JPS5227234A - Multiplying circuit - Google Patents

Multiplying circuit

Info

Publication number
JPS5227234A
JPS5227234A JP51101368A JP10136876A JPS5227234A JP S5227234 A JPS5227234 A JP S5227234A JP 51101368 A JP51101368 A JP 51101368A JP 10136876 A JP10136876 A JP 10136876A JP S5227234 A JPS5227234 A JP S5227234A
Authority
JP
Japan
Prior art keywords
multiplying circuit
multiplying
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP51101368A
Other languages
English (en)
Inventor
Doichiyu Rarufu
Aaru Gurifuisu Guren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Publication of JPS5227234A publication Critical patent/JPS5227234A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/483—Computations with numbers represented by a non-linear combination of denominational numbers, e.g. rational numbers, logarithmic number system or floating-point numbers
    • G06F7/487—Multiplying; Dividing
    • G06F7/4876—Multiplying
    • 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
    • G10H7/00—Instruments in which the tones are synthesised from a data store, e.g. computer organs
    • G10H7/08—Instruments in which the tones are synthesised from a data store, e.g. computer organs by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform
    • G10H7/10—Instruments in which the tones are synthesised from a data store, e.g. computer organs by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform using coefficients or parameters stored in a memory, e.g. Fourier coefficients
    • G10H7/105—Instruments in which the tones are synthesised from a data store, e.g. computer organs by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform using coefficients or parameters stored in a memory, e.g. Fourier coefficients using Fourier coefficients

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Algebra (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Nonlinear Science (AREA)
  • Complex Calculations (AREA)
JP51101368A 1975-08-25 1976-08-25 Multiplying circuit Pending JPS5227234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/607,141 US4031377A (en) 1975-08-25 1975-08-25 Fast multiplier circuit employing shift circuitry responsive to two binary numbers the sum of which approximately equals the mantissa of the multiplier

Publications (1)

Publication Number Publication Date
JPS5227234A true JPS5227234A (en) 1977-03-01

Family

ID=24430993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51101368A Pending JPS5227234A (en) 1975-08-25 1976-08-25 Multiplying circuit

Country Status (2)

Country Link
US (1) US4031377A (ja)
JP (1) JPS5227234A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59113494A (ja) * 1982-12-20 1984-06-30 松下電器産業株式会社 エンベロ−プ制御装置
JPS59113495A (ja) * 1982-12-20 1984-06-30 松下電器産業株式会社 エンベロ−プ制御装置
JPH05197380A (ja) * 1992-10-30 1993-08-06 Matsushita Electric Ind Co Ltd エンベロープ制御装置

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144789A (en) * 1977-06-06 1979-03-20 Kawai Musical Instrument Mfg. Co. Ltd. Amplitude generator for an electronic organ
GB1582958A (en) * 1977-06-09 1981-01-21 Inst Maszyn Matematycznych War Digital system for binary multiplication of a number by a sum of two numbers
US4269101A (en) * 1979-12-17 1981-05-26 Kawai Musical Instrument Mfg. Co., Ltd Apparatus for generating the complement of a floating point binary number
US4287805A (en) * 1980-04-28 1981-09-08 Norlin Industries, Inc. Digital envelope modulator for digital waveform
JPS60163128A (ja) * 1984-02-02 1985-08-26 Nec Corp 乗算回路
US4691293A (en) * 1984-12-28 1987-09-01 Ford Aerospace & Communications Corporation High frequency, wide range FIR filter
US4795974A (en) * 1987-07-24 1989-01-03 Ford Motor Company Digital energy meter
US4884232A (en) * 1987-12-14 1989-11-28 General Dynamics Corp., Pomona Div. Parallel processing circuits for high speed calculation of the dot product of large dimensional vectors
WO1993017383A1 (de) * 1992-02-29 1993-09-02 Hoefflinger Bernd Schaltungsanordnung zum digitalen multiplizieren von integer-zahlen
US5436860A (en) * 1994-05-26 1995-07-25 Motorola, Inc. Combined multiplier/shifter and method therefor
WO1999033276A1 (de) * 1997-12-19 1999-07-01 Infineon Technologies Ag Vorrichtung zur multiplikation mit konstanten faktoren und deren verwendung zur videokompression (mpeg)
JP3895887B2 (ja) * 1999-06-25 2007-03-22 日本電気株式会社 デシベルレベル調整装置
EP1122637A3 (de) * 2000-01-31 2005-10-12 Micronas GmbH Recheneinheit für eingeschränkte Signalverarbeitung
KR100402734B1 (ko) * 2001-12-21 2003-10-22 한국전자통신연구원 부호화된 피승수를 사용하는 고정 소수점 곱셈 장치 및 그방법
US20030140079A1 (en) * 2002-01-18 2003-07-24 Murphy Charles Douglas Multiple number representations for multiplication complexity reduction in signal processing transforms
US7483479B2 (en) 2004-09-16 2009-01-27 Keyeye Communications Scaled signal processing elements for reduced filter tap noise
CN119781729B (zh) * 2025-03-11 2025-08-08 南京航空航天大学 近似浮点乘累加电路及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489888A (en) * 1966-06-29 1970-01-13 Electronic Associates Floating point look-ahead binary multiplication system utilizing two's complement notation for representing negative numbers
US3696235A (en) * 1970-06-22 1972-10-03 Sanders Associates Inc Digital filter using weighting
US3691359A (en) * 1970-07-28 1972-09-12 Singer General Precision Asynchronous binary multiplier employing carry-save addition
US3800130A (en) * 1973-07-09 1974-03-26 Rca Corp Fast fourier transform stage using floating point numbers
US3919535A (en) * 1974-08-21 1975-11-11 Singer Co Multiple addend adder and multiplier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59113494A (ja) * 1982-12-20 1984-06-30 松下電器産業株式会社 エンベロ−プ制御装置
JPS59113495A (ja) * 1982-12-20 1984-06-30 松下電器産業株式会社 エンベロ−プ制御装置
JPH05197380A (ja) * 1992-10-30 1993-08-06 Matsushita Electric Ind Co Ltd エンベロープ制御装置

Also Published As

Publication number Publication date
US4031377A (en) 1977-06-21

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