JP2021108438A - 楽音信号の増幅器 - Google Patents
楽音信号の増幅器 Download PDFInfo
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- JP2021108438A JP2021108438A JP2019239930A JP2019239930A JP2021108438A JP 2021108438 A JP2021108438 A JP 2021108438A JP 2019239930 A JP2019239930 A JP 2019239930A JP 2019239930 A JP2019239930 A JP 2019239930A JP 2021108438 A JP2021108438 A JP 2021108438A
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- 230000001939 inductive effect Effects 0.000 claims description 13
- 238000013016 damping Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 description 16
- 230000000630 rising effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
- H03K5/1532—Peak detectors
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
- G10H3/18—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar
- G10H3/186—Means for processing the signal picked up from the strings
- G10H3/187—Means for processing the signal picked up from the strings for distorting the signal, e.g. to simulate tube amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0091—Means for obtaining special acoustic effects
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
- G10H3/18—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar
- G10H3/186—Means for processing the signal picked up from the strings
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3264—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits in audio amplifiers
- H03F1/327—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits in audio amplifiers to emulate discharge tube amplifier characteristics
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/21—Bias resistors are added at the input of an amplifier
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/42—Indexing scheme relating to amplifiers the input to the amplifier being made by capacitive coupling means
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/549—Indexing scheme relating to amplifiers the amplifier comprising means to emulate the vacuum tube behaviour
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45151—At least one resistor being added at the input of a dif amp
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45202—Indexing scheme relating to differential amplifiers the differential amplifier contains only resistors in the load
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45528—Indexing scheme relating to differential amplifiers the FBC comprising one or more passive resistors and being coupled between the LC and the IC
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45636—Indexing scheme relating to differential amplifiers the LC comprising clamping means, e.g. diodes
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45638—Indexing scheme relating to differential amplifiers the LC comprising one or more coils
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45654—Indexing scheme relating to differential amplifiers the LC comprising one or more extra diodes not belonging to mirrors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45671—Indexing scheme relating to differential amplifiers the LC comprising one or more diodes as level shifter
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45698—Indexing scheme relating to differential amplifiers the LC comprising one or more resistors coupled to the LC by feedback (active or passive)
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45701—Indexing scheme relating to differential amplifiers the LC comprising one resistor
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45712—Indexing scheme relating to differential amplifiers the LC comprising a capacitor as shunt
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45714—Indexing scheme relating to differential amplifiers the LC comprising a coil as shunt
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45716—Indexing scheme relating to differential amplifiers the LC comprising a RC-series circuit as shunt, e.g. for stabilisation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Power Engineering (AREA)
- Nonlinear Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
Description
楽音信号の入力端子と、
前記電源を用いて前記楽音信号を増幅する増幅回路と、
前記増幅回路の出力端に接続され、前記電源の電圧値を超える波形を出力する跳ね上げ回路と、
を含む増幅器である。
(1)波形の立ち上がり及び立下り時に、特に大きく跳ね上がる(オーバーシュートを生じる)。
(2)跳ね上がりのピーク電圧値(波高値)は、電源電圧よりも大きな値となる。
図6の上から2段目、及び図7は、跳ね上げ回路20を採用した場合における、図1中の観測点(3)の波形、すなわち、跳ね上げ回路20の出力波形を示す。
るためである。
ンダーシュートやその後の第2ピーク以降のピークが発生し、波打ちながら減衰する状態となっている。このように、図5に示したような、真空管アンプの波形の特徴、、波形の立上がリ時及び立下り時に特に大きく跳ね上がる(跳ね下がる)波形とならない。
により、コイルL1とコンデンサC1の共振、及びコイルL1とコンデンサC2の共振が抑
制されている。
の共振が支配的な影響を与える。この間、ダンピング抵抗R3を介してコンデンサC2に遅れて電荷がチャージされる。
第1ピークのアンダーシュートやその後の第2ピーク以降のピークを誘発する。しかし、コンデンサC2に電荷が遅れてチャージされていることにより、抵抗R3とコンデンサC2によって構成される積分回路により、コイルL1とコンデンサC1とによる共振により
誘発される第1ピークのアンダーシュートやその後の第2ピーク以降のピークの発生が抑
制される。
10・・・増幅回路
20、20A、20B・・・跳ね上げ回路
30・・・スピーカ負荷
楽音信号の入力端子と、
前記電源を用いて前記楽音信号を増幅する増幅回路と、
前記増幅回路の出力端に接続され、前記電源の電圧値を超える波形を出力する回路と、を含む増幅器である。回路は、例えば跳ね上げ回路である。
(1)波形の立ち上がり及び立下り時に、特に大きく跳ね上がる(オーバーシュートを生じる)。
(2)跳ね上がりのピーク電圧値(波高値)は、電源電圧よりも大きな値となる。
ンダーシュートやその後の第2ピーク以降のピークが発生し、波打ちながら減衰する状態となっている。このように、図5に示したような、真空管アンプの波形の特徴である、波形の立上がリ時及び立下り時に特に大きく跳ね上がる(跳ね下がる)波形とならない。
Claims (6)
- 電源と、
楽音信号の入力端子と、
前記電源を用いて前記楽音信号を増幅する増幅回路と、
前記増幅回路の出力端に接続され、前記電源の電圧値を超える波形を出力する跳ね上げ回路と、
を含む増幅器。 - 前記跳ね上げ回路の出力端がスピーカ負荷に直列接続されている
請求項1に記載の増幅器。 - 前記跳ね上げ回路は、前記跳ね上げ回路の出力波形を制御する跳ね上げ制御回路を含む請求項1又は2に記載の増幅器。
- 前記跳ね上げ回路は、誘導性負荷と容量性負荷とから構成される共振回路である
請求項1から3のいずれか一項に記載の増幅器。 - 前記跳ね上げ回路は、誘導性負荷と、容量性負荷と、前記誘導性負荷と前記容量性負荷との間に接続された整流素子とを含む共振回路である
請求項1から3のいずれか一項に記載の増幅器。 - 前記跳ね上げ回路は、誘導性負荷と、第1の容量性負荷と、ダンピング要素を含む第2の容量性負荷と、前記誘導性負荷と前記第1の容量性負荷との間に接続された整流素子とを含む共振回路である
請求項1から3のいずれか一項に記載の増幅器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019239930A JP7411411B2 (ja) | 2019-12-27 | 2019-12-27 | 楽音信号の増幅器 |
EP20213993.7A EP3843266B1 (en) | 2019-12-27 | 2020-12-15 | Amplifier for music signal and method of outputting waveform of music signal |
CN202011493592.7A CN113131907A (zh) | 2019-12-27 | 2020-12-17 | 乐音信号的扩大器以及乐音信号的波形的输出方法 |
US17/129,936 US11670272B2 (en) | 2019-12-27 | 2020-12-22 | Amplifier for music signal and method of outputting waveform of music signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019239930A JP7411411B2 (ja) | 2019-12-27 | 2019-12-27 | 楽音信号の増幅器 |
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JP2021108438A true JP2021108438A (ja) | 2021-07-29 |
JP7411411B2 JP7411411B2 (ja) | 2024-01-11 |
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JP2019239930A Active JP7411411B2 (ja) | 2019-12-27 | 2019-12-27 | 楽音信号の増幅器 |
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US (1) | US11670272B2 (ja) |
EP (1) | EP3843266B1 (ja) |
JP (1) | JP7411411B2 (ja) |
CN (1) | CN113131907A (ja) |
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JP7411411B2 (ja) * | 2019-12-27 | 2024-01-11 | ローランド株式会社 | 楽音信号の増幅器 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01502873A (ja) * | 1987-03-23 | 1989-09-28 | プリッチャード エリック ケー | 真空管増幅器相当の半導体装置 |
JP2003264435A (ja) * | 2002-03-06 | 2003-09-19 | Yamaha Corp | D級増幅器 |
JP2007135177A (ja) * | 2005-03-18 | 2007-05-31 | Yamaha Corp | D級増幅器 |
US20130033318A1 (en) * | 2011-08-01 | 2013-02-07 | Samsung Electronics Co., Ltd. | Switching amplifier and audio device |
US20130136278A1 (en) * | 2011-11-29 | 2013-05-30 | Quilter Labs, LLC | Guitar amplifier |
JP2016111430A (ja) * | 2014-12-03 | 2016-06-20 | ローム株式会社 | Pwm変調装置および音声信号出力装置 |
JP2016171559A (ja) * | 2015-03-13 | 2016-09-23 | ヤマハ株式会社 | 電力増幅器 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3648188A (en) * | 1970-06-10 | 1972-03-07 | Bendix Corp | Transistor power amplifier |
JPS5951167B2 (ja) | 1976-05-13 | 1984-12-12 | ソニー株式会社 | 利得制御回路 |
JPS5951167A (ja) | 1982-09-16 | 1984-03-24 | Tokyo Keiki Co Ltd | 液圧作動モ−タ |
US4936185A (en) * | 1986-12-25 | 1990-06-26 | Yamaha Corporation | Electronic musical instrument having plural component blocks |
JP3336089B2 (ja) | 1993-09-16 | 2002-10-21 | ローランド株式会社 | 信号処理装置 |
JPH1155041A (ja) * | 1997-08-06 | 1999-02-26 | Roland Corp | 電力増幅器 |
WO2000046982A1 (fr) * | 1999-02-04 | 2000-08-10 | Matsushita Electric Industrial Co., Ltd. | Circuit d'alimentation |
DE19953119C2 (de) | 1999-11-04 | 2003-03-20 | Harman Audio Electronic Sys | Audioverstärker mit einer getakteten Endstufe |
JP3928515B2 (ja) * | 2002-07-31 | 2007-06-13 | ヤマハ株式会社 | D級増幅器 |
JP3922129B2 (ja) * | 2002-08-02 | 2007-05-30 | ヤマハ株式会社 | D級増幅器 |
JP2004128599A (ja) * | 2002-09-30 | 2004-04-22 | Ricoh Co Ltd | 演算増幅器及び当該演算増幅器を用いたスピーカアンプ |
US8428271B1 (en) * | 2009-03-20 | 2013-04-23 | Charles Michael Luke | Balanced distortion for musical instrument |
JP5710870B2 (ja) * | 2009-09-28 | 2015-04-30 | ローランド株式会社 | Dc−dcコンバータ |
US10158327B2 (en) * | 2016-10-28 | 2018-12-18 | Qualcomm Incorporated | Low impedance adaptive bias scheme for power amplifier |
US10439439B2 (en) * | 2017-02-13 | 2019-10-08 | STMicroelectronics (Grand Ouest) SAS | Method and device for the contactless energy transfer to an apparatus equipped with a loudspeaker |
JP7101590B2 (ja) * | 2018-10-18 | 2022-07-15 | エイブリック株式会社 | スイッチングレギュレータ |
US11164551B2 (en) * | 2019-02-28 | 2021-11-02 | Clifford W. Chase | Amplifier matching in a digital amplifier modeling system |
JP7411411B2 (ja) * | 2019-12-27 | 2024-01-11 | ローランド株式会社 | 楽音信号の増幅器 |
-
2019
- 2019-12-27 JP JP2019239930A patent/JP7411411B2/ja active Active
-
2020
- 2020-12-15 EP EP20213993.7A patent/EP3843266B1/en active Active
- 2020-12-17 CN CN202011493592.7A patent/CN113131907A/zh active Pending
- 2020-12-22 US US17/129,936 patent/US11670272B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01502873A (ja) * | 1987-03-23 | 1989-09-28 | プリッチャード エリック ケー | 真空管増幅器相当の半導体装置 |
JP2003264435A (ja) * | 2002-03-06 | 2003-09-19 | Yamaha Corp | D級増幅器 |
JP2007135177A (ja) * | 2005-03-18 | 2007-05-31 | Yamaha Corp | D級増幅器 |
US20130033318A1 (en) * | 2011-08-01 | 2013-02-07 | Samsung Electronics Co., Ltd. | Switching amplifier and audio device |
US20130136278A1 (en) * | 2011-11-29 | 2013-05-30 | Quilter Labs, LLC | Guitar amplifier |
JP2016111430A (ja) * | 2014-12-03 | 2016-06-20 | ローム株式会社 | Pwm変調装置および音声信号出力装置 |
JP2016171559A (ja) * | 2015-03-13 | 2016-09-23 | ヤマハ株式会社 | 電力増幅器 |
Also Published As
Publication number | Publication date |
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CN113131907A (zh) | 2021-07-16 |
JP7411411B2 (ja) | 2024-01-11 |
US20210201879A1 (en) | 2021-07-01 |
US11670272B2 (en) | 2023-06-06 |
EP3843266B1 (en) | 2022-06-08 |
EP3843266A1 (en) | 2021-06-30 |
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