CN2250612Y

CN2250612Y - Microphone with wave trap

Info

Publication number: CN2250612Y
Application number: CN 96209446
Authority: CN
Inventors: 陈坚胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-26
Filing date: 1996-05-26
Publication date: 1997-03-26
Anticipated expiration: 2006-05-26

Abstract

The utility model relates to a microphone with a wave trap, which is composed of a casing, a diaphragm, a voice coil and an output wire holder, wherein, the a end and the b end of the output wire holder of the microphone are connected in parallel with a passive two-terminal network device wave trap. Adopting the structure of the utility model can eliminate the inherent resonance peak frequency point of the static work amplitude frequency curve of an existing microphone (transmitter) and cause the work frequency response curve of the microphone to tend to be smooth, and thus, on the basis of low cost and simple circuit, the utility model improves the performance characteristics of the microphone, overcomes the whistler when the signal is strong and enhances the playing quality.

Description

The microphone (microphone) of band trapper

A kind of microphone with trapper (microphone) relates to the improvement of microphone structure.

Microphone, the people claims microphone, all is by magnetic core, voice coil loudspeaker voice coil and vibrating diaphragm are formed, and produce the signal of telecommunication by acoustic vibration, thereby finish the conversion of sound one electricity.Because between the vibrating diaphragm and voice coil loudspeaker voice coil of microphone, its mechanical quality is different with coefficient of elasticity, thereby produces the humorous peak of certain resonance inevitably in sound one electric transfer process, as shown in Figure 1, thereby audio distortions when causing by microphone broadcast performance, pickup tonequality is unsatisfactory.For a long time, people have done many effort for the pickup quality of reform microphone, as strengthening the mechanical damping of vibrating diaphragm or voice coil loudspeaker voice coil, thereby reduce or reduce humorous peak of its resonance or peak value, and unsmooth curve is improved.But because after mechanical damping strengthened, the vibration sensitivity of voice coil loudspeaker voice coil can descend thereupon, like this, can produce again that due off beat is not enough to promote the vibrating diaphragm vibration in the source of sound, thereby weaken the phenomenon of the output of off beat matter, cause new distortion.Therefore, the pickup quality of microphone (microphone) is still the people's attention focus so far.

The purpose of this utility model, be to provide a kind of ameliorative measure and technical scheme to microphone, the vibrating diaphragm and the highly sensitive voice coil loudspeaker voice coil of pickup that both can keep original strong vibration, can effectively reduce or eliminate the humorous peak of vibration intrinsic in the microphone again, make the smooth-out state of amplitude-versus-frequency curve of pickup, the sound quality of improvement sound one electricity conversion is eliminated the howling that humorous peak produces.

The utility model is to implement like this: in the microphone of being made up of shell 1, vibrating diaphragm 2, voice coil loudspeaker voice coil 3, connector socket 4 (microphone), between a, the b of its output connection socket 4 end, passive two-terminal network trapper 5 that is composed in series by inductance L, resistance R, capacitor C of access in parallel, this trapper 5 can be formed a resonant tank by discrete component, also can be solidified into an element.

Below in conjunction with accompanying drawing in detail, structure of the present utility model and principle are described in detail:

Fig. 1 is the quiescent operation amplitude frequency curve schematic diagram of conventional microphone (microphone);

Fig. 2 is microphone described in the utility model (microphone) structural representation;

Fig. 3 is and is connected to the microphone line map of a plurality of trappers.

As shown in Figure 1, conventional microphone (microphone) is owing to previous reasons, and distinct program all has the humorous peak of more than one resonance (or humorous paddy), causes its microphone (microphone) to produce distorted signal in the electric transfer process of uttering a word, and effect is performed in a radio or TV programme in influence.

For this reason, the utility model as shown in Figure 2, in the microphone of being made up of shell 1, vibrating diaphragm 2, voice coil loudspeaker voice coil 3, output connection seat 4 (microphone), between a, the b of the output connection socket 4 of microphone end, the passive two-terminal network device trapper 5 that inserts in parallel is formed.Wherein, trapper 5 as shown in Figure 3, can be by the discrete component inductance L, resistance R, capacitor C is composed in series a resonant tank, also can be solidified into a device to these three elements, three element L in adjusting trapper 5 respectively, R, the numerical value of C, make trapper form a very little resistance corresponding to the humorous peak frequency on the microphone working curve, just the energy absorption at the humorous peak (or humorous paddy) that causes owing to its mechanical structure in the microphone (microphone) is fallen, thereby suppressed the existing humorous peak of microphone effectively, make the work amplitude frequency curve of microphone smooth-out, shown in the dotted line among Fig. 1, improved the pickup quality harmony one electric conversion quality of microphone.

In actual use, because the microphone that has is because of the difference of product material, the quality of structure, might produce a plurality of humorous frequencies, under these circumstances, can be as shown in Figure 3, at a, the b of the output connection seat 4 of microphone end, and being connected with a plurality of trappers 5, the resonance frequency of each trapper all each the humorous frequency with microphone is corresponding, like this, different humorous peaks is just absorbed by different trappers, make the working curve of microphone smooth-out, improved the sound one electric conversion quality of microphone, the howling that occurs when erasure signal is strong.

Adopt the microphone of structure described in the utility model, simple in structure, cost is low, can fundamentally improve the quiescent operation amplitude frequency curve of microphone, eliminate intrinsic bad humorous peak in the curve, can also bring up to a new quality height to the microphone of equal electroacoustic standard, improve and perform in a radio or TV programme tonequality.

Claims

1, a kind of microphone with trapper, form by shell (1), vibrating diaphragm (2), voice coil loudspeaker voice coil (3), output connection seat (4), it is characterized in that passive two-terminal network device trapper (5) that is composed in series by inductance L, capacitor C, resistance R of a, b end access in parallel at the output connection seat (4) of microphone.

2, band trapper microphone according to claim 1 is characterized in that said trapper (5) also can be connected into resonant tank by discrete component inductance L, capacitor C, resistance R and form.

3, the microphone of band trapper according to claim 1, it is characterized in that can be at a, the b of said microphone output connection seat (4) the end trapper (5) that inserts more than two in parallel.