WO2014133346A1

WO2014133346A1 - Receiver capable of recognizing external situations

Info

Publication number: WO2014133346A1
Application number: PCT/KR2014/001646
Authority: WO
Inventors: 안은영
Original assignee: 한밭대학교 산학협력단
Priority date: 2013-02-27
Filing date: 2014-02-27
Publication date: 2014-09-04
Also published as: KR101382553B1

Abstract

The present invention relates to a receiver capable of recognizing external situations, which has a left-side speaker module and a right-side speaker module respectively provided with a control circuit, and the control circuit comprises: a pickup microphone for picking up an external sound source so as to output a sound source signal; an amplifier for amplifying the sound source signal so as to output the amplified signal; an A/D converter for converting the amplified signal into a digital sound source signal so as to output the converted signal; a control unit for filtering noise, adjusting a volume level of the external sound source, and outputting an acoustic signal by controlling the ratio between the volume of the external sound source and the volume of an internal sound source; and a speaker for outputting sound according to the acoustic signal, wherein the left-side speaker module and the right-side speaker module respectively and separately operate such that an internal sound source such as music or the like provided from a mobile terminal can be received in high quality and a success rate of avoiding risk can be increased by allowing a user to immediately cope with risk factors.

Description

External Situation Receiver

The present invention relates to a receiver including an earphone and a headphone, and more particularly, an external unit for detecting an external sound source such as a vehicle horn sound or a person yelling in a state of listening to an internal sound source such as music through the receiver to warn a user. It is about a situation-aware receiver.

Recently, as the mobile terminal including the audio function is widely spread, it is possible to carry a high quality service by carrying the mobile terminal.

In this case, in order to receive a high quality service using the mobile terminal, earphones or headphones are necessarily required.

As described above, the receiver including the earphone and the headphone can provide a high quality sound to the user, and can effectively provide a high quality service to the user, especially in a large number of external sound sources such as noise.

By the way, while the receiver can be provided with a high-quality sound while wearing the receiver, safety warning may occur because the warning external sound sources such as vehicle horn sound or people shout.

In addition, recently produced receivers are manufactured ergonomically in consideration of the shape of the human ear to maximize the transmission power of internal sound sources such as music while minimizing pain and rejection. For this reason, recently produced receivers more effectively block external sound sources, thereby increasing the risk of safety accidents.

As such, when using the receiver, not only does not respond to external sound sources such as telephone bells and doorbells in everyday life, but also does not respond to vehicle horn sounds in the external environment, leading to serious safety accidents.

In this regard, techniques have been proposed to warn the user by supplying an external sound source to the receiver.

However, since these technologies use a technique of simply picking up an external sound source and combining it with an internal sound source transmitted from a mobile terminal or removing noise, there is an effect that warns of an external danger, but it is limited to cope with an urgent situation. There is.

That is, the existing technologies have a problem in that the risk avoidance success rate for the risk factor is low because it cannot know how close the risk factor is in which direction.

Republic of Korea Patent Publication No. 10-0694767 (Notice date 2007.03.13.)

Republic of Korea Patent Publication No. 10-2012-0042218 (Published Date 2012.05.03.)

Accordingly, the present invention has been made to solve the above problems of the prior art, an object of the present invention by providing an environment similar to the human ear, even while listening to the sound source (internal sound source) with a mobile device using the receiver external sound source Not only to listen to the situation, but also to easily recognize the location of the source of the warning sound source to provide an external situation awareness receiver that can increase the success rate of risk avoidance.

External situation recognition receiver of the present invention for achieving the above object, the left speaker module including a control circuit for outputting the combined internal sound source and the external sound source received from the outside; And a right speaker module including a control circuit for combining and outputting the internal sound source and the external sound source, wherein each of the left speaker module and the right speaker module operates separately.

The control circuit includes a pickup microphone for picking up the external sound source and outputting a sound source signal; An amplifier for amplifying the sound source signal and outputting an amplified signal; An A / D converter converting the amplified signal into a digital sound source signal and outputting the converted signal; A controller for adjusting a volume level of the digital sound source signal and outputting a sound signal controlling a ratio of the volume of the external sound source to the volume of the internal sound source; And a speaker for outputting sound in accordance with the sound signal.

A switch for controlling power supply to the microphone module including the pickup microphone, the amplifier, and the A / D converter may be formed between the power supply unit and the microphone module.

The amplifier may be connected to a sensitivity control unit for adjusting the sensitivity of the external sound source.

The control unit includes a filtering unit for filtering noise of the digital sound source signal; A volume level controller for adjusting a volume level of the external sound source; A sound source coupling unit for combining the volume of the external sound source and the volume of the internal sound source at a set combining ratio; And an output unit for outputting the combined sound source.

The housing of the left speaker module and the right speaker module is exposed and mounted with a pickup microphone, and the housing around the housing where the pickup microphone is installed preferably has an ear shape or a cone shape of a human body.

Also, pick-up microphones should be covered with a soft, soft, low-impact material cover to reduce the effects of external wind and other noise.

As described above, according to the external situation recognition receiver according to the present invention, while receiving an internal sound source such as music provided from the mobile terminal with high sound quality, it is possible to immediately cope with the risk factor and increase the success rate of risk avoidance.

In particular, it is possible to easily hear the car horn sound or the sound of people yelling, and to determine the size or direction of the vehicle, thereby avoiding safety accidents.

Such effects can be expected to be relatively large in ergonomic earphones or sealed headphones.

1 is an external perspective view of a receiver according to an embodiment of the present invention.

2 is a control circuit block diagram of a receiver according to an embodiment of the present invention.

3 is a block diagram of a control unit according to an embodiment of the present invention.

4 is a block diagram of a control unit according to another embodiment of the present invention.

5 is a flowchart illustrating an operation of a receiver according to an embodiment of the present invention.

1: pickup microphone

2: switch

3: sensitivity control unit

7: control unit

71: volume level control unit

72: sound source coupling unit

73: output unit

Hereinafter, an external situation recognition receiver of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the receiver of the present invention outputs an internal sound source such as music transmitted from a mobile terminal, and also picks up and outputs an external sound source such as a vehicle horn or a person yelling and outputs a right speaker module. It includes.

The left speaker module and the right speaker module constitute a pickup microphone 1 at the outside thereof, and the left speaker module and the right speaker module have a switch 2 for controlling the operation of the pickup microphone 1 at the outside thereof, and a pickup. The sensitivity adjusting unit 3 for adjusting the sensitivity of the microphone 1 can be configured.

The left speaker module and the right speaker module may receive an internal sound source from a mobile terminal in a wired or wireless manner.

In addition, when the mobile terminal and the speaker module are wired, a controller for controlling the speaker module may be connected to the audio signal line. Of course, a controller may be provided even when the mobile terminal and the speaker module are wirelessly connected. The controller may be installed at one of the left and right sides to control both sides, but the controller may be installed at each of the left and right speaker modules. Preferably, the wireless speaker module is further added to the left speaker module and the right speaker module for wireless transmission and reception of the internal sound source. Of course, the stereo transmission and reception module may be installed on one side and connected to each speaker module by wire.

Meanwhile, when the left speaker module and the right speaker module have a headphone shape, the left speaker module and the right speaker module are generally connected by the band 4.

In the present invention, the pickup microphone 1 is exposed and mounted in the housings of the left speaker module and the right speaker module. In order to enhance the sound collection effect of the exposed pickup microphone 1, it is preferable to have the shape (e) similar to the ear of the human body or a cone shape around the housing where the pickup microphone 1 is installed. .

In addition, when the receiver is worn, it is preferable that the pickup microphone 1 is installed to face in the side direction and the rear direction so as to effectively collect the external sound source generated from the side and the rear side. Of course, the installation direction of the pickup microphone 1 may be installed facing the front side like the human body, but may be arbitrarily determined.

The pickup microphone is wrapped (covered) with fluffy material to minimize noise caused by wind.

2, the receiver control circuit of the present invention includes a pickup microphone 1 for picking up an external sound source and outputting a sound source signal, an amplifier 5 for amplifying a sound source signal and outputting an amplified signal, and an amplified signal. An A / D converter 6 for converting and outputting a digital sound source signal, and a control unit 7 for adjusting a volume level of the digital sound source signal and outputting a sound signal controlling a ratio between the volume of the external sound source and the volume of the internal sound source. And a speaker 8 for outputting sound in accordance with the sound signal.

On the other hand, a switch (2) for interrupting the power supply from the power supply unit 9 to the microphone module (pickup microphone 1, amplifier 5, A / D converter 6) is provided between the power supply unit 9 and the microphone module. It is formed in. In FIG. 2, the power supply unit 9 is shown to be supplied only to the microphone module (pickup microphone 1, amplifier 5, A / D converter 6), which is controlled by the microphone module by the switch 2. It is intended to illustrate what is going on, and power is supplied to virtually all configurations.

In addition, the sensitivity control unit 3 for adjusting the input sensitivity to the external sound source, and outputs a sensitivity setting signal corresponding to the set input sensitivity. The sensitivity control unit 3 is adjustable in stages, and the volume input through the pickup microphone 1 may be attenuated or amplified according to the stage adjustment. Preferably, the user adjusts the volume output through the speaker 8 to be the same in a worn state and a non-worn state of the receiver.

And, the receiver control circuit is configured in each of the left speaker module and the right speaker module, so that the position of the generation source relative to the external sound source can be easily determined.

The receiver control circuit configured as described above receives the internal sound source from the mobile terminal and outputs it through the speaker 8, and controls the volume of the external sound source and the volume of the internal sound source when the external sound source is input through the pickup microphone 1. Let the ratio be combined. For example, the volume of the external sound source and the internal sound source may be combined in a 3: 1 ratio. Therefore, when the external sound source is output to the speaker 8, by outputting relatively larger than the internal sound source to be able to accurately recognize the external situation. In addition, since processing is performed on the external sound source in each of the left speaker module and the right speaker module, the user can easily determine the position of the generation source relative to the external sound source. That is, it performs a function similar to the ear of the human body. This allows the user to deal with external situations in real time.

If the set value is 0 (minimum value), the coupling ratio is automatically set to 1: 1 so that the external sound source and the internal sound source are combined. Alternatively, it can always be combined in a ratio of 1: 1 without setting value, and this function can be used to use only on / off function.

On the other hand, if the microphone module (pickup microphone 1, amplifier 5, A / D converter 6) is not used in the receiver control circuit, the user may arbitrarily turn on / off the switch (2). It can control off, and user can adjust input sensitivity for external sound source arbitrarily.

Referring to Figure 3, the control unit 7 of the present invention, the volume level control unit 71 for adjusting the volume level of the external sound source, and the sound source combination for combining the volume of the external sound source and the volume of the internal sound source at a set combining ratio The unit 72 and an output unit 73 for outputting the combined sound source.

Here, the volume level control unit 71 is preferably linked to the control unit for adjusting the volume of the receiver not shown.

The controller 7 configured as described above, when the volume level of the external sound source is adjusted in the volume level control unit 71, the external sound source and the internal sound source is combined in the sound source combiner 72, the external sound source and the internal sound source At the time of combining, the adjusting is performed by adjusting the volume at the set combining ratio. Then, the combined sound source is output through the speaker (8).

Referring to FIG. 4, in contrast to FIG. 3, the controller 7 of the present invention further includes a filtering unit 74, and the filtering unit 74 is located at the front of the volume level adjusting unit 71. Would be preferred. The filtering unit 74 performs a function of removing noise from the digital sound source signal. For example, when the noise is less than or equal to the set value, the noise may be passed through the filtering unit 74 to reduce the actual noise (degree of white noise) and to reduce and transmit the sound volume of the external sound source at a constant ratio.

The reason for this is to avoid the disadvantage that if the volume of the external sound source is too small, it will naturally miss a danger and will only be recognized in an urgent situation. Therefore, even if the filter unit 74 is less than or equal to the set value, it may be desirable to have a function of reducing noise as much as possible without completely blocking the sound as long as the user uses the function.

Next, the operation of the receiver of the present invention using the system configured as described above will be described.

In the present embodiment, an operation process will be described based on the configuration of the controller of FIG. 4.

Referring to FIG. 5, first, the switch 2 is turned on to receive an external sound source (S1). The input of the external sound source is made through the pickup microphone 1 (S2).

The pickup microphone 1 processes the external sound source to output a sound source signal, and receives the sound source signal from the amplifier 5 and amplifies the sound source signal in response to the sensitivity adjusted by the sensitivity control unit 3 ( S3).

The amplified signal amplified by the amplifier 5 is converted into a digital sound source signal by the A / D converter 6, and then the digital sound source signal is filtered such as white noise (S4). In this case, when the noise is less than the set value, for example, it may be desirable to reduce the actual noise (degree of white noise) while passing through the filtering unit 74 and to reduce and transmit the sound volume of the external sound source to a predetermined ratio. . Subsequently, the volume level of the filtered digital sound source signal is adjusted (S5). Adjust the ratio according to the setting value.

Subsequently, in the sound source combining unit 72, the volume of the external sound source and the volume of the internal sound source are combined at a set combining ratio. Coupling ratio is to follow the set value (S6).

The binding ratio should always be the same for the left and right modules. This way you know exactly where you are in space.

The sound source thus combined is output through the speaker 8 (S7).

On the other hand, the above-described control process is performed in the left speaker module and the right speaker module, respectively, so that it is possible to easily determine the position of the source for the external sound source.

For example, if the vehicle horn sound is generated in the left side direction, the volume of the left speaker module is output through the speaker 8 at a larger volume than the right speaker module, so that the user senses the position of the vehicle horn sound generated in the space. This can be done, and the quick response is possible.

On the other hand, by adjusting the sensitivity of the left speaker module and the right speaker module differently according to the state (disorder) of both ears, it may be possible to achieve a balanced volume output at both ears.

As described above, the present invention allows sound collection to the pickup microphone 1 through a shape or cone shape similar to the human ear in both housings of the receiver including the earphone and the headphone, and the external pickup picked up through the pickup microphone 1. The sound source is made to be properly coupled with the internal sound source through the signal processing to be output to the speaker (8).

In the present invention, each of the speaker modules on both sides are to be operated separately, which is applied to the principle that the ear of the human body operates on each side, through which it is possible to easily determine the external sound source generated external sound source.

In addition, the receiver of the present invention may block the external sound source according to the user's operation, it is also possible to adjust the sensitivity, it may be able to perform the same function as the hearing aid through the sensitivity control.

Although the present invention has been described in more detail with reference to some embodiments, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

Claims

A left speaker module including a control circuit for combining and outputting the internal sound source transmitted from the terminal and the external sound source input from the outside; And

And a right speaker module including a control circuit for combining and outputting the internal sound source and the external sound source,

An external situation recognition receiver, wherein the left speaker module and the right speaker module are operated separately.
The method of claim 1,

The control circuit,

A pickup microphone for picking up the external sound source and outputting a sound source signal;

An amplifier for amplifying the sound source signal and outputting an amplified signal;

An A / D converter converting the amplified signal into a digital sound source signal and outputting the converted signal;

A control unit which adjusts a volume level of the digital sound source signal and outputs a sound signal controlling a ratio (left and right equal values) of the volume of the external sound source and the volume of the internal sound source; And

An external situation awareness receiver comprising a speaker for outputting sound in accordance with the sound signal.
The method of claim 2,

And a switch for controlling the power supply to the microphone module including the pickup microphone, the amplifier, and the A / D converter is formed between a power supply unit and the microphone module.
The method of claim 2,

And the amplifier is connected to a sensitivity control unit for adjusting the sensitivity of the external sound source.
The method of claim 4, wherein

The control unit,

A filtering unit to filter noise of the digital sound source signal;

A volume level controller for adjusting a volume level of the external sound source;

A sound source coupling unit for combining the volume of the external sound source and the volume of the internal sound source at a set combining ratio; And

External situation recognition receiver including an output unit for outputting the combined sound source.
The method of claim 1,

The housing of the left speaker module and the right speaker module is exposed to the pick-up microphone mounted, and the housing around the housing is installed pickup pickup microphone has an external shape or a cone (cone) shape of the external situation.
The method of claim 6,

An external situation-aware receiver that minimizes the noise effect caused by wind by wrapping the sound collecting part having the ear or cone shape of the human body formed around the pickup microphone with a fluffy material.