JPS57188198A - Motional feedback speaker circuit - Google Patents

Motional feedback speaker circuit

Info

Publication number
JPS57188198A
JPS57188198A JP7390481A JP7390481A JPS57188198A JP S57188198 A JPS57188198 A JP S57188198A JP 7390481 A JP7390481 A JP 7390481A JP 7390481 A JP7390481 A JP 7390481A JP S57188198 A JPS57188198 A JP S57188198A
Authority
JP
Japan
Prior art keywords
signal
level
low sound
oscillation
signal corresponding
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
JP7390481A
Other languages
Japanese (ja)
Inventor
Shintaro Hirose
Yasushi Miyoshi
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP7390481A priority Critical patent/JPS57188198A/en
Publication of JPS57188198A publication Critical patent/JPS57188198A/en
Pending 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
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Abstract

PURPOSE:To improve the characteristics at low sound region, by picking up and synthesizing a signal corresponding to the oscillation speed with level expansion from the output of a speaker and a signal corresponding to the oscillation acceleration and comparing them and feeding back with an input signal. CONSTITUTION:A detection signal outputted from a detector 3 fitted with a diaphragm 1 is integrated at 7, amplified at 8 and outputted with level adjust- ment 4' as a signal corresponding to the oscillation speed. On the other hand, a detection signal correspondig to the oscillation acceleration of a diaphragm 1 detected at the detector 3 is directly adjusted at 4 for the level and applied to a comparison circuit 5 together with the output of the level adjuster 4'. The signal is compared with an input signal at a comparison circuit 5 for synthesis to form a feedback signal and the signal is fed back to an amplifier 2 via a high band cut filter 6. Thus, small and medium inputs at the low sound are extended for the reproduction area and a large input is damped, allowing to improve the characteristics of the low sound part.
JP7390481A 1981-05-15 1981-05-15 Motional feedback speaker circuit Pending JPS57188198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7390481A JPS57188198A (en) 1981-05-15 1981-05-15 Motional feedback speaker circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7390481A JPS57188198A (en) 1981-05-15 1981-05-15 Motional feedback speaker circuit

Publications (1)

Publication Number Publication Date
JPS57188198A true JPS57188198A (en) 1982-11-19

Family

ID=13531637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7390481A Pending JPS57188198A (en) 1981-05-15 1981-05-15 Motional feedback speaker circuit

Country Status (1)

Country Link
JP (1) JPS57188198A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592088A (en) * 1982-10-14 1986-05-27 Matsushita Electric Industrial Co., Ltd. Speaker apparatus
US5226089A (en) * 1990-04-16 1993-07-06 Samsung Electronics Co., Ltd. Circuit and method for compensating low frequency band for use in a speaker
KR100506471B1 (en) * 2001-07-25 2005-08-03 미쓰비시덴키 가부시키가이샤 Sound control unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592088A (en) * 1982-10-14 1986-05-27 Matsushita Electric Industrial Co., Ltd. Speaker apparatus
US5226089A (en) * 1990-04-16 1993-07-06 Samsung Electronics Co., Ltd. Circuit and method for compensating low frequency band for use in a speaker
KR100506471B1 (en) * 2001-07-25 2005-08-03 미쓰비시덴키 가부시키가이샤 Sound control unit

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