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1. 发明专利

JPH07105983B2 失效
公开(公告)号：JPH07105983B2
公开(公告)日：1995-11-13
申请号：JP7823984
申请日：1984-04-18
IPC分类号： H03G5/04 , H04R3/02 , H04R3/04 , H04S1/00

2. 发明专利

JPS625364B2 失效
公开(公告)号：JPS625364B2
公开(公告)日：1987-02-04
申请号：JP3296979
申请日：1979-03-20
申请人： KENUTSUDO KK
发明人： TAMURA EIJIRO
IPC分类号： H03G5/02 , H03G5/04

3. 发明专利

JPS6158047B2 失效
公开(公告)号：JPS6158047B2
公开(公告)日：1986-12-10
申请号：JP6639680
申请日：1980-05-21
申请人： CLARION CO LTD
发明人： YAMADA SHIGERU , OOHARA KAZUYA
IPC分类号： H03G5/02 , H03G5/04

4. 发明专利

JPS61186010A VOICE AMPLIFIER 失效
公开(公告)号：JPS61186010A
公开(公告)日：1986-08-19
申请号：JP2773886
申请日：1986-02-10
申请人： KUROODO KARUPANTEIE
发明人： KUROODO KARUPANTEIE
IPC分类号： H03G9/00 , H03G3/32 , H03G5/04

5. 发明专利

JPS60223295A SOUND FIELD CORRECTOR 失效
公开(公告)号：JPS60223295A
公开(公告)日：1985-11-07
申请号：JP7824084
申请日：1984-04-18
申请人： PIONEER ELECTRONIC CORP
发明人： TOKUGE AKIO , KUNUGI YOSHIROU
IPC分类号： H03G5/04 , H04R3/04 , H04S1/00
摘要： PURPOSE:To eliminate the effects of reflected sounds by providing a feedback loop from a signal source to the inside of an amplifying route led to a speaker and setting the transmission function of the feedback loop at the prescribed value. CONSTITUTION:An input signal IN given from a signal source is supplied to an amplifier 12 having a transmission function G3 via a subtractor 10. The output of the amplifier 12 is used to a drive signal of a speaker via a power amplifier 13 as well as to an input of a feedback loop containing a delay device 14, a level controller 15 and an amplifier 16. The device 14 is set at a delay time decided by reflection, and the controller 15 is set at a level equivalent to the level attenuation. Thus it is possible to eliminate the disturbance of the frequency characteristics which is caused by the time delay and the phase reflected by a wall, etc.

6. 发明专利

JPS60223292A SOUND FIELD CORRECTOR 失效
公开(公告)号：JPS60223292A
公开(公告)日：1985-11-07
申请号：JP7823784
申请日：1984-04-18
申请人： PIONEER ELECTRONIC CORP
发明人： SASAKI YOSHIO , KUNUGI YOSHIROU
IPC分类号： H03G5/04 , H04R3/04 , H04S1/00 , H04R3/02
摘要： PURPOSE:To reduce the effects of reflected waves by producing plural reflected wave eliminating signals and applying these signals to an original signal. CONSTITUTION:An original signal IN is supplied to (n) units of delay devices 1.1-1.n and delayed respectively by a prescribed delay time. These delay outputs are supplied to (n) units of level controllers 2.1-2.n to receive attenuation alpha respectively. These attenuation outputs are supplied to inverters or buffers 3.1-3.n. If the (n) is set at an odd number, the inverters are defined with inversion of polarity. While the buffers are defined with no inversion of polarity when the (n) is set at an even number. The (n) units of outputs of those inverters or buffers are added to the signal IN by an adder 4 to obtain a drive signal of a speaker 5 of a power amplifer 9.

7. 发明专利

JPS5929968B2 JPS5929968B2 - 失效
公开(公告)号：JPS5929968B2
公开(公告)日：1984-07-24
申请号：JP6319074
申请日：1974-06-03
申请人： Matsushita Electric Ind Co Ltd
发明人： ISHII SHINICHIRO
IPC分类号： H03H7/01 , H03G5/02 , H03G5/04 , H03H11/02 , H03H11/04

8. 发明专利

JPS58182310A Sound quality switching device 失效
标题翻译：声音质量开关装置
公开(公告)号：JPS58182310A
公开(公告)日：1983-10-25
申请号：JP6590382
申请日：1982-04-19
申请人： Matsushita Electric Ind Co Ltd
发明人： INOUE OSAMU
IPC分类号： H03G5/02 , H03G5/04
CPC分类号： H03G5/04
摘要： PURPOSE:To switch the high and the low frequency at the same time with a simple constitution, by connecting a connecting point between the 1st capacitor and a variable resistor for sound adjustment to a common terminal of a change- over switch via the 2nd capacitor. CONSTITUTION:The cut-off frequency for both high and low frequencies is changed by switching a changeover switch S4 only, allowing to change the frequency characteristics as shown in figure below. That is, fig. (a) shows the frequency characteristics when the switch S4 is turned on to the fixed terminal (a) and fig. (b) indicates the frequency characteristics when the S4 is turned on to the fixed terminal (b). Further, the cut-off frequency of the low and the high frequencies is changed at the same time, and this operation can be interlocked with an FM/AM band changeover switch of an FM/AM radio receiver.
摘要翻译：目的：通过简单的结构同时切换高频和低频，通过将第一个电容和可变电阻之间的连接点通过第二个电容连接到转换开关的公共端子进行声音调节。构成：仅通过切换开关S4来改变高频和低频的截止频率，允许改变频率特性，如下图所示。也就是说，无花果（a）表示开关S4接通固定端子（a）时的频率特性，（b）表示S4接通固定端子（b）时的频率特性。此外，低频和高频的截止频率同时改变，并且该操作可以与FM / AM无线电接收机的FM / AM频带切换开关互锁。

9. 发明专利

JPS58121813A TONE CONTROLLING DEVICE 失效
公开(公告)号：JPS58121813A
公开(公告)日：1983-07-20
申请号：JP460282
申请日：1982-01-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIBAYAMA TOYOHIRO , OOKAWA MITSUO
IPC分类号： H03G5/02 , H03G5/04
摘要： PURPOSE:To attain ease of convenience, by controlling a means for controlling the gain of high and low frequency signals out of gain control means with a single circuit means simultaneously. CONSTITUTION:In emphasizing (or attenuating) the high frequency only, a knob of a variable resistor 10 is turned to change a DC bias voltage to a high frequency gain controlling circuit 6. In emphasizing (or attenuating) the high and low frequency signals at the same time, the high and low frequency signals are controlled at the same time by turning a knob of a voltage variable resistor 15 and applying a voltage more than the voltages given from variable resistors 10, 11 through diodes 16, 17 to the circuit 6 and a low frequency gain controlling circuit 7 at the same time via diodes 18, 19.

10. 发明专利

JPS5869195A ELECTROACOUSTIC ENERGY CONVERTER 失效
公开(公告)号：JPS5869195A
公开(公告)日：1983-04-25
申请号：JP15286182
申请日：1982-09-03
申请人： ERITSUKU FUON MIHAROFUSUKI , YAKOBUSU KORUNERISU BAN DEIIKU
发明人： ERITSUKU FUON MIHAROFUSUKI , YAKOBUSU KORUNERISU BAN DEIIKU
IPC分类号： H04R3/00 , H03F3/183 , H03G5/02 , H03G5/04 , H04R3/04 , H04R25/00

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