CN1061197C

CN1061197C - Integrated duct-type telephone transmitter and receiver with vibration acoustical pick-up device

Info

Publication number: CN1061197C
Application number: CN98106573A
Authority: CN
Inventors: 陈皞; 齐心理
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-10
Filing date: 1998-03-10
Publication date: 2001-01-24
Anticipated expiration: 2018-03-10
Also published as: WO1999046955A1; CN1193236A; AU2710399A

Abstract

The present invention relates to a hand-free integrated auditory type mouthpiece and earpiece device having a vibration acoustical pickup, which is used for mobile communication. The present invention comprises a casing 1, a voice processing circuit 2, a vibration pickup 3, a loudspeaker 4, a sound transmission cavity 5, and a lead 6. The present invention is characterized in that a sensor 32 arranged in the pickup 3 is provided with a balance weight device 321, the outer part of a pickup casing body 31 is provided with a convex vibration pick-up block 322; the inner wall of the sound transmission cavity 5 forms a resonance-proofing structure. The casing 1 is made of flexible material. The present invention has the advantages of strong noise-resisting power, simple structure, portability, etc.

Description

The integrated duct-type that has vibration pickup send, receiver

The present invention relates to a kind of telephone communication device, relate to more particularly that a kind of mobile communication uses, make it avoid that the portable integrated duct-type that has vibration pickup send, receiver.

In the high noise-reducing microphone that communication is used, common have several classes such as directional microphone and vibration-pickup type microphone.Wherein the operation principle of vibration-pickup type microphone is: when the people speaks, when vocal cord vibration is sounded, cause the vibration of tissue, the pick-up transducer picks up these vibrations as sound signal source.Because the vibration-pickup type transducer is insensitive to the sound wave in the ambient air medium, and only to the vibration sensing of the tissue that is in contact with it, therefore, the vibration sensing type microphone just has better anti-ambient noise ability, also avoided simultaneously common microphone to send howling, the i.e. problem of so-called " wind is cut sound " when air flows fast around.Common vibration-pickup type microphone has crown formula, Adam's apple formula, duct-type etc.Crown formula is that the pick-up transducer is placed on the first-class place of the helmet, picks up vibration signal with number of people top contact.Its all inconvenience impels people to design time eliminant microphone, and it is vibrating sensor to be pressed in to wait with an elasticity necklace tie to pick up vibration signal.The obvious deficiency of waiting the eliminant microphone then is to wear not attractive in appearancely, and necklace is oppressed the neck blood vessel for a long time and can be caused user's discomfort.

In order to overcome the deficiency of above-mentioned vibration-pickup type microphone, people have worked out the duct-type microphone, and it has solved the problems referred to above preferably, and can be integrated transmitter and receiver thus, make it can put into duct and go, too big to avoid the electrophone size, problem such as should not carry.The duct-type electrophone is not used widely in after appearance nearly ten years always, and its main cause is to fail to resolve the identification problem of sound, and very heavy audio mixing is arranged in the sound.Up in recent years, external practicality product is just arranged, the earphone of " being that ear is ad hoc " that be used for intercom that promptly Motorola Inc. sells emerges.The shell of this product adopts hard material, and the conduction that is beneficial to vibrate is convenient to pick up vibration signal.The pick-up transmitter is subsidiary sound treatment circuit completely, and self-powered.The effect one of circuit is filtering, to solve the bad problem of voice recognition; The 2nd, amplify, to solve the too weak problem of sensor output signal.In the sound transmission aperture of its loud speaker, be lined with flexible pipe, be used for the self-excitation problem of vibration damping when solving duplex.Though the appearance of this product is a very big progress, it still has some shortcomings.Because its whole casing all adopts hard material, so the vibration of different directions all can be passed on the transducer in the duct, and the vibration phase of different directions is differentiated, so will produce audio mixing, makes the voice recognition that obtains bad.Be head it off, existing product has adopted the way of processing of circuit, the medium and low frequency audio mixing is gone through harmful frequency range filter with high pass filter, only stays voice recognition medium-high frequency segment signal preferably.Do needing more complete treatment circuit like this, and will produce distortion inevitably, make tonequality send out point, unwarm.Simultaneously, can cause the problem of system's self-excitation when overcoming duplex, existing product adopts nested flexible pipe with vibration damping, but usually can hear echo, can produce howling when serious.Up to now, the problems referred to above are effectively solved as yet.

The objective of the invention is to overcome all deficiencies of prior art, the better duct-type of a kind of performance send, receiver and provide.

For achieving the above object, the invention provides that a kind of integrated duct-type that has vibration pickup send, receiver, it comprises a shell with detachable protheca that adapts with ear canal shapes, a sound treatment circuit, the vibration type pickup that the oscillatory type transducer that links to each other with holding wire is housed in housing, loud speaker, the transaudient chamber and the lead that link to each other with loud speaker is characterized in that:

A, described transducer are provided with a counterweight that amplitude is increased, and are provided with a convex vibration pick-up block that is used to pick up sound vibration signal in outside.

B, described shell are made by soft material.

Described counterweight is fixed on the strip transducer near the place, end.

Described vibration pick-up block, it can make one with housing, also can be fixed on the shell, and contact with housing.

Described sound treatment circuit is by a field effect transistor signal through the pick-up input to be carried out exporting after the impedance transformation.

Described protheca is that buckle-type is connected with shell.

The soft material that described shell is used is the silica type material.Preferably select silica gel for use.

Described housing is made by on-deformable hard material.

The present invention can be widely used in device for mobile communication such as hand phone, onboard mobile telephone and intercommunication.

By the foregoing invention scheme as can be known, the present invention is owing to utilize human body vibration to pick up as signal source, and do not experience airborne acoustic vibration, and whole casing is made by soft material, vibrating sensor is only obtained signal by vibration pick-up block from auditory canal wall, and other all and the duct contact position all be flexible material because flexible material has the vibration isolation effect, thereby obtained signal itself does not just produce audio mixing, there is not the phase place difference, therefore just do not need processing of circuit yet, so distortion is very little, tonequality reduction degree height, feel warm to the people, more do not have and dote on big auxiliary circuit, make whole apparatus structure compactness, and have good anti-ambient noise ability.The present invention makes one with electrophone, and can place duct, and is therefore simple in structure, is easy to carry, and need not any auxiliary circuit and just can reach the electrical characteristics of exchanging with electret microphone.Soft shell makes comfortable wearing, and the big or small duct of difference is had adaptability preferably.

Fig. 1 is an overall structure perspective view of the present invention.

Fig. 2 is a vibration type pickup structure chart of the present invention.

Fig. 3 is oscillatory type sensor construction figure of the present invention.

Fig. 4 is the preferred embodiments of the present invention sectional views.

Fig. 5 is the preferred embodiments of the present invention vertical view cutaway drawings.

Provide the preferred embodiments of the present invention below in conjunction with accompanying drawing.

In a preferred embodiment of the invention, the integrated duct-type that has vibration pickup gives, shown in the receiver structure accompanying drawing 5, accompanying drawing 6, in conjunction with the shown overall structure figure of Fig. 1 as can be known, the present invention includes shell 1, sound treatment circuit 2, vibration type pickup 3, loud speaker 4, transaudient chamber 5 and lead 6.Shell 1 selects for use the good silica gel of flexibility and intensity tool injection molded, its profile and people's ear canal shapes adapts, it is made up of housing main body 1 and protheca 11 two parts, is used to place each parts in the housing main body, and protheca is bending, so that catch on duct, make whole electrophone difficult drop-off, there is a phonate hole 111 the protheca end, and protheca is linked to each other by buckle 12 with shell, make overcoat to take off at an easy rate, so that clean owing to ear endocrine after the long periods of wear stops up the protheca phonate hole.As shown in Figure 1, sound treatment circuit 2, pick-up 3, loud speaker 4 longitudinally are arranged in the shell, can relative fixed for making each parts, and make shell be unlikely because of pressurized to be out of shape, in a preferred embodiment, adopt hard rubber that above-mentioned each component packages is fixing in the enclosure.The shell that fixes behind the above-mentioned parts is bonding at shell adhesive surface 13 places.In this example, sound treatment circuit 2 only adopts a field effect transistor to link to each other with pick-up 3 by holding wire 33, the voice signal through the pick-up input is carried out impedance conversion after lead 6 outputs by it.Vibration type pickup 3 is core components of the present invention, its structure as shown in Figure 2, it is to be fixed with oscillatory type transducer 32 by plastics fixed cover 34 in housing 31, housing 31 is made by on-deformable hard material, with conduction vibration more effectively, in a preferred embodiment, it is to be made by metal tube, transducer 32 structures as shown in Figure 3, it adopts commercially available double piezoelectric ceramic vibrating sensor, and its profile is strip, is bonded with the counterweight 321 that amplitude is increased in its both sides, end, this counterweight can adopt copper, metal materials such as steel, the other end end of transducer is connected with holding wire 33.Housing 31 outer close ends are welded with a convex vibration pick-up block 322 that is used to pick up sound vibration signal, and this vibration pick-up block adopts and above-mentioned housing 31 identical materials.Above-mentioned loud speaker 4 links to each other with communication terminal through lead, is connected with transaudient chamber 5 at phonate hole 41 places of loud speaker.

Claims

1, a kind of integrated duct-type that has vibration pickup that is applicable to mobile communication give, receiver, comprise a shell with detachable protheca (11) (1) that adapts with ear canal shapes, a sound treatment circuit (2), the vibration type pickup (3) that the oscillatory type transducer (32) that links to each other with holding wire (33) is housed in housing (31), loud speaker (4), transaudient chamber (5) that links to each other with loud speaker and lead (6) is characterized in that:

A, described transducer (32) are provided with a counterweight (321) that amplitude is increased, and are provided with a convex vibration pick-up block (322) that is used to pick up sound vibration signal in housing (31) outside.

B, described shell (1) are made by soft material.

2, the integrated duct-type that has vibration pickup according to claim 1 give, receiver, it is characterized in that described counterweight (321) is fixed in strip transducer (32) and goes up near the place, end.

3, the integrated duct-type that has vibration pickup according to claim 1 give, receiver, it is characterized in that described vibration pick-up block (322) can make one with housing (31), also can be fixed on the shell (1), and contact with housing (31).

4, the integrated duct-type that has vibration pickup according to claim 1 give, receiver, it is characterized in that described sound treatment circuit (2) is by a field effect transistor signal through pick-up (3) input to be carried out exporting after the impedance transformation.

5, the integrated duct-type that has vibration pickup according to claim 1 give, receiver, it is characterized in that described protheca (11) is connected for buckle-type with shell (1).

6, the integrated duct-type that has vibration pickup according to claim 1 give, receiver, it is characterized in that the soft material that described shell is used is the silica type material.

7, the integrated duct-type that has vibration pickup according to claim 1 give, receiver, it is characterized in that described housing (31) is made by on-deformable hard material.