JP2017129690A - 回路および楽器 - Google Patents
回路および楽器 Download PDFInfo
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- JP2017129690A JP2017129690A JP2016008374A JP2016008374A JP2017129690A JP 2017129690 A JP2017129690 A JP 2017129690A JP 2016008374 A JP2016008374 A JP 2016008374A JP 2016008374 A JP2016008374 A JP 2016008374A JP 2017129690 A JP2017129690 A JP 2017129690A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/004—Error avoidance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- 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
- G10H1/32—Constructional details
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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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
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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
- H03F3/183—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/187—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
-
- 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
- G10H1/46—Volume control
-
- 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
- G10H2230/00—General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
- G10H2230/025—Computing or signal processing architecture features
- G10H2230/035—Power management, i.e. specific power supply solutions for electrophonic musical instruments, e.g. auto power shut-off, energy saving designs, power conditioning, connector design, avoiding inconvenient wiring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/511—Many discrete supply voltages or currents or voltage levels can be chosen by a control signal in an IC-block amplifier circuit
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
【解決手段】処理部200はDSP203への給電経路である経路R1と、アンプ204への給電経路である経路R2とを有し、経路R2に定電流回路部205を備える。アンプ204の消費電力が変動したとしても、定電流回路部205により経路R2に流れる電流は制限されるため、電圧V1が低下することが抑制される。電圧V1は所定電圧以上となるため、アンプ204の消費電力の変動にかかわらず、DC−DCコンバータ202からDSP203へ安定して電圧V2が給電される。このため、DSP203における電源電圧低下に伴うシャットダウンが抑制され、トランスデューサ30からの放音が一定期間停止してしまうことが抑制される。
【選択図】図1
Description
電源部201は2個の電池201aが直列接続された構成である。例えば電池201aが新しいアルカリ乾電池である場合、電源部201は電池の公称電圧である3V(1.5V×2)程度の電圧V1を出力すると期待できる。しかし、例えば電池201aの使用時間が長くなると、電池電圧は低下する。ここで、処理部200の動作が安定した楽器1を提供するには、電池201aの電池電圧が終止電圧の2V(1V×2)付近となり、電圧V1が略2Vである場合においても処理部200が動作することが要求される。図2に示す電圧特性PVaおよび電力特性PPaは開放電圧が略2Vの電池201aにおける特性を示している。電力特性PPaに示す様に、最大電力は略0.8Wである。つまり、電源部201は略0.8Wを超える電力を必要とする負荷は駆動できない。尚、以降の説明で、電池電圧が終止電圧付近まで低下した電池201aのことをワーストケースの電池201aと称する。
経路R1から分岐する経路R2は定電流回路部205を備える。これにより、アンプ204における消費電力が変動した場合においても、電池201aからアンプ204への電力は制限されるため、電池201aから引き出される電流は制限される。定電流回路部205により、電池201aから引き出される電流は制限されるため、電池201aの電池電圧の低下が抑制される。このため、DSP203の電源電圧となる電圧V2が低下してDSP203の動作が不安定になることが抑制される。アンプ204の消費電力が増加して定電流回路部205により電池201aから供給される電力が制限された場合においても、コンデンサ207が不足分を補助するため、所望の電力の信号S3を得ることができる。消費電力の変動の大きなアンプ204と、消費電力の変動の少ないDSP203とを共通の、電池201aで構成される電源部201で安定して駆動することができる。
アンプ204における消費電力が変動した場合においても、電池201aからアンプ204への電力は抵抗213により制限されるため、電池201aから引き出される電流は制限される。これにより、電池201aの電圧V1の低下・変動が抑制される。このため、DSP203の電源電圧となる電圧V6が低下してDSP203の動作が不安定になることが抑制される。アンプ204の消費電力が増加した場合においても、コンデンサ214が不足分を補助するため、所望の電力の信号S5を得ることができる。消費電力の変動の大きなアンプ204と、消費電力の変動の少ないDSP203とを共通の、電池201aで構成される電源部201で安定して駆動することができる。
例えば、楽器1はトランスデューサ30を備え、楽器2はスピーカ40を備えると説明したが、これに限定されず、楽器1はトランスデューサ30に替えてスピーカを備える構成、楽器2はスピーカ40に替えてトランスデューサを備える構成としても良い。
10 変換部
30 トランスデューサ
40 スピーカ
200、210 処理部
201 電源部
201a 電池
203 DSP
204 アンプ
205 定電流回路部
207 コンデンサ
213 抵抗
R1、R2、R3、R4 経路
Claims (5)
- 信号処理を行う信号処理手段と、
前記信号処理手段から出力される信号を増幅する増幅手段と、
バッテリから前記信号処理手段への第1給電経路と、
前記第1給電経路から分岐する前記増幅手段への第2給電経路と、
前記第2給電経路に介在し、前記第2給電経路を流れる電力を制限する電力制限手段と、
前記第2給電経路に接続され、前記増幅手段へ給電する電力を補助するコンデンサと、を備えることを特徴とする回路。 - 前記電力制限手段は定電流回路であることを特徴とする請求項1に記載の回路。
- 前記電力制限手段は抵抗であることを特徴とする請求項1に記載の回路。
- 前記信号処理手段はオーディオ信号に係わる信号処理を行うことを特徴とする請求項1乃至請求項3の何れかに記載の回路。
- 請求項4に記載の回路と、
前記バッテリと、
前記増幅手段から出力される信号に基づいて駆動されるスピーカまたはトランスデューサの少なくとも何れか一方と、を備えることを特徴とする楽器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016008374A JP2017129690A (ja) | 2016-01-20 | 2016-01-20 | 回路および楽器 |
EP17152083.6A EP3197009B1 (en) | 2016-01-20 | 2017-01-19 | Dual power supply in a musical instrument |
US15/409,710 US9985518B2 (en) | 2016-01-20 | 2017-01-19 | Circuit and musical instrument |
CN201710041746.0A CN107026497B (zh) | 2016-01-20 | 2017-01-20 | 电路和乐器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016008374A JP2017129690A (ja) | 2016-01-20 | 2016-01-20 | 回路および楽器 |
Publications (1)
Publication Number | Publication Date |
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JP2017129690A true JP2017129690A (ja) | 2017-07-27 |
Family
ID=57909449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016008374A Pending JP2017129690A (ja) | 2016-01-20 | 2016-01-20 | 回路および楽器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9985518B2 (ja) |
EP (1) | EP3197009B1 (ja) |
JP (1) | JP2017129690A (ja) |
CN (1) | CN107026497B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108022576A (zh) * | 2018-01-12 | 2018-05-11 | 惠州市德博声学有限公司 | 一种弦乐器同频加振扩声技术及共振喇叭在乐器上的应用 |
FR3096152A1 (fr) | 2019-05-17 | 2020-11-20 | STMicroelectronics (Grand Ouest) SAS | DC-DC Converter with Steady State Current Limitation |
CN114175445A (zh) | 2019-07-26 | 2022-03-11 | 歌尔股份有限公司 | 扬声器系统和电子装置 |
JP2021107903A (ja) * | 2019-12-27 | 2021-07-29 | ローランド株式会社 | 電子楽器、及び電子楽器の電源制御装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003023735A (ja) * | 2001-07-04 | 2003-01-24 | Pentax Corp | 電源装置 |
JP2007333757A (ja) * | 2006-06-12 | 2007-12-27 | Yamaha Corp | 楽器 |
JP2009094684A (ja) * | 2007-10-05 | 2009-04-30 | Yamaha Corp | 電子機器 |
US20140038672A1 (en) * | 2011-04-22 | 2014-02-06 | Nokia Corporation | Providing power to dual radio modems |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1394304A (zh) | 2000-07-05 | 2003-01-29 | 皇家菲利浦电子有限公司 | 设备 |
AU2002322418A1 (en) * | 2001-06-21 | 2003-01-08 | Champion Microelectronic Corp. | Current inrush limiting and bleed resistor current inhibiting in a switching power converter |
GB2385725B (en) * | 2002-02-25 | 2005-05-18 | Audio Partnership Plc | Power supply arrangements |
JP2004297753A (ja) | 2003-02-07 | 2004-10-21 | Nec Tokin Corp | 電源回路、及び該電源回路を備えた通信機器 |
JP4363457B2 (ja) * | 2007-05-01 | 2009-11-11 | ヤマハ株式会社 | 電力制御装置、スピーカ装置および電力制御方法 |
US7888907B2 (en) * | 2007-10-30 | 2011-02-15 | Bose Corporation | Controlled charging and use of power source |
CN203895106U (zh) * | 2014-04-10 | 2014-10-22 | 安徽国防科技职业学院 | 吉他调音器电路 |
-
2016
- 2016-01-20 JP JP2016008374A patent/JP2017129690A/ja active Pending
-
2017
- 2017-01-19 EP EP17152083.6A patent/EP3197009B1/en active Active
- 2017-01-19 US US15/409,710 patent/US9985518B2/en active Active
- 2017-01-20 CN CN201710041746.0A patent/CN107026497B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003023735A (ja) * | 2001-07-04 | 2003-01-24 | Pentax Corp | 電源装置 |
JP2007333757A (ja) * | 2006-06-12 | 2007-12-27 | Yamaha Corp | 楽器 |
JP2009094684A (ja) * | 2007-10-05 | 2009-04-30 | Yamaha Corp | 電子機器 |
US20140038672A1 (en) * | 2011-04-22 | 2014-02-06 | Nokia Corporation | Providing power to dual radio modems |
Also Published As
Publication number | Publication date |
---|---|
CN107026497A (zh) | 2017-08-08 |
US9985518B2 (en) | 2018-05-29 |
US20170207696A1 (en) | 2017-07-20 |
EP3197009A1 (en) | 2017-07-26 |
EP3197009B1 (en) | 2019-05-22 |
CN107026497B (zh) | 2020-02-18 |
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