JPH0483500A - Speaker device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement of a speaker device in a reproducing device for singing popular songs and accompaniment music.

[Prior Art] Conventionally, in a karaoke speaker device for general home use, which has a relatively simple configuration among playback devices for singing popular songs and accompaniment music, a function for adjusting the sound quality of the sound reproduced from the speaker unit has been provided. Therefore, the characteristics of the output level of the reproduced sound from bass to treble, that is, the frequency characteristics, are constant for each individual device, making it impossible for the user to select the reproduced sound according to his wishes. It has become.

[Problems to be Solved by the Invention] With the conventional playback device as described above, it is not possible to change the frequency characteristics of the sound reproduced from the speaker unit, so the location where the device is installed and the tone of the human voice when singing karaoke cannot be changed. , it is impossible to distinguish between tones due to regional differences (for example, Kanto-style tones, Kansai-style tones, etc.), making it impossible to obtain tones that suit one's taste.

It also selects frequency characteristics according to the type of music being played, such as suppressing the bass range depending on the size of the space where it is installed, or increasing the midrange level according to the user's preference depending on the type of music being played. The problem was that it was not possible.

This invention was made in order to solve the above-mentioned problems, and with a simple configuration, it is possible to arbitrarily adjust the sound quality by changing the low and mid-range frequencies depending on the size of the installation place and the music being played. A sound quality switch is provided so that the sound quality can be changed.
An object of the present invention is to obtain a speaker device capable of selecting a reproduced sound from a speaker unit.

[Means for Solving the Problems] A speaker device according to the present invention includes a frequency switching circuit including a plurality of inductance circuit elements connected to a woofer speaker unit fixed to a speaker cabinet and a bypass capacitor connected to a tweeter speaker unit. , and a switching switch for performing the switching operation of the circuit from outside the speaker cabinet.

[Function] In this invention, when the frequency switching circuit is switched by the switching switch, the woofer-speaker unit is driven through any one of the plurality of inductance circuit elements, and the frequency blocked by the inductance is driven. Since the current drives the two-way speaker Uni-Soto through the No. 1 innovation capacitor, the response in a predetermined range of low and midrange frequencies can be increased or decreased depending on the switched inductance value.

[Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a front view of a speaker cabinet provided in a speaker device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a frequency characteristic switching circuit within the speaker cabinet.

In Figures 1 and 2, (1) is a woofer-speaker unit that outputs reproduced sound in the low and midrange range, (2) is a tweeter speaker unit that outputs reproduced sound in the high-frequency range, and (3) is a speaker. Cabinet (4) is a bass reflex duct that increases the sound pressure level in the low and midrange range by the effect of the resonator formed inside the cabinet, (5) is a switch that changes the frequency characteristics of the reproduced sound, and (6) is a In the frequency switching circuit, when the switching switch (5) is operated, the driving circuit of the woofer speaker unit (1) is connected to the inductance L when the switch is set to A, and the inductance L when the switch is set to B. The frequency band of the voltage applied to the bypass capacitor C connected in series to the drive circuit of the unit (2) is changed within a predetermined range.

In the speaker device configured as described above, the audio voltage applied to the input terminal in FIG.
According to B, the drive of the woofer-speaker unit (1) is cut in the high frequency range.

At the same time, the tweeter-speaker unit (2) is driven via a bypass capacitor C in response to this high frequency cut.

For example, if L > L2, the frequency (Hz) in Figure 3
As shown in an example of the correlation diagram between the changeover switch (5) and the response (dβ), when the changeover switch (5) is in the Swiss/Sochi position A, a sound pressure level response with the frequency characteristic of curve A is obtained.
Similarly, in the case of switch position B, as in curve B, 200
Reproduced sound with a lower response than curve A can be obtained in the low and medium range from Hz to 7000 Hz.

In addition, in the above embodiment, an example was explained in which two types of inductances L and L are switched by operating the changeover switch (5), but if a configuration is adopted in which more types of inductance circuit elements are switched, - layer diversity is achieved. The playback sound can be selected from a wide range of frequency characteristics.

[Effects of the Invention] As described above, according to the present invention, a frequency characteristic switching circuit is provided inside the speaker cabinet, and the low-mid frequency response can be easily changed by the switching switch that can be operated from the outside of the speaker cabinet. With this configuration, there is an effect that the reproduced sound of the user's preference can be obtained with a simple structure.

[Brief explanation of the drawing]

Fig. 1 is a front view of a speaker cabinet provided in each beaker device according to an embodiment of the present invention, Fig. 2 is a frequency characteristic switching circuit diagram provided in the speaker cabinet of Fig. 1, and Fig. 3 is a diagram of the present invention. FIG. 2 is a diagram showing a response according to the frequency of reproduced sound for detailed explanation of the sound. In the figure, (1) is a woofer speaker unit, (2) is a tweeter speaker unit, (3) is a port, and (4) is a woofer speaker unit.
is the speaker cabinet, (5) is the selector switch,
(6) is a frequency switching circuit, L and L are inductances, and C is a bypass capacitor. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A device for reproducing a sound range from bass to treble by fixing a woofer speaker unit and a tweeter speaker unit to a speaker cabinet, comprising a plurality of inductances provided in the speaker cabinet and connected to the woofer speaker unit. A speaker comprising: a frequency switching circuit including a circuit element and a high-pass capacitor connected to the tweeter speaker unit; and a switching switch provided outside the speaker cabinet for switching the frequency switching circuit. Device.