CN204104094U - A kind of Novel microphone - Google Patents

Abstract

Novel microphone of the present utility model, comprises microphone, comprises audio air vibration receiver and amplifier; Audio air receiver comprises at least one bass horn and/or at least one mediant trumpet and/or at least one loudspeaker, described bass horn, mediant trumpet, loudspeaker are connected in parallel to each other, and give amplifier for mixing after the transform acoustical signals collected is become the signal of telecommunication; Amplifier, for amplifying the described signal of telecommunication.Due to the coil of loudspeaker, the structural design of vibrating membrane, the design of material selection and gain amplifier, make loudspeaker sensitive to sound wave induction, but hunting speed is steady, and it is also comparatively strong to the capacity gauge of sound wave, and amplifying power is also higher.So using loudspeaker of the prior art as audio air vibration receiver can solve sound source too far away or too close from microphone time the problem brought; Mouth sounds, by affecting with the distance of microphone, can use in 5cm-200cm radius, and output sound is level and smooth and close to primary sound after reduction.

Description

A kind of Novel microphone

[technical field]

This patent relates to electronic technology field, is specifically related to a kind of Novel microphone voice signal being converted to the signal of telecommunication.

[background technology]

Microphone is the device of the signal of telecommunication sound transitions, Fig. 2 is moving-coil microphone structural map, it utilizes electromagnetic induction phenomenon to make, when sound wave makes metallic membrane vibrate, be connected to coil (being also voice coil loudspeaker voice coil) on diaphragm along with vibrating together, voice coil loudspeaker voice coil vibrates in the magnetic field of permanent magnet, wherein just produce induced current (signal of telecommunication), faradic size and Orientation all changes, amplitude and the frequency of change are determined by sound wave, this signal code passes to loud speaker after loudspeaker amplifies, and just sends the sound of amplification, as Fig. 1 from loud speaker.

Various forms of meeting, speech, concert, especially the giving lessons of teacher, all be unable to do without microphone.Microphone also claims pick-up, and voice signal is converted to the signal of telecommunication by microphone, and the signal of telecommunication amplifies through sound amplifier, is reduced into audio signal by loudspeaker, reaches the object of voice emplifying.Speaker needs in the face of microphone, and to make oral area and microphone maintain a certain distance, there to be good acoustical quality, general oral area is (5-30) cm from the distance of microphone, and desk type microphone can reach 80cm.Hand microphone, can limit the both hands of speaker with the auxiliary content annotating speech of action expression; Even desk-top or stent-type fixes microphone, although temporarily liberated the both hands of speaker, the same with hand microphone existed following shortcoming:

1., when the distance of oral area and microphone shortens, if the whole volume switch of unmanned hand adjustment, sound amplifier can export on instantaneous peak, sound amplifier overpower protection can be caused, even burn out sound amplifier, a voice peak can be produced simultaneously, serious stimulation can be produced to ear, affect on-the-spot atmosphere;

2. when the distance of oral area and microphone becomes far away, the sound vibration signal energy collected because of microphone diminishes, and cause the signal of telecommunication supplying sound amplifier to diminish, sound amplifier exports not enough, causes little sound or noiseless, also impact speech effect.

And wireless microphone on the market, on miniature be contained in ear side or the hem, though solve the contradiction of the spacing of oral area and microphone, make the function steady operation that amplifies, but because of its power supply employing battery, the speech of hour can consume the electricity of a 9V dry cell, in the speech process that the duration is more of a specified duration, battery to be changed frequently, if dry cell, also can produce pollution; If rechargeable battery, prepare many charged batteries or change battery all can bring loaded down with trivial details workload, the wireless launcher be simultaneously hidden in it makes speaker be in the stronger electromagnetic radiation of power, also forms potential threat to the healthy of speaker.

[summary of the invention]

In order to solve the problem, the utility model provides a kind of Novel microphone.

The utility model adopts following technical scheme, structure microphone, comprises audio air vibration receiver and amplifier; Audio air receiver comprises at least one bass horn and/or at least one mediant trumpet and/or at least one loudspeaker, described bass horn, mediant trumpet, loudspeaker are connected in parallel to each other, and after audio air receiver is used for that the transform acoustical signals collected is become the signal of telecommunication, amplifier is given in mixing; Amplifier, for amplifying the described signal of telecommunication.

Preferably, described amplifier is tone currents amplifier, and described tone currents amplifier is coiling transformer or electron-amplifier.

Preferably, the housing of described microphone is square or cuboid or spheroid.

Preferably, described microphone is fixed or portable.

The Advantageous Effects of this patent is:

1., due to the coil of loudspeaker, the structural design of vibrating membrane, the design of material selection and gain amplifier, make loudspeaker sensitive to sound wave induction, but hunting speed does not have microphone fast, and it is also comparatively strong to the capacity gauge of sound wave simultaneously, and amplifying power is also higher.So under the motionless prerequisite of sound amplifier volume control button, when the distance of sound source and microphone becomes far away, output volume is constant, can not noiseless or little sound; Mouth sounds by affecting with the distance of microphone, can normally not use in 5cm-200cm radius, and output sound is level and smooth and the rear fidelity of reduction is very high.

2., owing to forming the vibrating membrane of the loudspeaker of microphone, generally adopt paper disc, have good intensity and thickness, not easily excited rear intense oscillations by sound wave, be in smooth reception oscillatory regime all the time, stable tone currents can be exported for sound amplifier.When sound source is suddenly close to microphone, sound amplifier can not be made to export because of voice spike, power burst and make the action of sound amplifier overpower protection, protection sound amplifier.

3. when having shelter in the middle of sound source and microphone, according to the data in embodiment, the variable quantity that loud speaker exports relative to sound source is not obvious, and be therefore particularly suitable for the writing on the blackboard limit explanation on blackboard of the person of giving lessons limit, save time, effect of giving lessons is good; The person that do not give lessons activity can not affect the output of microphone within the specific limits yet, has greatly liberated the both hands of the person of giving lessons.

[accompanying drawing explanation]

Fig. 1 moving-coil microphone structural representation of the prior art;

Fig. 2 acoustic conversion device structural representation of the prior art;

Novel microphone in Fig. 3 embodiment one loudspeaker, a mediant trumpet, the circuit theory diagrams that a bass horn is connected in parallel to each other;

The circuit theory diagrams be connected in parallel to each other of the loudspeaker of the Novel microphone in Fig. 4 embodiment one and a mediant trumpet;

Novel microphone in Fig. 5 embodiment one is high, in, low three loudspeaker are independent use circuit theory diagrams wherein;

Figure of description description of symbols:

1-microphone; 2-loudspeaker; 3-loud speaker; 4-metallic membrane; 5-voice coil loudspeaker voice coil; 6-magnet; 7-loudspeaker; 8-mediant trumpet; 9-bass horn; 10-amplifier.

[embodiment]

Be described in detail below in conjunction with the execution mode of drawings and Examples to this patent.

Embodiment one:

Novel microphone in the present embodiment, comprises housing and microphone circuit, and housing can be various profiles attractive in appearance, such as the cuboid of rounding and square, spheroid, spheroid, and housing is provided with the hole of directly propagating for sound, and microphone circuit is located in housing.Described microphone circuit comprises audio air vibration receiver and amplifier, audio air vibration receiver can be at least one loudspeaker, the mediant trumpet of at least one, the parallel circuits of the bass horn of at least one, also can be the loudspeaker of at least one, the mediant trumpet of at least one, at least one the bass horn wherein parallel circuits of any two kinds also can be at least one loudspeaker or mediant trumpet or bass horn.Audio air vibration receiver is used for the voice signal collected being converted to signal of telecommunication mixing and gives amplifier.The output of audio air vibration receiver connects the input of amplifier, and the signal of telecommunication that audio air oscillator exports by amplifier amplifies for loudspeaker.Amplifier is tone currents amplifier, can be coiling transformer or electron-amplifier.Audio electrical signal after amplification for loudspeaker, therefore can be designed to fixed installation mode microphone or portable microphone by transmitting set.

Loudspeaker (also claiming loud speaker) and microphone to realize principle identical, it is to the conversion of sound inverse process each other.Coil and the vibrating membrane of microphone employing of the prior art are very sensitive to the induction of sound wave, as long as vibrating membrane receives sound wave, vibrating membrane can with very fast velocity fluctuation, so easily occur sound source from microphone become close to time sound wave spike phenomenon, vibrating membrane collects the ability of sound again, easily occurs noiseless or little voice phenomenon when sound source is away from microphone; But loudspeaker of the prior art compared to existing technology in microphone, it is at coil, the structural design of vibrating membrane, and gain amplifier designs, the selection of material is all different, loudspeaker are the same with microphone, sensitive to sound wave induction, but hunting speed does not have microphone fast, simultaneously because the structure of vibrating membrane is different with material, it is also comparatively strong to the capacity gauge of sound wave, and amplifying power is also higher, is also unlikely to occur noiseless or little voice phenomenon when sound source is away from microphone; The vibrating membrane of loudspeaker, generally adopts paper disc, has good intensity and thickness, not easily excited rear intense oscillations by sound wave, be in smooth reception oscillatory regime all the time, stable tone currents can be exported for sound amplifier, when close to sound source becomes suddenly from the distance of loudspeaker, avoid the output of voice spike.If loudspeaker, mediant trumpet, bass horn is in parallel, fully gathers the sound wave of different frequency range in sound wave and changes, can be the most perfect close to primary sound after loud speaker reduction, and distortion almost allows people's ear imperceptible.

A loudspeaker, a mediant trumpet, when the Novel microphone of a bass horn parallel connection changes in different range, the comparison of loud speaker output sound value, here is as follows in the experimental data of Noise laboratory:

The foregoing is only the preferred embodiment of this patent, be not limited to this patent, for a person skilled in the art, this patent can have various modifications and variations.Within all spirit at this patent and principle, any amendment done, equivalent replacement, improvement etc., within the protection range that all should be included in this patent.

Claims (4)

1. a Novel microphone, is characterized in that, comprises audio air vibration receiver and amplifier;

Audio air receiver comprises at least one bass horn and/or at least one mediant trumpet and/or at least one loudspeaker, described bass horn, mediant trumpet, loudspeaker are connected in parallel to each other, and after audio air receiver is used for that the transform acoustical signals collected is become the signal of telecommunication, amplifier is given in mixing;

Amplifier, for amplifying the described signal of telecommunication.

2. as the Novel microphone in claim 1, it is characterized in that, described amplifier is tone currents amplifier, and described tone currents amplifier is coiling transformer or electron-amplifier.

3. as Novel microphone arbitrary in claim 1 or 2, it is characterized in that, the housing of described microphone is square or cuboid or spheroid.

4. as Novel microphone arbitrary in claim 1 or 2, it is characterized in that, described microphone is fixed or portable.