TWI696995B - Audio apparatus with noise proof and noise reduction - Google Patents

Abstract

An audio apparatus with a noise proof and a noise reduction includes a circuit board, a connecter and an automatic noise cancellation unit. The connecter is electrically connected to the circuit board. The automatic noise cancellation unit is electrically connected to and arranged on the circuit board. Moreover, the automatic noise cancellation unit includes a digital microphone and a voice controller. The voice controller includes a microcontroller and a digital-to-analog conversion circuit. The digital microphone receives an external environmental noise. The microcontroller converts an external environmental noise signal into an reverse acoustic signal and outputs the reverse acoustic signal, so that the external environmental noise is eliminated or reduced, wherein an amplitude of the reverse acoustic signal is the same with an amplitude of the external environmental noise signal, and a phase of the reverse acoustic signal is reverse to a phase of the external environmental noise signal. The digital-to-analog conversion circuit converts and sends to the connecter to achieve an elimination or a reduction of the external environmental noise in a voice signal.

Description

Sound effect device with anti-noise and noise reduction

The invention relates to a noise reduction and anti-noise device, especially a sound effect device with noise reduction and anti-noise.

It is known that current anti-noise earphones, also known as active anti-noise earphones, are earphones that can eliminate unpleasant ambient noise around them through an active noise control mechanism (ANC). The principle is to use more than one microphone close to the ear to receive external environmental noise, and the electronic circuit generates a signal that is in phase opposite to the noise sound wave. When this inverted signal is generated, destructive interference eliminates the noise of the outer environment that the person wearing the headset could have heard.

Since this noise reduction mechanism is set inside the earphone, if the user needs the earphone with the noise reduction or noise reduction effect, the user must buy it out of the box. In this way, not only must he spend an extra fee, but also cause The earphones that had no anti-noise mechanism originally were wasted when not in use.

Therefore, the main purpose of the present invention is to solve the traditional defects and avoid the existence of the defects. The present invention electrically connects an automatic noise cancellation unit with anti-noise or noise reduction to the connector, so that the user does not need to purchase additional anti-noise effects. The earphones have the function of anti-noise or noise reduction when the general earphones are directly connected to the connector, so that the earphones have the effect of anti-noise or noise reduction, so that users can isolate external environmental noise when listening to voice signals.

In order to achieve the above purpose, the present invention provides an audio device with anti-noise and noise reduction, including: a circuit board, a connector and an automatic noise cancellation unit. The connector is electrically connected to the circuit board. The automatic noise cancellation unit is electrically connected to the circuit board. Among them, the automatic noise cancellation unit eliminates or reduces the environmental noise entrained in the voice signal.

In one embodiment of the present invention, the circuit board has a plurality of electrical connection holes. The electrical connection holes are used to electrically connect the connector to electrically connect the connector to the automatic noise cancellation unit.

In an embodiment of the present invention, the automatic noise canceling unit includes at least a digital microphone and a voice controller electrically connected to the digital microphone. The voice controller includes a microcontroller and a digital conversion analog circuit.

In one embodiment of the present invention, the connector is a sound effect socket, which has a plurality of conductive pins to be inserted into the electrical connection holes of the circuit board.

In one embodiment of the present invention, the connector is a sound effect socket, which has a plurality of conductive pins to be inserted into the electrical connection holes of the circuit board, and a plurality of conductive terminals are provided on the circuit board, The conductive terminals and the circuit board are in a mutually perpendicular state and are electrically connected to the motherboard of the electronic device.

In an embodiment of the invention, the connector is a female connector of a USB Type-C interface.

To achieve the above purpose, the present invention provides another sound effect device with anti-noise and noise reduction, including: a circuit board and an automatic noise cancellation unit. The front end of the circuit board has a tongue part and the rear end has a plurality of conductive terminals, and the two sides of the tongue part have a plurality of guide parts. The automatic noise cancellation unit is electrically connected to the circuit board. Among them, the automatic noise cancellation unit eliminates or reduces the environmental noise entrained in the voice signal.

In one embodiment of the present invention, the tongue portion and the guide portions are defined as conforming to the USB Type-C interface specification, and can be used for plugging of a connector of the USB Type-C interface specification.

In an embodiment of the present invention, the automatic noise canceling unit includes at least a digital microphone and a voice controller electrically connected to the digital microphone. The voice controller includes a microcontroller and a digital conversion analog circuit.

In an embodiment of the invention, the circuit board has two limiting guide grooves, and the two limiting guide grooves are assembled with a metal casing.

In one embodiment of the present invention, the metal casing conforms to the USB Type-C interface specification, and has at least one elastic piece, a positioning protrusion adjacent to the elastic pieces, and a positioning on each side of the metal casing A positioning groove is provided on both sides of the chip and the tail end, and the tongue portion is sleeved on the metal shell, and the positioning grooves on both sides of the tail end are connected to the limit guide groove of the circuit board to form a Female connector for the plug of the mating connector.

10: Sound effect device

1: connector

11: conductive pin

2: circuit board

21: Electrical connection hole

22: conductive terminal

3: Automatic noise elimination unit

31: Digital microphone

32: Voice controller

321: Microcontroller

322: Digital conversion analog circuit

20: headphones

201: plug

1a: connector

11a: circuit board

111a: tongue section

112a: conductive terminal

113a: guide

114a: limit guide groove

12a: Metal housing

121a: shrapnel

122a: positioning convex part

123a: positioning piece

124a: positioning groove

30: Electronic device

301: Speaker

302: Far-end talker

40: Smartphone

401: opening

1 is a schematic diagram of a first embodiment of the present invention; FIG. 2 is a schematic block diagram of an automatic noise cancellation unit circuit of FIG. 1; FIG. 3 is a schematic diagram of a use state of the first embodiment of the present invention; FIG. 4 is a diagram of the present invention FIG. 5 is a schematic side view of the electrical connection between the circuit board of FIG. 4 and the motherboard of the electronic device; FIG. 6 is a schematic view of the use state of the second embodiment of the invention; FIG. 7 is the invention FIG. 8 is a schematic diagram of the fourth embodiment of the present invention; FIG. 9 is a schematic diagram of the electrical connection between the circuit board and the connector of FIG. 8; FIG. 10 is a schematic diagram of the fifth embodiment of the present invention.

The technical content and detailed description of the present invention are now described in conjunction with the drawings as follows: please refer to FIGS. As shown in the figure: the sound effect device with noise reduction and anti-noise of the present invention, the sound effect device 10 includes: a connector 1, a circuit board 2 and an automatic noise canceling unit 3, with the connector 1 added to have A unit that reduces environmental noise so that users on both sides can clearly hear each other's speech.

The connector 1 is a connector 1 with a female connector, and has a plurality of conductive pins 11 thereon. In the present invention, the connector 1 is, but not limited to, an audio jack (AUDIO JACK) of a headphone jack or a female connector of a USB Type-C interface, for users to plug in headphones.

The circuit board 2 has a plurality of electrical connection holes 21 for electrically connecting the conductive pins 11 of the connector 1 to output and input signals of the connector 1 All are transmitted through the circuit board 2.

The automatic noise canceling unit 3 is electrically connected to the circuit board 2 and includes at least a digital microphone 31 and a voice controller 32 electrically connected to the digital microphone 31. The voice controller 32 includes a microcontroller (MCU) 321 and a digital conversion analog circuit 322. The digital microphone 31 is used to receive external environmental noise and output a digital signal. The voice controller 32 is electrically connected to the digital microphone 31 to receive the external noise signal output by the digital microphone 31, and the microcontroller 321 of the voice controller 32 converts the external noise signal into an external ambient noise signal The opposite sound wave signals with the same amplitude and opposite phase are output, so that the external environmental noise can be eliminated or the noise can be reduced. The digital signal after the noise is eliminated or reduced is converted by the digital conversion analog circuit 322 built in the voice controller 32 It is then transmitted to the connector 1 or to the speaker 301 of the electronic device 30, so that the recipient can clearly hear the voice signal of the speaker. At the same time, the voice signal of the far-end talker 302 can also eliminate the environmental noise contained in the voice signal of the far-end talker 302 through the voice controller 32, so that the receiver can clearly hear the other party's voice signal.

Please refer to FIG. 3, which is a schematic view of a first embodiment of the present invention in use. At the same time, it is illustrated together with FIG. 1, as shown in the figure: when the user inserts the plug 201 of the earphone 20 into the connector 1 of the audio device 10. When the recipient is receiving the voice signal of the phone, the digital microphone 31 outputs a digital signal after receiving external environmental noise. When the digital signal is processed by the microcontroller 321 of the voice controller 32, the external noise signal is converted into an opposite sound wave signal with the same amplitude and opposite phase as the external environmental noise signal, so that the external environmental noise can be eliminated. The digital signal after the noise cancellation is converted by the digital conversion analog circuit 322 built in the voice controller 32 and then transmitted to the connector 1 or the speaker 301 of the electronic device 30 to allow the receiver to listen The speaker of the machine 20 or the electronic device clearly hears the voice signal of the talker. At the same time, the voice signal of the far-end talker 302 can also eliminate the ambient noise of the far-end talker 302 through the voice controller 32, so that the receiver can clearly hear the other party's voice signal.

Moreover, when the user listens to music or recording file data, after the same processing by the automatic noise cancellation unit 3, the ambient noise around the user can be eliminated or reduced, so that the use of this can listen to music or recording file data without interference .

Please refer to FIGS. 4 and 5, which are schematic diagrams of a second embodiment of the present invention and schematic side views of the electrical connection between the circuit board of FIG. 4 and the motherboard of the electronic device. As shown in the figure: This embodiment is substantially the same as the first embodiment, except that the connector 1a is a printed circuit board 11a that conforms to the USB Type-C interface specification. The front end of the circuit board 11a has a tongue The portion 111a and the rear end have a plurality of conductive terminals 112a electrically connected to a motherboard of an electronic device (not shown). The tongue portion 111a has a plurality of guide portions 113a on each side of the tongue portion 111a. The tongue portion 111a and The guide portions 113a are defined as complying with the USB Type-C interface specification, and can be plugged into a connector (not shown) of the USB Type-C interface specification.

Moreover, the circuit board 11a can be electrically connected to the digital microphone 31 and the voice controller 32 of the automatic noise canceling unit 3, and the automatic noise cancelling unit 3 can eliminate or reduce The ambient noise of the caller or the callee makes the caller clearly hear the voice signal of the caller.

Please refer to FIG. 6, which is a schematic view of a second embodiment of the present invention in use. As shown in the figure: the connector 1a of the second embodiment of the present invention can be installed in the smartphone 40, an opening 401 is opened in the smartphone 40, and the circuit of the connector 1a is installed in the opening 401 The board 11a is used for inserting a plug conforming to the USB Type-C interface (not shown).

Please refer to FIG. 7, which is a schematic diagram of a third embodiment of the present invention. As shown in the figure: The third embodiment of the present invention is substantially the same as the second embodiment, the difference is that a metal shell 12a is assembled on the tongue portion 111a of the circuit board 11a, and the metal shell 12a can protect the tongue Piece section 111a. The metal casing 12a conforms to the USB Type-C interface specification. The metal casing 12a has at least one elastic piece 121a, a positioning protrusion 122a adjacent to the elastic pieces 121a, and a positioning piece 123a on each side of the metal casing 12a A positioning groove 124a is provided on both sides of the tail end. After the metal shell 12a is sleeved with the tongue portion 111a, the positioning grooves 124a on both sides of the tail end are connected to the limiting guide groove 114a of the circuit board 11a to form a plug for mating the connector (in the figure Not shown) female connector.

Please refer to FIG. 8, which is a schematic diagram of the fourth embodiment of the present invention and the electrical connection between the circuit board and the connector of FIG. 8. As shown in the figure: This embodiment is substantially the same as the first embodiment, except that after the volume of the circuit board 2 is reduced, a plurality of electrical connection holes 21 arranged in a line on the circuit board 2 The plurality of conductive pins 11 on the connector 1 are arranged in a line at the end of the connector 1 and are perpendicular to the connector 1 to correspond to the electrical connection holes 21 of the circuit board 2 Pick up. The digital microphone 31 and a voice controller 32 of the automatic noise cancelling unit 3 are also electrically connected to the circuit board 2 so that the circuit board 2 can be concealedly installed inside or at the bottom of the connector 1 so that the entire connector 1 It can be directly connected to the motherboard of the electronic device (not shown).

Please refer to FIG. 10, which is a schematic diagram of a fifth embodiment of the present invention. As shown in the figure: This embodiment is substantially the same as the first and fourth embodiments, except that the volume of the circuit board 2 is reduced, and the plurality of conductive pins 11 on the connector 1 are extended to the connector The end of 1 corresponds to the electrical connection hole 21 of the circuit board 2 to be electrically connected, so that the circuit board 2 can be mounted on the rear end surface of the connector 1, and a plurality of conductive terminals 22 are provided on the circuit board 2 The conductive terminals 22 and the circuit board 2 are perpendicular to each other, so that the entire connector 1 can be directly electrically connected to the motherboard of the electronic device (not shown).

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of patent protection of the present invention, so any equivalent changes in the description or drawings of the present invention are included in the rights of the present invention in the same way. Within the scope of protection, Chen Ming.

10: Sound effect device

1: connector

11: conductive pin

2: circuit board

21: Electrical connection hole

3: Automatic noise elimination unit

31: Digital microphone

32: Voice controller

Claims (4)

A sound effect device with anti-noise and noise reduction, comprising: a circuit board with a plurality of electrical connection holes; an automatic noise cancellation unit electrically connected to the circuit board, the automatic noise cancellation unit at least includes There is a digital microphone and a voice controller electrically connected to the digital microphone. The voice controller includes a microcontroller and a digital conversion analog circuit; a connector is a sound effect socket with a plurality of conductive pins on it, The conductive pins are electrically connected to the electrical connection holes of the circuit board to electrically connect the connector to the automatic noise cancellation unit; wherein, the automatic noise cancellation unit eliminates or reduces the voice signal Entrained environmental noise. A sound effect device with anti-noise and noise reduction includes: a circuit board having a plurality of electrical connection holes, a plurality of conductive terminals are provided on the circuit board, the conductive terminals and the circuit board are in a mutually perpendicular state and The main board of the electronic device is electrically connected; an automatic noise cancellation unit is electrically connected to the circuit board. The automatic noise cancellation unit at least includes a digital microphone and a voice controller electrically connected to the digital microphone, The voice controller includes a microcontroller and a digital conversion analog circuit; a connector is a sound effect socket, which has a plurality of conductive pins, the conductive pins are connected with the electrical connection holes of the circuit board The electrical connection electrically connects the connector to the automatic noise cancellation unit; wherein, the automatic noise cancellation unit eliminates or reduces the environmental noise entrained in the voice signal. A sound effect device with anti-noise and noise reduction, including: A circuit board with a plurality of electrical connection holes; an automatic noise cancellation unit is electrically connected to the circuit board, the automatic noise cancellation unit includes at least a digital microphone and an electrical connection with the digital microphone Voice controller, the voice controller includes a microcontroller and a digital conversion analog circuit; a connector, which is a female connector of the USB Type-C interface, is electrically connected to the electrical connection holes of the circuit board , The connector is electrically connected to the automatic noise cancellation unit; wherein, the automatic noise cancellation unit is used to eliminate or reduce the environmental noise entrained in the voice signal. A sound effect device with anti-noise and noise reduction includes: a circuit board with a tongue portion at the front end and a plurality of conductive terminals at the rear end, and a plurality of guide portions on each side of the tongue portion, the tongue The part and the guide parts are defined as complying with the USB Type-C interface specification, and plugged into the connector of the USB Type-C interface specification. The circuit board has two limit guide slots; a metal shell, It conforms to the USB Type-C interface specification. It has at least one elastic piece, a positioning protrusion adjacent to the elastic pieces, and a positioning piece on each side of the metal shell and a positioning groove on both sides of the tail end , In the metal shell, the tongue part is sleeved, and the positioning grooves on both sides of the tail end are connected to the two limiting guide grooves of the circuit board to form a female connector for the plug of the connector; The automatic noise cancellation unit is electrically connected to the circuit board. The automatic noise cancellation unit includes at least a digital microphone and a voice controller electrically connected to the digital microphone. The voice controller includes a microcontroller and A digital conversion analog circuit; wherein, the automatic noise cancellation unit eliminates or reduces environmental noise entrained in the voice signal.

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