JP3183295U - 3D headphones stereo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a 3D headphone stereo capable of reproducing a more realistic real sound field by enhancing the surround effect and improving the sense of reality by reproducing the sound source movement of the headphone stereo.
An audio signal is intermittently divided in a short time by a 5-multivibrator circuit and a 4-pass relay unit, a certain sound range is emphasized by a 6 equalizer, a sound level difference of a specific sound source is measured, and a delay time is controlled. A 3D headphone stereo that is amplified by a plurality of AF amplifiers by means of a surround delay time correction circuit and is output to 17 3D headphone units composed of 3 speakers including 14 bone conduction speakers.
[Selection] Figure 1

Description

The present invention relates to a headphone stereo with improved reproduction of sound field movement.

An audio device with a tape recorder connected to headphones intended to improve sound quality and listen to good sound for individuals is intended for sound sources in which the sound field of the music software to be played is stationary. It was not suitable for perspective reproduction. Therefore, a surround circuit has been devised for playing a live sound source, but there is a problem in that it lacks clarity of realism.

An object of the present invention is to provide a 3D headphone stereo that can improve and reproduce the presence of stereo radio broadcasts and stereo sound sources as one of means for solving the above problems.

Select a specific sound range from a live sound source, measure the difference in sound level due to a slight time difference in the frequency of the sound range, call the perspective frequency from the ROM with an amount that changes the delay in surround time, and play it to the back of the head when playing it In addition to the provided bone conduction speaker, 3D headphones have been proposed that reproduce sound and output sound from a three-way speaker together with left and right speakers.

Further, it can be seen that the sense of depth changes in the three directions including the bone conduction speaker as compared with the left and right speakers, and the sense of depth changes when the time difference is changed.

Utility model registration No. 3174965

Means for solving the problem

Measures the frequency of a specific sound range of the audio input signal, divides it by a short time, and inputs a stereo broadcast or stereo sound source from the audio input signal using a means to surround delay by the delay time recorded in ROM from the sound level difference information The pulse oscillated from the multi-vibrator circuit enters the pass relay unit, repeats on / off of the pulse voltage to divide the sound of the sound source very quickly, picks up a specific range with an equalizer, and adds it to the surround delay time correction circuit Is.

On the other hand, the left signal input terminal and the right signal input terminal are divided into left and right signals by a left and right signal separation input circuit, amplified by the left and right amplifiers of the AF amplifier, and right and left reproduced sounds are output from the left and right speakers constituting the headphones.

The sound is amplified by the central AF amplifier through the surround delay time correction circuit, and the sound whose time difference is controlled from the bone conduction speaker can be heard from the back of the head by vibration.

Effect of device

According to the present invention, it is more realistic to add and reproduce the speaker sound source from the back of the head than to reproduce the sound from the left and right two speaker sound sources in the headphones, and at the same time, the 3D sound can be enjoyed with a better sense of movement by changing the surround delay time. Therefore, it is possible to easily enjoy live music with headphones using a method in which the stereo sound source is divided finely to detect the intensity of the sound and the delay time changes.

The wiring diagram of the 3D headphone stereo of the present invention. The figure of the whole structure of 3D headphone stereo of this invention. The figure of the surround delay time correction circuit including the bone conduction speaker.

Hereinafter, an embodiment of the invention will be described with reference to FIGS. FIG. 1 is a diagram illustrating wiring of a 3D headphone stereo. Reference numeral 1 denotes an input terminal (common part). An audio input signal is input to this input terminal (common part). On the other hand, a stereo audio signal enters the 2 left signal input terminal and the 3 right signal input terminal.

1 input terminal (common part) is connected to 7 left and right signal separation input circuit and 4 path relay part, and is connected to 5 multivibrator circuit. The 5-multivibrator circuit continuously oscillates a pulse wave to turn on and off the 4-pass relay unit to divide the time. 5 The oscillation frequency of the multivibrator circuit is a relatively high frequency. The 4-pass relay unit is connected to a 6 equalizer.

Both 2 left signal input terminal and 3 right signal input terminal are connected to 7 left and right signal separation input circuit. The 6 equalizer is connected to an 8 surround delay time correction circuit. The 7 left and right signal separation input circuits are connected to 9AF amplifier (left) and 10AF amplifier (right), which are dedicated amplifiers, respectively.

As a result, the 9AF amplifier (left) is connected to the 11 left speaker, and the 10AF amplifier (right) is connected to the 12 right speaker. Now you can hear stereo sound from the left and right.

The 8 surround delay time correction circuit is connected to a 14 bone conduction speaker via a 13 central AF amplifier. A shift that becomes a reverberant sound that reproduces the movement feeling of the front and rear sound images occurs, and the reverberant sound can be directly heard from the bone conduction vibration of the occipital region from the 14 bone conduction speaker.

The 8-surround delay time correction circuit is disclosed in Utility Model Registration No. 3174965, but the technique shown in FIG. 3 is used.

1 Input terminal (common part)
2 Left signal input terminal 3 Right signal input terminal 4 Pass relay section 5 Multivibrator circuit 6 Equalizer 7 Left / right signal separation input circuit 8 Surround delay time correction circuit 9 AF amplifier (left) section 10 AF amplifier (right) section 11 Left speaker 12 Right Speaker 13 Central AF amplifier 14 Bone conduction speaker 15 Headband 16 3D headphones Stereo body 17 3D headphones

Claims (2)

The path relay circuit is turned on and off with a pulse output from the multivibrator circuit, and the left and right signals are input to the AF amplifier and amplified by an equalizer that emphasizes and extracts a specific frequency in a short time. A 3D headphone unit including a bone conduction speaker provided in the center of the headband field measures a sound level difference using a slight time difference and outputs from a surround delay time correction circuit that controls the delay time from a ROM that determines the delay time. A 3D headphone stereo. It is characterized by connecting 3D headphones with a bone conduction speaker placed in the center of the headband through three AF amplifiers from an audio input signal, and resonating the low frequency range with a bone conduction speaker and listening in three directions. The 3D headphone stereo according to claim 1.

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