RU2260254C2 - Sound-reproducing earphone device - Google Patents

Abstract

FIELD: acoustics.

SUBSTANCE: proposed device has two cases, each accommodating three electroacoustic transducers electrically interconnected to organize common electronic circuit affording reception and conversion of input signal including individual supply of converted signal to transducer inputs.

EFFECT: enhanced reliability of spatial sound reproduction at low cost of device.

9 cl

Description

The invention relates to acoustic transmission of information, namely, a headphone device that can be used in a home theater system. The author considers it possible to name this development "Duran-X".

Known home cinema systems, as a rule, contain an acoustic system for processing an audio signal with a distribution amplifier and speakers connected to it - a central one, two front and two rear speakers, which create the effect of a spatial sensation of sound presence in a particular audio video displayed on the screen TV or video projector (video monitor). For completeness of sensations it is recommended to place speakers at the level of the user's head. In this case, the center speaker, as a rule, reproduces only the low-frequency range, and the front ones are mainly high-frequency. Speakers can contain either one or several loudspeakers with different ranges of reproduced sound frequencies. From the player of sound information using input signal processing circuits, it is spatially separated into a background, front and center sound background reproduced by respective acoustic speakers. At the same time, the connection of home theater equipment can be either using wires or wireless.

The disadvantage of such acoustic equipment is its bulkiness and high cost. It is desirable to have a special room for its placement with appropriately selected acoustic characteristics.

It is known to use headphones with video equipment, in particular, some TV models are equipped with corresponding connectors. However, ordinary headphones, as a rule, contain one electro-acoustic transducer on each side, and the maximum that can be achieved is the stereo effect.

Known headphones containing several electrodynamic transducers for separate reproduction of the high, mid and low ranges, Japanese application No. 2003199187 with publication 11.07.2003, Japanese application No. 2001-218293 with publication 10.08.2001. However, these headphones have a number of disadvantages that do not allow them to be used for home theaters and playback of surround sound. The design of the headphones does not provide for the creation of a surround sound effect, there is no distribution of the signal between the speakers, except with the division into frequency ranges.

The basis of the proposed invention is the solution to the problem of developing high-quality headphones of a new generation, with the help of which it is possible to reproduce a spatial sound picture that would have a low cost compared to home theater speakers and at the same time be inferior to them in quality, be mobile and allow you to create high-quality sound a picture.

To solve this problem, a headphone device for reproducing Duran-X sound has been proposed, comprising a left and right body, having front and rear parts, and mechanically interconnected by a jumper to allow placement with positioning relative to the user's auditory openings. Moreover, each case includes at least three electro-acoustic transducers placed equidistant from each other and at a certain distance relative to the front of the case, which has many openings for sound output. In addition, the electro-acoustic transducers in each of the cases are electrically connected to a common electronic circuit that provides reception and conversion of the input signal with its distribution to the transducers according to a predetermined program that provides amplitude-frequency and / or phase-frequency and / or temporary separation of the input signal with individual supply of the converted input signal to the inputs of the converters. The inputs of each circuit are adapted to receive an input signal from a carrier and / or source of audio information.

The electronic circuit provides spatial separation of the input signal when reproducing the converted input signal on the transducers, at least to the leading edge of the sound field, the trailing edge of the sound field and the central front of the sound field. The electronic circuit can be performed on the basis of a semiconductor chip or chip, i.e. in the form of a digital signal processing device. The electronic circuit contains a digital-to-analog converter. In particular, the electronic circuit can be performed on the basis of well-known circuits used in home theater equipment to distribute signals between loudspeakers in order to create a picture of spatial surround sound. This eliminates the need for amplifiers. A sufficient circuit for pre-processing an audio signal performed directly in sound reproducing equipment, for example, a DVD player, is adapted to convert a signal from an information medium and supply it to the proposed headphone device according to a given spatial spatial distribution program.

In this case, membrane-type electroacoustic transducers can be used. Electro-acoustic transducers can be located at the vertices of an equilateral triangle. The headphone device may also contain four transducers, mounted respectively at the bottom, top and sides of the housing for greater coverage of the exposure area. There may be more transducers, for example, installed around the entire perimeter of the front of the housing. The earphone housing is made on the basis of well-known technologies in order to eliminate adverse effects on the user and create maximum comfort.

In the modern market for goods, there is no offer of such audio equipment. The proposed device allows you to connect several users, if you have the appropriate equipment, by analogy with individual listening movie theaters. At the same time, individual adjustment of sound characteristics for a specific user is possible. There is no extraneous interference, creates a "complete immersion" in the picture of what is happening. There is no need to choose the optimal listening position. You can also use wireless headphones and playback system. The electronic circuit can be programmed to any digital sound processing system to create the effect of spatial surround sound, for example, Dolby. Headphones can be used both with home theater systems, and with video games, a computer, in music centers and systems.

Claims (9)

1. A headphone device for reproducing sound, comprising left and right housings having front and rear parts and mechanically connected to each other by a jumper to enable placement with positioning relative to the auditory apertures of the user, each housing comprising at least three electro-acoustic transducers placed equidistant from each other and at a certain distance relative to the front of the case, which has many holes for sound output, in addition, electroacoustic The static converters in each of the housings are electrically connected to a common electronic circuit that provides reception and conversion of the input signal with its distribution to the converters according to a predetermined program that provides amplitude-frequency and / or phase-frequency and / or temporary separation of the input signal with individual supply the converted input signal to the inputs of the converters, while the inputs of each circuit are adapted to receive an input signal from a carrier and / or source of audio information. 2. The device according to claim 1, in which the electronic circuit provides a spatial separation of the input signal when playing the converted input signal on the transducers, at least to the leading edge of the sound field, the trailing edge of the sound field and the central front of the sound field. 3. The device according to claim 1, in which the electronic circuit is made on the basis of a semiconductor chip or chip. 4. The device according to claim 1, in which the electronic circuit is made in the form of a digital signal processing device. 5. The device according to claim 1 or 4, in which the electronic circuit contains a digital-to-analog converter. 6. The device according to claim 1, characterized in that the electro-acoustic transducers of the membrane type are used. 7. The device according to claim 1, in which the electro-acoustic transducers are essentially located at the vertices of an equilateral triangle. 8. The device according to claim 1, characterized in that it contains four transducers. 9. The device according to claim 8, characterized in that the converters are installed respectively at the bottom, top and sides of the housing.