JP5221816B2 - 動的構成可能anrフィルタおよび信号処理トポロジー - Google Patents
動的構成可能anrフィルタおよび信号処理トポロジー Download PDFInfo
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- JP5221816B2 JP5221816B2 JP2012508577A JP2012508577A JP5221816B2 JP 5221816 B2 JP5221816 B2 JP 5221816B2 JP 2012508577 A JP2012508577 A JP 2012508577A JP 2012508577 A JP2012508577 A JP 2012508577A JP 5221816 B2 JP5221816 B2 JP 5221816B2
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- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/04—Recursive filters
- H03H2017/0477—Direct form I
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/04—Supports for telephone transmitters or receivers
- H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/03—Aspects of the reduction of energy consumption in hearing devices
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Function (AREA)
- Circuit For Audible Band Transducer (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Analogue/Digital Conversion (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
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Description
および第2の複数のフィルタ、ならびにDACの間の相互接続を構成するステップをさらに含むことができる。
を有するクロスオーバが形成されるよう、少なくとも第2および第3のデジタルフィルタが協同することになる係数を使用してこれらの第2および第3のデジタルフィルタを構成するステップが含まれており、第1のセットのANR設定によって規定されるANR設定を第2のセットのANR設定によって規定されるANR設定に変更するステップには、クロスオーバ周波数を変更するために、第2および第3のデジタルフィルタのフィルタ係数を構成するステップが含まれている。
よって規定されるANR設定に変更するようになされている。
フィードバックアンチノイズ音、フィードフォワードアンチノイズ音、およびパススルーオーディオのうちの1つまたは複数を音響的に出力する音響ドライバ190を駆動するのに十分な大きさに増幅される。
102 ヘッドバンド
112 キャビティ
115 イヤカップリング
117 通路
119 別のキャビティ
120 フィードバックマイクロフォン
125 アナログVGA
130 フィードフォワードマイクロフォン
135 アナログVGA
140 通信マイクロフォン
142 マイクロフォンブーム
145 アナログVGA
170 記憶デバイス
180 電源
190 音響ドライバ
200 フィードバックベースのANRの経路
210 アナログデジタル変換器(ADC)
220 VGA
230 加算ノード
240 VGA
250、350、450、520、550 フィルタバンク(フィルタブロック)
545a、545b プログラム可能電力スイッチ
551、657、659 転換可能デジタルフィルタ(転換可能フィルタ)
554 四次フィルタ
558 FIRフィルタ
620a、620b、620c バッファ
625 フィルタ設定
662a、662b、662x、667a、667b、667x 遅延エレメント
663a、663b、663c、663x、668a、668b、668x 重み付けエレメント
664 加算ノード
665a、665b、665c 電力導体
3500a フィルタトポロジー
Claims (8)
- 転換可能フィルタ(551)であって、
第1の遅延エレメント(662a)と、
前記第1の遅延エレメントに結合された第1の重み付けエレメント(663b)であって、前記転換可能フィルタが変換にゼロを導入することができるよう、前記第1の遅延エレメントと協同する第1の重み付けエレメント(663b)と、
前記第1の遅延エレメントおよび前記第1の重み付けエレメントに結合され、前記第1の遅延エレメントおよび前記第1の重み付けエレメントに電力を供給するための第1の電力導体(665a)と、
第2の遅延エレメント(667a)と、
前記第2の遅延エレメントに結合された第2の重み付けエレメント(668a)であって、前記転換可能フィルタが前記変換に極を導入することができるよう、前記第2の遅延エレメントと協同する第2の重み付けエレメント(668a)と、
前記第2の遅延エレメントおよび前記第2の重み付けエレメントに結合され、前記第2の遅延エレメントおよび前記第2の重み付けエレメントに電力を供給するための第2の電力導体(665b)であって、前記第2の電力導体を介して前記第2の遅延エレメントおよび前記第2の重み付けエレメントに電力を供給しないことによってディジタルフィルタをFIRフィルタとして動的に構成し、または、前記第2の電力導体を介して前記第2の遅延エレメントおよび前記第2の重み付けエレメントに電力を供給することによってディジタルフィルタをIIRフィルタとして動的に構成することができるよう、前記第2の遅延エレメントおよび前記第2の重み付けエレメントに電力を選択的に供給することができる第2の電力導体(665b)と
を備えた転換可能フィルタ。 - 前記第1の電力導体に結合された第3の遅延エレメント(662b)と、
前記第1の電力導体に結合され、かつ、前記第3の遅延エレメントに結合された第3の重み付けエレメント(663c)であって、前記転換可能フィルタが前記変換にもう1つのゼロを導入することができるよう、前記第3の遅延エレメントと協同する第3の重み付けエレメント(663c)と、
前記第2の電力導体に結合された第4の遅延エレメント(667b)と、
前記第2の電力導体に結合され、かつ、前記第4の遅延エレメントに結合された第4の重み付けエレメント(668b)であって、前記転換可能フィルタが前記変換にもう1つの極を導入することができるよう、また、前記第2の電力導体を介して前記第2および第4の遅延エレメントならびに前記第2および第4の重み付けエレメントに電力が供給されている場合には四次フィルタとして前記転換可能フィルタを動作させることができるよう、前記第4の遅延エレメントと協同する第4の重み付けエレメント(668b)と
をさらに備えた、請求項1に記載の転換可能フィルタ。 - 第3の遅延エレメント(662x)と、
前記第3の遅延エレメントに結合された第3の重み付けエレメント(663x)であって、前記転換可能フィルタが前記変換にもう1つのゼロを導入することができるよう、前記第3の遅延エレメントと協同する第3の重み付けエレメント(663x)と、
前記第3の遅延エレメントおよび前記第3の重み付けエレメントに結合された、前記第3の遅延エレメントおよび前記第3の重み付けエレメントに電力を供給するための第3の電力導体(665c)であって、前記第3の電力導体を介して前記第3の遅延エレメントおよび前記第3の重み付けエレメントに電力が供給されない場合のより低い次数のフィルタ、または前記第3の電力導体を介して前記第3の遅延エレメントおよび前記第3の重み付けエレメントに電力が供給される場合のより高い次数のフィルタのいずれかとして前記ディジタルフィルタを動的に構成することができるよう、前記第3の遅延エレメントおよび前記第3の重み付けエレメントに電力を選択的に供給することができる第3の電力導体と
をさらに備えた、請求項1に記載の転換可能フィルタ。 - 前記第3の電力導体に結合された第4の遅延エレメントと、
前記第3の電力導体に結合され、かつ、前記第4の遅延エレメントに結合された第4の重み付けエレメントであって、前記第3の電力導体を介して前記第4の遅延エレメントおよび第4の重み付けエレメントに電力が供給されない場合のより低い次数のフィルタ、または前記第3の電力導体を介して前記第4の遅延エレメントおよび前記第4の重み付けエレメントに電力が供給される場合のより高い次数のフィルタのいずれかとして前記ディジタルフィルタを動的に構成することができるよう、前記第4の遅延エレメントと協同する第4の重み付けエレメントと
をさらに備えた、請求項3に記載の転換可能フィルタ。 - ANRをパーソナルANRデバイスのイヤピースの中に提供するための動的構成可能ANR回路を動作させる方法であって、
第1のセットのANR設定によって規定される量の複数のディジタルフィルタを、前記ANRの準備に関連するディジタルデータが通って前記ANR回路内を流れる通路に沿って配置されたフィルタブロックの中に組み込むステップと、
個々の前記ディジタルフィルタの間の相互接続を構成することによって、前記第1のセットのANR設定によって規定されるフィルタブロックトポロジーを前記フィルタブロック内に採択するステップと、
第1のセットのANR設定によって規定されるディジタルフィルタのタイプを、前記ANR回路によってサポートされるディジタルフィルタの複数のタイプの中からディジタルフィルタ毎に選択するステップと、
個々のディジタルフィルタをディジタルフィルタ毎に規定されるタイプのディジタルフィルタとして動作させることができるように構成するために、個々のディジタルフィルタの電力導体を構成するステップと
を含む方法。 - 前記第1のセットのANR設定によって規定されるフィルタ係数を使用して前記ディジタルフィルタの各々を構成するステップと、
ディジタルデータが前記第1のANR設定によって規定される複数の前記ディジタルフィルタのうちの少なくとも1つを通って流れるデータ転送速度を設定するステップと
をさらに含む、請求項5に記載の方法。 - 前記ANR回路をイネーブルして前記イヤピースの中にANRを提供するために前記フィルタブロックを動作させるステップと、
前記第1のセットのANR設定によって規定されるANR設定を、前記通路の少なくとも一部を介したディジタルデータの転送と同期して、第2のセットのANR設定によって規定されるANR設定に変更するステップと
をさらに含む、請求項6に記載の方法。 - 前記第1のセットのANR設定によって規定されるANR設定を前記第2のセットのANR設定によって規定されるANR設定に変更するステップが、
前記第1のANR設定によって規定される前記フィルタブロックトポロジーの相互接続を変更するステップと、
複数の前記ディジタルフィルタのうちの1つに対する前記第1のセットのANR設定によって規定されるディジタルフィルタのタイプの選択を変更するステップであって、ディジタルフィルタのタイプの選択を変更するステップが、前記複数のディジタルフィルタのうちの1つのディジタルフィルタの電力導体を構成するステップであって、そのディジタルフィルタのための電力導体が既に構成されているその前のタイプのディジタルフィルタとは異なるタイプのディジタルフィルタとして動作させることができるようにそのディジタルフィルタを構成するステップを含むステップと、
前記複数のディジタルフィルタの前記第1のANR設定によって規定されるディジタルフィルタの量を変更するステップと、
前記第1のANR設定によって規定されるフィルタ係数を変更するステップと、
前記第1のANR設定によって規定されるデータ転送速度を変更するステップ
のうちの少なくとも1つを含む、請求項7に記載の方法。
Applications Claiming Priority (9)
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US12/430,994 US8073151B2 (en) | 2009-04-28 | 2009-04-28 | Dynamically configurable ANR filter block topology |
US12/430,984 | 2009-04-28 | ||
US12/430,990 | 2009-04-28 | ||
US12/430,984 US8184822B2 (en) | 2009-04-28 | 2009-04-28 | ANR signal processing topology |
US12/430,994 | 2009-04-28 | ||
US12/430,990 US8073150B2 (en) | 2009-04-28 | 2009-04-28 | Dynamically configurable ANR signal processing topology |
US12/750,832 US8090114B2 (en) | 2009-04-28 | 2010-03-31 | Convertible filter |
US12/750,832 | 2010-03-31 | ||
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2010
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EP2549774B1 (en) | 2020-09-02 |
EP2574078A3 (en) | 2015-02-18 |
EP2549775A2 (en) | 2013-01-23 |
KR101511409B1 (ko) | 2015-04-10 |
EP2574078A2 (en) | 2013-03-27 |
KR20120014912A (ko) | 2012-02-20 |
EP2549774A3 (en) | 2015-02-18 |
EP2809084B1 (en) | 2022-03-09 |
CN102461204B (zh) | 2015-10-14 |
EP2425635A1 (en) | 2012-03-07 |
WO2010129241A1 (en) | 2010-11-11 |
EP2425635B1 (en) | 2013-08-14 |
EP2809084A2 (en) | 2014-12-03 |
EP2549775B1 (en) | 2020-09-02 |
EP2574078B1 (en) | 2018-01-24 |
EP2809084A3 (en) | 2015-02-18 |
CN102461204A (zh) | 2012-05-16 |
EP2549774A2 (en) | 2013-01-23 |
JP2012525779A (ja) | 2012-10-22 |
EP2549775A3 (en) | 2015-02-18 |
HK1166907A1 (zh) | 2012-11-09 |
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