JPS55121793A - Speaker system - Google Patents

Speaker system

Info

Publication number
JPS55121793A
JPS55121793A JP3035579A JP3035579A JPS55121793A JP S55121793 A JPS55121793 A JP S55121793A JP 3035579 A JP3035579 A JP 3035579A JP 3035579 A JP3035579 A JP 3035579A JP S55121793 A JPS55121793 A JP S55121793A
Authority
JP
Japan
Prior art keywords
circuit
delay circuit
adder
microphone
signal
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.)
Granted
Application number
JP3035579A
Other languages
Japanese (ja)
Other versions
JPS6031396B2 (en
Inventor
Shoichi Kusumoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3035579A priority Critical patent/JPS6031396B2/en
Publication of JPS55121793A publication Critical patent/JPS55121793A/en
Publication of JPS6031396B2 publication Critical patent/JPS6031396B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Abstract

PURPOSE:To make the sound pressure frequency characteristics flat even in the encoful room and thus ensure the reproduction of the high-fidelity signal, by providing the delay circuit corresponding to the delay time of the reflected wave to the direct wave and then uttering the aural signal passed through the delay circuit through the speaker after changed into the opposite phase. CONSTITUTION:The aural signal supplied to input terminal 5 is applied to the adder and then to delay circuit 6 provided between speaker system 2 and microphone 1 and featuring the delay time characteristics between direct wave D and reflected wave ID1 via switch 8. And in case tweeter 2a and woofer 2b of system 2 connected to filters 9a and 9b are installed in the echoful room, switch 8 is operated to give inversion through inverting circuit 7 to the aural signal delivered through circuit 6. The inversion output is then applied to the adder to correct the sound pressure frequency characteristics generated from system 2 into the flat one, and thus the voice supplied to microphone 1 is changed into the high-fidelity signal.
JP3035579A 1979-03-14 1979-03-14 speaker system Expired JPS6031396B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3035579A JPS6031396B2 (en) 1979-03-14 1979-03-14 speaker system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3035579A JPS6031396B2 (en) 1979-03-14 1979-03-14 speaker system

Publications (2)

Publication Number Publication Date
JPS55121793A true JPS55121793A (en) 1980-09-19
JPS6031396B2 JPS6031396B2 (en) 1985-07-22

Family

ID=12301541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3035579A Expired JPS6031396B2 (en) 1979-03-14 1979-03-14 speaker system

Country Status (1)

Country Link
JP (1) JPS6031396B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198914A (en) * 1982-05-14 1983-11-19 Matsushita Electric Ind Co Ltd Equalizer device
JPS60214192A (en) * 1984-04-09 1985-10-26 Pioneer Electronic Corp Sound field correcting device
JPS60214193A (en) * 1984-04-09 1985-10-26 Pioneer Electronic Corp Sound field correcting device
JPS60223292A (en) * 1984-04-18 1985-11-07 Pioneer Electronic Corp Sound field corrector
JPS60223294A (en) * 1984-04-18 1985-11-07 Pioneer Electronic Corp Sound field corrector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03262588A (en) * 1990-03-13 1991-11-22 Hitachi Plant Eng & Constr Co Ltd Pure water generating apparatus
WO2020022129A1 (en) 2018-07-25 2020-01-30 日鉄ケミカル＆マテリアル株式会社 Metal-cladded laminate plate, and circuit board

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198914A (en) * 1982-05-14 1983-11-19 Matsushita Electric Ind Co Ltd Equalizer device
JPS60214192A (en) * 1984-04-09 1985-10-26 Pioneer Electronic Corp Sound field correcting device
JPS60214193A (en) * 1984-04-09 1985-10-26 Pioneer Electronic Corp Sound field correcting device
JPS60223292A (en) * 1984-04-18 1985-11-07 Pioneer Electronic Corp Sound field corrector
JPS60223294A (en) * 1984-04-18 1985-11-07 Pioneer Electronic Corp Sound field corrector

Also Published As

Publication number Publication date
JPS6031396B2 (en) 1985-07-22

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