JP2006222877A - Voice transmission device and voice transmitting and receiving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a voice transmission device which surely transmits a voice to an opposite party even if talking is performed in a small voice and does not cause troubles around because the voice is interrupted by a mask so as to be hardly leaked to the outside even if the talking is performed in a loud voice. <P>SOLUTION: The voice transmission device incorporates a transmitter attachable and detachable to/from electronic equipment in the mask. The mask has a double structure provided with an air path between an outer case and an inner case, wherein an inner case air opening is formed in the inner case and an outer case air opening is formed in the outer case, respectively. The mask is made of an airtight material or structured so that the voice of a talker is hardly leaked to the outside. A porous material is provided at the inner surface of the mask. The mask is provided with a piezoelectric transducer for transducing the voice of the talker into electric energy, and the electric energy generated by the piezoelectric transducer is consumed or used to drive an electric element to reduce/mute the voice. A reverse-phase voice is sent into the mask to offset the voice of the talker in the mask. Further, this voice transmitting and receiving device is provided with an earphone type or a headphones type receiver which is put into ears, so that a user can listen to the received voice of voice communication equipment. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a voice transmitting device that prevents a speaker's voice from leaking to the surroundings when performing voice input to an electronic device such as a mobile phone or a personal computer, and a voice transmitting / receiving device to which a receiver is added. .

  When inputting voice to an electronic device such as a mobile phone or a personal computer, the user actually makes a voice input to the transmitter, but the voice of the user's spoken voice spreads to the surroundings. Was. In particular, when using a mobile phone, when talking on the train or in the vicinity of other people, the speaker's voice could be heard by the people around him, which was annoying and discomforting the people around him. For this reason, the actual situation is calling on the use of mobile phones in trains and meetings.

  Soundproofing and silencing devices have been developed in order to prevent other people from annoying the spoken voice even when talking using a mobile phone. For example, an auxiliary device for conversation has been developed in which one end is connected to a mobile phone and a mask is connected to the other end of an elastic cord (Patent Document 1). This auxiliary tool covers the speaker's mouth with a mask and physically shields the voice to prevent diffusion to the surroundings.

JP 2001-53846 A.

The auxiliary tool disclosed in Patent Document 1 has the following problems.
(1) Even if you cover your mouth with a mask, your voice will inevitably leak to the outside, so even if you cover it with a mask, you must speak with a lower voice, or speaking with a small voice makes it difficult for the other party to hear you. There's a problem.
(2) Since it is difficult to hold the mask near the mouth, it is inconvenient.

  The voice transmitting / receiving device and the voice transmitting / receiving device of the present invention, even when speaking with a voice of the same magnitude as normal conversation, the voice is hardly leaked to the outside, the surroundings are not disturbed, and the other party can hear. It is designed to make it easier to talk.

  The voice transmitting apparatus of the present invention has a transmitter built in a mask that can be attached to and detached from an electronic device such as a mobile phone or a personal computer. The mask has a double structure with an air passage between the outer shell and the inner shell. The inner shell has an inner vent that communicates with the vent from the mask, and the outer shell has an outer vent that communicates with the vent from the outside. The vent was opened. The mask is made of an airtight material and / or structure that prevents the voice of the speaker from leaking outside. A porous material was provided on the inner surface of the mask. The mask may be provided with a piezoelectric transducer for converting the voice of the speaker into electrical energy, and the electrical energy generated from the piezoelectric transducer may be consumed or the electrical element may be driven thereby to mute / mute the speech. A receiver for receiving the voice of the speaker in the mask, a controller for generating a voice having a phase opposite to that of the voice based on the voice from the receiver, and a speaker for sending the reverse phase voice from the controller into the mask Thus, the speech of the speaker in the mask can be canceled by the antiphase speech sent into the mask.

  The voice transmitting / receiving apparatus according to the present invention includes an earphone-type or headphone-type receiver that is attached to an ear and can listen to a reception sound of an electronic device.

The voice transmitter according to the present invention has the following effects because the transmitter is built in a mask that hardly leaks voice to the outside.
(1) Even when speaking with a small voice, the voice is reliably transmitted to the other party, and the other party's voice is not difficult to hear.
(2) Even if the voice is loud, the voice is blocked by a mask and is not easily leaked to the outside.

The voice transmitting apparatus according to claim 2 of the present invention has the following effects in addition to the above effects.
(1) Since the mask has a double structure with an air passage between the outer shell and the inner shell, the voice in the mask, particularly the low frequency to middle frequency voice, is blocked by the air passage and attenuated (reduced). Sound) and less likely to leak outside.
(2) Since the outer air vent that communicates with the air passage from the outside is opened in the outer shell, air is sucked into the mask from the outer vent and the breathing does not occur even if the voice is transmitted while wearing the mask. .
(3) Since the inner vent opening communicating with the ventilation path from the inside of the mask is opened in the inner shell, the air in the mask is discharged to the outside, and the inside of the mask is kept clean.

  In the voice transmitting device according to claim 3 of the present invention, since the mask is an airtight material or / and structure in which the voice of the speaker is difficult to leak to the outside, in addition to the above effects, There is also an effect that the voice is more difficult to leak to the outside.

  Since the voice transmitting device according to claim 4 of the present invention is provided with the porous material on the inner surface of the mask, the voice of the speaker's speaking voice, particularly the high frequency voice is absorbed and attenuated (sound reduced) by the porous material, There is also an effect that it is difficult to leak outside.

  According to a fifth aspect of the present invention, there is provided a voice transmitting device according to the present invention, wherein a mask is provided with a piezoelectric transducer that converts a speaker's voice into electric energy, and electric energy generated from the piezoelectric transducer is consumed or an electric element is driven thereby Since the sound can be reduced / muted, the sound can be reduced / muted efficiently.

  The voice transmitting apparatus according to claim 6 of the present invention includes a receiver that receives a voice of a speaker in a mask, a controller that generates a voice having a phase opposite to that of the voice based on the voice from the receiver, A speaker that sends the reverse phase sound from the controller to the air passage is provided, and the voice of the speaker in the air passage can be canceled by the reverse phase sound sent to the air passage. .

Since the voice transmitting / receiving apparatus according to claim 7 of the present invention includes the earphone type or headphone type receiver that is attached to the ear and listens to the reception sound of the electronic device, the following effects can be obtained in addition to the above effects. is there.
(1) Since the handset can be worn on the ear during a call, it is easy to make a call.
(2) Even a small received voice can be heard sufficiently.

(Embodiment 1)
One example of an embodiment of the voice transmitting apparatus and the voice transmitting / receiving apparatus of the present invention will be described in detail with reference to FIGS. In the present embodiment, a case where a mobile phone is used as an electronic device capable of voice input will be described. The electronic device is not limited to a mobile phone, and an arbitrary device such as a stationary phone, a videophone device, a personal computer capable of inputting voice, a game machine, or the like can be used. As shown in FIGS. 1A and 1B, the voice transmitter / receiver (hereinafter referred to as “transmitter / receiver”) includes a receiver 2 for listening to voice received by an electronic device (cellular phone) 1; A mask 3 capable of covering the mouth or / and the nose and a transmitter (for example, a microphone) 4 built in the mask 3 are provided. The receiver 2 is of a headphone type, and includes a mounting tool 5 that connects two receivers 2 for the left and right ears, and can attach the left and right receivers 2 to the ears over the head and neck. The mobile phone 1 is connected to the mobile phone 1 so that the received sound can be heard. The microphone 4 is connected to the mobile phone 1 by the cable 6 wired in the mounting tool 5 so that sound can be transmitted to the mobile phone 1 through the microphone. Connection of the cable 6 to the mobile phone 1 can be performed, for example, by inserting a jack attached to the end of the cable 6 on the phone connection side into a terminal for headphones with a microphone provided in the mobile phone.

  The handset 2 and the wearing tool 5 can be of any type, such as an earphone type headphone type or an earphone type. Moreover, it is also possible to provide only one receiver 2 so that the receiver 2 can be attached to only one ear. The receiver 2, the mounting tool 5, and the cable 6 of this embodiment are folded so that they can be accommodated in the mask 3. In the present invention, the handset 2 and the mask 3 can be directly attached to the mobile phone 1 without using a cable.

  The mask 3 is formed in a size that can cover the mouth as shown in FIGS. 1 (b) and 2 (b). It is desirable that the shape and size of the mask 3 be closely attached to the periphery of the mouth when worn from the viewpoint of sound reduction. The shape and size of the mask 3 are not limited to the shape and size that can cover the mouth, but can be the shape and size that can cover both the mouth and the nose, or other shapes and sizes. The mask 3 can be made of any material, but can be made of an airtight material that hardly leaks the speaker's voice to the outside, such as resin, rubber, leather, or the like.

  As shown in FIG. 2 (b), the mask 3 has an inner shape 8 similar to the outer shape 7 and smaller in size than the outer shape 7. The mask 3 is ventilated between the outer shape 7 and the inner shape 8. It has a double structure with a path 11, and an outer vent 9 that opens to the outside at the lower outer peripheral edge of the outer shell 7 and communicates with the vent path 11 opens into the mask 3 at the upper inner peripheral edge of the inner shell 8. Thus, the inner shell vents 10 communicating with the vent passages 11 are opened. By providing the outer vent 9 on the lower side and the inner vent 10 on the upper side, the air passage 11 is lengthened, and the sound that passes from the inner vent 10 to the outer vent 9, in particular, low frequency to mid frequency. Is easy to attenuate (decrease). The number of outer shell vents 9 and inner shell vents 10 can be any number.

  As shown in FIG. 2B, the transmitter 4 is attached to the inner lower portion of the inner shell 8 of the mask 3. The transmitter 4 is a microphone or other type capable of inputting voice. The transmitter 4 is connected to the mobile phone 1 by the cable 6 as described above so that the voice of the speaker wearing the mask 3 can be input to the mobile phone 1. The mounting position of the transmitter 4 can be set to any position as long as the voice of the caller can be easily input.

  As shown in FIG. 2B, a porous sheet 13 is provided inside the inner shell 8 of the mask 3 to facilitate attenuation (sound reduction) of sound, particularly high-frequency sound. The porous sheet 13 can be made of a material that easily attenuates (reduces) high-frequency sound, such as glass fiber or sponge. The sheet 13 can be made of any material as long as it has sound absorption. In this case, it may have not only a sound absorbing property but also a deodorizing property, an antibacterial property and the like.

As shown in FIG. 3, parallel plate-shaped piezoelectric elements (piezoelectric transducers) 14 are provided on the front and back surfaces of the inner surface 8 of the mask 3 and the outer surface 7 of the outer surface 7, respectively. In response to this, electric energy is generated, and the voice is converted into electric energy so that the speaker's voice can be silenced (attenuated). As the piezoelectric element used as the piezoelectric transducer, a polymer material or a paint material can be used. When these are used, they can be mounted on a surface having a shape that cannot be mounted by a parallel plate piezoelectric element. Further, as the piezoelectric transducer, a piezoelectric speaker 15 can be used as shown in FIG. In this case, the piezoelectric speaker 15 is vibrated by sound pressure to generate electrical energy. The piezoelectric speaker 15 has the advantages of high efficiency, light weight, and thinness compared to the electromagnetic speaker. When using any of the piezoelectric transducers of the piezoelectric element and the piezoelectric speaker, the sound energy is consumed and the sound is attenuated by generating electrical energy by vibrating them with sound. The generated electrical energy is consumed or used effectively. There are various consumption methods and utilization methods, for example, the following methods.
(1) A method in which a resistor R is connected to the piezoelectric transducer 14 and electric energy generated from the piezoelectric transducer 14 is consumed by the resistor R as shown in FIG.
(2) As shown in FIG. 6, a receiving drive element (for example, an LED or other electronic element) 16 is connected to the output side of the piezoelectric converter 14, and the electric energy generated from the piezoelectric converter 14 is used as a drive power supply for the LED. Is turned on (driving the receiving drive element 16) and consumed.
(3) As shown in FIG. 7, a rectifier circuit 17 and a storage capacitor C are connected in parallel to the piezoelectric converter 14, and electric energy generated from the piezoelectric converter 14 is rectified by the rectifier circuit 17 to be stored in the storage capacitor C. A method of storing electricity and using the stored electricity as regenerative energy as a power source for the mobile phone 1 or the like. In this case, if the sound is input for a long time, the amount of stored electricity increases to a practical level.

(Embodiment 2)
Another example of the embodiment of the voice transmitting / receiving device and the voice transmitting / receiving device of the present invention will be described in detail with reference to FIGS. Also in this embodiment, a case where a mobile phone is used as an electronic device capable of inputting voice will be described. In the transmitter / receiver of the embodiment shown in FIG. 8, the transmitter 3 such as a microphone is built in the mask 3, and the mask 3 has a double structure of the outer shell 7 and the inner shell 8, and an air passage 11 is provided between them. 3 is the same as the voice transmitting / receiving apparatus of FIG. 3 in that the outer shell 9 is opened in the outer shell 7 and the inner vent 10 is opened in the inner shell 8. The difference is that a small speaker 20 is provided in communication with the air passage 11 on the outer front surface of the outer shell 7 of the mask 3, and a second microphone (audio measurement sensor) 21 is provided on the outer air vent 9 side of the air passage 11. That is. In this transmitter / receiver, the voice is sensed by the transmitter 4, the volume is measured by the controller 22 (FIG. 9), a sound having a phase opposite to that of the voice is generated from the controller 22, and the sound is transmitted to the small speaker 20. Is radiated into the air passage 11 to cancel the sound in the air passage 11. The sound emitted from the outer vent 9 is detected by the second sound microphone 21 and measured by the controller 22 so that the controller 22 can update the control parameter setting so that the sound detected by the second microphone 21 is reduced. It is. The reason why the small speaker 20 is attached to the air passage 11 in such a direction that the sound can be sent is because the sound is difficult to disperse in the air passage 11, so that the sound can be efficiently canceled (in order to improve the silencing effect). In addition, the sound is generated in the mask 3 in consideration of the processing time from when the voice is sensed by the transmitter 4 to when the controller 22 generates a sound having a phase opposite to that of the voice and to be emitted by the small speaker 20. The sound can be radiated by the small speaker 20 when the sound just passes through the air passage 11. The small speaker 20 can be attached at any position as long as sound can be sent into the air passage 11. The controller 22 has a power source. As this power source, it is desirable that an external battery different from the power source of the mobile phone 1 is used and not shared with the power source of the mobile phone 1. Since the controller 22 and the power supply become heavy, it is preferable to provide the controller 22 and the power supply outside the mask 3 separately from the mask 3. However, the controller 22 and the power supply can be reduced in size and weight and provided inside the mask 3.

(Other embodiments)
In the present invention, the receiver can be omitted and used as a voice transmitter.

  The transmission / reception device for voice communication according to the present invention is not limited to a call using a mobile phone, but can also be used for a call using a stationary phone or a videophone device. The present invention can also be applied as a voice input / receive device using a personal computer, a game console transmitter / receiver, a video conference transmitter / receiver, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS (a) is front explanatory drawing which shows one of the embodiment examples of the transmission / reception apparatus for voice communications of this invention. (B) is explanatory perspective view which shows the mode of use of the transmission / reception apparatus for audio | voice communication shown to (a). (A) is a front view which shows the mask part of the transmission / reception apparatus for audio | voice communication shown in FIG. (B) is XX sectional drawing of (a). Sectional explanatory drawing which shows a mode that the mask was equipped with the piezoelectric transducer in the transmission / reception apparatus for audio | voice communication shown in FIG. Sectional explanatory drawing which shows a mode that the mask was equipped with the piezoelectric speaker in the transmission / reception apparatus for audio | voice communication shown in FIG. FIG. 4 is a block diagram schematically showing a circuit configuration in which a resistor is connected to a piezoelectric transducer in the voice communication transmitter / receiver shown in FIG. 3. The block diagram which showed typically the circuit structure which connected the receiving drive element to the piezoelectric transducer in the transmission / reception apparatus for audio | voice communication shown in FIG. The block diagram which showed typically the circuit structure which connected the rectifier circuit and the capacitor | condenser for electrical storage to the piezoelectric transducer in the voice communication transmitter / receiver shown in FIG. Cross-sectional explanatory drawing which shows another one of the example of embodiment of the transmission / reception apparatus for audio | voice communication of this invention. The block diagram which showed typically the circuit structure of the transmission / reception apparatus for voice communications shown in FIG.

Explanation of symbols

1 Electronic equipment (mobile phone)
DESCRIPTION OF SYMBOLS 2 Receiver 3 Mask 4 Transmitter 5 Wearing tool 6 Cable 7 Outer 8 Inner 9 Outer vent 10 Inner vent 11 Breathing path 13 Sheet 14 Piezoelectric transducer 15 Piezo speaker 16 Receiver drive element 17 Rectifier circuit 20 Small speaker 21 Second microphone 22 Controller R Resistor C Storage capacitor

Claims (7)

  2. A voice transmitting apparatus characterized in that a transmitter that can be attached to and detached from an electronic device is built in a mask in which voice is difficult to leak outside.   The voice transmitting device according to claim 1, wherein the mask has a double structure including a ventilation path between the outer shell and the inner shell, and the inner shell has an inner ventilation hole communicating with the ventilation channel from within the mask. A voice transmitting device characterized in that an outer vent opening communicating with an air passage from the outside is opened in the outer shell.   3. The voice transmitting apparatus according to claim 1, wherein the mask is made of an airtight material and / or structure in which the voice of the speaker is hardly leaked to the outside.   4. The voice transmitting apparatus according to claim 1, wherein a porous material is provided on the inner surface of the mask.   5. The voice transmitting apparatus according to claim 1, wherein a piezoelectric transducer that converts a speaker's voice into electrical energy in a mask and electrical energy generated from the piezoelectric transducer is consumed or thereby An audio transmission device characterized in that an electric element is driven to reduce or mute the sound.   6. The voice transmitting apparatus according to claim 1, wherein a receiver that receives a speaker's voice in a mask and a voice having an opposite phase to the voice based on the voice from the receiver. It features a controller for generating and a speaker for sending the reverse phase sound from the controller into the mask, and the voice of the speaker in the ventilation path can be canceled by the reverse phase sound sent into the mask. Voice transmitting device. 7. The voice transmitting device according to claim 1, further comprising an earphone-type or headphone-type receiver that can be attached to an ear to listen to a received voice of an electronic device. Voice transmitter / receiver.

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