JPH0494299A - Speaker equipment - Google Patents

Abstract

PURPOSE:To obtain reproduction of a sound field in a concert hall or its surround effect by delaying and reproducing an original sound in a wireless way from a sound signal source. CONSTITUTION:A sound wave from a reproducing device (a) is outputted to a listening room (e) through a front left main speaker (c) and a front right main speaker (d) via an amplifier (b). The sound wave is picked up by microphones of speaker equipments (f), (g) and outputted again as the sound wave after sound signal processing. Thus, a listener (h) enjoys a music or the like in a state close to the presence in a concert hall, and then the atmosphere as if to be in a concert hall is realized and the surround effect is simply obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an audio playback device or a playback device for a performance venue, and particularly relates to a playback device for a performance venue, and the present invention relates to an audio playback device or a playback device for a performance venue, and in particular, the present invention relates to an audio playback device or a playback device for a performance hall. This invention relates to a speaker device.

The sub-speaker device in conventional surround systems uses amplifiers that drive the front left and right main speakers.
A surround effect can be obtained by installing a delay device that branches the audio signal and inputting it via an audio signal line, and by connecting a power amplifier and sub-speakers to this, and placing the sub-speakers on both sides or at the rear. Ta.

In this conventional surround speaker device, in a listening room for listening to audio or a performance venue, from an amplifier that drives the front left and right main speakers,
It is necessary to branch the audio signal and run a signal line to a delay device for driving the sub-speaker, which has the disadvantage of requiring a circuit for branching this signal line and a signal line.

Furthermore, the purpose of obtaining such a surround effect in a listening room is not only to reproduce the sound surround of a movie, but also to reproduce a performance venue, but with conventional surround speaker equipment, electric Because the speakers were connected to each other, the voices of people in the listening room had a reverberation unique to that room, which felt different from the Dell sound field coming from the speakers.

The speaker device of the present invention includes a microphone that receives sound waves emitted from each of the front left and right main speakers of a listening room, a microphone amplifier, a delay device that delays this signal according to a certain rule to reproduce a sound field, and a speaker drive. It is equipped with a power amplifier and a speaker, and has the function of a sub-speaker that outputs the sound waves in the listening room from the speaker again after processing the sound field effects.

Next, the present invention will be explained using the drawings. FIG. 1 shows an example of use of the speaker device of the present invention.

In the reproduction device a, sound waves are outputted into the listening room e from a main speaker c on the front left side and a main speaker d on the right side through an amplifier b. These sound waves are picked up by the microphones of the speaker devices f and g of the present invention, and after audio signal processing are output as sound waves again, the listener h is at the performance venue and can enjoy the music etc. in a state similar to listening to it. I can do it.

Furthermore, when there are a plurality of listeners h, the conversation there is also heard from the sub-speakers by the speaker devices f and g, so that an atmosphere as if one were present at the performance venue can be obtained as an effect.

FIG. 2 is a block diagram of a speaker device of the present invention as one embodiment.

FIG. 2 shows a microphone 1 for converting sound waves in the listening room e into audio signals, an output signal line 2 of the microphone 1, an audio amplifier 3 connected to the output signal line 2, and the audio amplifier 3. Output audio signal line 4 connected to
, a sound field reproduction delay circuit 5 connected to the output audio signal line 4, an output audio signal line 6 connected to the sound field reproduction delay circuit 5, and a connection to the output audio signal line 6. a power amplifier 7, an audio signal line 8 connected to the power amplifier 7, a speaker 9 connected to the audio signal line 8, a DC power supply 10, and a power line connected to the DC power supply 10. 11, and a commercial power line 12 that supplies power to the DC power supply device 10. This power supply device 10 includes not only a commercial power source but also a battery.

The example of speaker and microphone arrangement in Figure 3 is
(1), (2), and (3) in Fig. 3 use a shielding plate or take care in their arrangement to prevent the microphone 1 and speaker 9 attached to the microphone 1 from generating howling, etc. This is an example in which the microphone 1 is installed at an appropriate position behind the speaker 9, above and below, left and right, etc., so that the sound waves from the speaker 9 do not howl to the microphone 1.

As explained above, the present invention picks up the sound waves generated by the main speaker with a microphone behind the listener, processes the sound field reproduction, and then reproduces them with the speaker from a location approximately close to the microphone. There is no need to pass signals from the included playback device via wire, making it extremely easy to use.
Provides a surround effect.

Furthermore, by providing a surround effect that includes the voices of the listeners, it has the effect of further bringing out the atmosphere of being in a real performance venue.

[Brief explanation of drawings]

Fig. 1 is an example of use including the arrangement of the speaker device Fig. 2 is a block diagram of the speaker device Fig. 3 is an example of the arrangement of speakers and microphones a...
Playback device b...Amplifier c...Left main speaker d...Right main speaker e...Listening room f...Speaker device of the present invention g...Speaker of the present invention Device h...Listener (listener) 1...Microphone 2...Audio signal line 3 output by the microphone...
・Amplifier 4... Amplifier output signal line 5... Delay circuit for sound field reproduction 6... Delay circuit for sound field reproduction output signal line 7... Power amplifier 8... Power Amplifier output signal line 9... Speaker 10... DC power supply device 11... Power line 12... Commercial power line 13... Housing

Claims (1)

[Claims] A microphone that converts sound waves in the air such as a room where an audio device is listened to into an electrical signal, an audio amplifier that amplifies the audio signal output from the microphone, and a delay device that delays the audio signal according to a certain rule. A speaker device having a power amplifier for driving a speaker and a speaker, characterized in that a sound field reproduction or a surround effect of a performance hall is obtained by wirelessly reproducing original sound from an audio signal source with a delay. speaker device.