向性音響センサと、
全方向撮影モジュールと、
前記方向性音響センサでセンシングする方向性音響信号と、前記全方向撮影モジュールで撮影する全方向映像信号とが整合するように、前記方向性音響センサと全方向撮影モジュールとを制御するプロセッサと、
前記方向性音響信号及び前記全方向映像信号を保存するメモリと、を含む全方向カメラ。
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