JP2575457Y2 - Audio equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device, and more particularly, to an audio device which uses a plurality of speakers by switching.

[0002]

2. Description of the Related Art FIG. 6 shows an example of a conventional audio apparatus which uses a plurality of speakers by switching. When the three-circuit selector switch shown in the figure is at the A contact, the signals of the L channel and the R channel are input to the respective channels of the A speaker, and when the switch is at the B contact, the signals of the L channel and the R channel are input to the B speaker. Input to each channel.

Further, when the three-circuit selector switch is at the C contact, the signals of the L channel and the R channel are input to the respective channels of the A speaker and the B speaker.

[0004]

In the above-mentioned conventional audio apparatus, for example, when the A speaker is a speaker that is difficult to produce low-pitched sound, it is reinforced by sounding both speakers. However, there is a disadvantage that the goodness of the A speaker is impaired because it produces the same sound.

[0005] Further, when listening as background music, there is a drawback that the L component or the R component becomes stronger depending on where the stereo sound is heard, and it is difficult to hear the stereo sound. Although there are audio devices that can be switched to monaural, there is a drawback that the sound spread is lost if the sound is monaural.

[0006] The present invention has been made in view of the above points, and an object thereof is to enhance a low frequency range of a speaker which is difficult to produce a low frequency range without impairing the goodness of the speaker. It is to provide an audio device.

Another object of the present invention is to provide an audio device which has a feeling of sound spread and does not care about the L / R difference.

[0008]

SUMMARY OF THE INVENTION An audio device according to the present invention is an audio device capable of switching and using two sets of speakers forming a set of an L-channel speaker and an R-channel speaker. A switching circuit for inputting the original signal of the L channel and the R channel to the speaker, and a switching circuit for inputting a signal obtained by exchanging the signal of the L channel and the R channel is added to the other set of speakers.

[0009] Further, the audio device of the present invention has L
In an audio device capable of switching and using two sets of speakers forming a set by a channel speaker and an R-channel speaker, one set of speakers has L
A switching circuit for inputting the original signals of the channel and the R channel and for inputting the signals of the L channel and the R channel through a low-pass filter is added to the other set of speakers. Further, the audio device according to the present invention is an audio device capable of switching and using two sets of speakers forming a set of an L-channel speaker and an R-channel speaker. The original signal of the channel is input, and the other pair of speakers receives the L channel and the R channel.
A switching circuit for inputting a signal obtained by exchanging channel signals; a low-pass filter for inputting L-channel and R-channel original signals to one set of speakers and a low-pass filter for the other set of speakers; And a switching circuit for inputting the signal through the switch.

In each of the audio devices, one of the speakers is a non-directional speaker.

Further, in each of the above audio devices,
Each set of L-channel speakers and R-channel speakers is integrated by a cabinet.

[0012]

In the audio device of the present invention, one set of loudspeakers receives the original signals of the L channel and the R channel, and the other set of loudspeakers receives the signals obtained by exchanging the signals of the L channel and the R channel. In this case, the L / R difference is canceled out by both sets of speakers, and the speakers are driven by the stereo signal, so that a unique listening feeling that is not found in the conventional one with a feeling of spread can be obtained.

When the original signals of the L channel and the R channel are inputted to one set of speakers and the signals of the L channel and the R channel are inputted to the other set of speakers through a low-pass filter, both of the speakers are inputted. Since the characteristics of the signal input to the speaker change, the low frequency range of the one speaker can be enhanced without deteriorating the goodness of the other speaker. Further, if an omnidirectional speaker is used as the one speaker, L / R can be used everywhere. The sound field feeling increases while the difference is not bothersome.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An audio apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram showing a characteristic portion of an audio device according to a first embodiment of the present invention.

When the four-circuit changeover switch 6 shown in the figure is at the A contact, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1, respectively, and input to the respective channels of the A speaker 4.

When the four-circuit selector switch 6 is at the B contact, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1, respectively, and input to the respective channels of the B speaker 5.

When the four-circuit selector switch 6 is at the contact C, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1 and input to the L channel and the R channel of the A speaker 4, respectively. Speaker 5
Are input so as to enter the R channel and the L channel, respectively.

Further, when the four-circuit changeover switch 6 is at the D contact, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1 and input to the L channel and the R channel of the A speaker 4, respectively. After being amplified by the amplifiers 2 and 2 through the filters 3 and 3,
The signals are input to the L channel and the R channel of the speaker 5, respectively.

As described above, the A speaker or the B speaker can be selected and used by the changeover switch, and the low range that the A speaker does not have enough can be reinforced by the B speaker by the signal passed through the low-pass filter.

Further, by switching the changeover switch, the A speaker and the B speaker are driven by the signals in which the L / R are interchanged with each other, so that the L / R difference does not matter,
In addition, a wide sense of hearing can be obtained.

FIG. 2A shows an example in which the changeover switches of the embodiment shown in FIG. 1 are replaced by analog switches S1 to S5, and these analog switches are operated by the microcomputer 7. FIG. 2 shows the analog switches S1 to S5.
By switching in the switching modes A to D shown in the table (b), the same function as that shown in FIG. 1 can be obtained.

FIG. 3 is a circuit diagram showing a characteristic portion of an audio apparatus according to a second embodiment of the present invention. 4 shown in the figure
When the circuit changeover switch 6 is at the A contact, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1, respectively, and input to the respective channels of the A speaker 4.

When the four-circuit selector switch 6 is at the B contact, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1, respectively, and input to the respective channels of the B speaker 5.

When the four-circuit changeover switch 6 is at the contact C, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1 and input to the L channel and the R channel of the A speaker 4, respectively. Speaker 5
Are input so as to enter the R channel and the L channel, respectively.

Further, when the four-circuit changeover switch 6 is at the D contact, the signals of the L channel and the R channel are amplified by the amplifiers 1 and 1 and input to the L channel and the R channel of the B speaker 5, respectively. After being amplified by the amplifiers 2 and 2 through the filters 3 and 3,
The signals are input to the L channel and the R channel of the speaker 4, respectively.

As described above, the A speaker or the B speaker can be selected and used by the changeover switch, and the low range that the B speaker is insufficient with the A speaker can be reinforced by the signal passed through the low-pass filter.

Further, the A / B speakers are driven by the signals in which the L / Rs are replaced with each other by switching the changeover switches, so that the L / R difference does not matter,
In addition, a wide sense of hearing can be obtained.

FIG. 4A shows an example in which the changeover switches of the embodiment shown in FIG. 3 are replaced by analog switches S1 to S6, and these analog switches are operated by the microcomputer 7. FIG. 4 shows the analog switches S1 to S6.
By switching in the switching modes A to D shown in the table (b), the same function as that shown in FIG. 3 can be obtained.

FIG. 5 shows A in the first or second embodiment.
An example is shown in which an omnidirectional speaker is used as a speaker or a B speaker, and the other baffle-mounted speaker is integrated with a cabinet. Since the omnidirectional speaker has low volume in the low frequency range, it is used as the A speaker in the first embodiment,
In this embodiment, the speaker is used as a B speaker.

By using the omnidirectional speaker, it is possible to enjoy music having a sound field feeling.

[0031]

According to the audio device of the present invention, it is possible to enhance the low frequency range of a speaker which is difficult to produce in the low frequency range without impairing the quality of the speaker.

In addition, an audible sensation can be obtained in which the L / R difference is not bothersome and the sound spreads.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a characteristic portion of an audio device according to a first embodiment of the present invention.

FIG. 2A is a circuit diagram showing a modification of the embodiment;
FIG. 2B is a table showing the analog switch switching mode of the same example.

FIG. 3 is a circuit diagram showing a characteristic portion of an audio device according to a second embodiment of the present invention.

FIG. 4A is a circuit diagram showing a modification of the embodiment;
FIG. 4B is a table showing the analog switch switching mode of the same example.

FIG. 5A is a perspective view illustrating a speaker used in the first or second embodiment, and FIG. 5B is a front view illustrating the speaker.

FIG. 6 is a circuit diagram showing an example of a conventional audio device that uses a plurality of speakers by switching.

[Explanation of symbols]

Reference Signs List 1 amplifier 2 amplifier 3 low-pass filter 4 A speaker 5 B speaker 6 changeover switch 7 microcomputer S1, S2, S3, S4, S5, S6 analog switch

Claims (5)

(57) [Scope of request for utility model registration] 1. An audio apparatus capable of switching and using two sets of speakers forming a set of an L-channel speaker and an R-channel speaker, wherein one set of speakers includes an original signal of an L-channel and an R-channel. And a switching circuit for inputting a signal obtained by exchanging L-channel and R-channel signals to the other set of speakers. 2. An audio apparatus capable of switching and using two sets of speakers forming a set of an L-channel speaker and an R-channel speaker, wherein one set of speakers includes L-channel and R-channel original signals. And a switching circuit for inputting L-channel and R-channel signals through a low-pass filter to the other set of speakers. 3. An audio apparatus capable of switching and using two sets of speakers forming a set of an L-channel speaker and an R-channel speaker, wherein one set of speakers includes an original signal of an L-channel and an R-channel. And a switching circuit for inputting a signal obtained by exchanging the signals of the L channel and the R channel to the other set of speakers, and inputting the original signals of the L channel and the R channel to one set of the speakers, and An audio apparatus characterized in that a switching circuit for inputting L-channel and R-channel signals through a low-pass filter is added to the speaker. 4. The audio device according to claim 1, wherein one of the sets of speakers is an omnidirectional speaker. 5. The audio device according to claim 1, wherein each set of L-channel speakers and R-channel speakers is integrated in a cabinet by a cabinet.