JP5087930B2 - Recording system, recording device, and microphone device - Google Patents

Description

The present invention relates to a microphone device that converts sound into an electrical sound signal and outputs the same, a recording device that can supply power to the microphone device , and a recording system.

  2. Description of the Related Art Conventionally, as a flash memory type or HDD type portable audio device, one having a connection terminal for recording from an external device and having a direct encoding function is known. However, as a device having such a direct encoding function, there are almost no models equipped with a connection terminal from an external microphone.

  FIG. 6 is a perspective view showing an example of a conventional portable audio device having such a direct encoding function. This apparatus includes a φ3.5 or φ2.5 stereo mini jack 61 as a recording terminal and a B type mini USB jack 62. The stereo mini jack 61 is for direct encoding, and the audio signal input from the stereo mini jack 61 is encoded and recorded in MP3 or WMA format data. The mini USB jack 62 is used for connection with a personal computer, charging, and power feeding.

  In a model having such an external input terminal, the output of the counterpart device connected to the external input terminal is mainly an external output of an audio device or a headphone output of a radio cassette or portable audio. That is, in a device having an external microphone terminal for recording using an external microphone, the input sensitivity is usually set to about 0.1 to 2.5 [mV], but a general input used for direct encoding is used. It is considered that the terminal is often set to about 500 [mV] to 2 [V]. Therefore, in order to record by connecting an external microphone to a general input terminal for direct encoding, a microphone amplifier or the like is used to compensate for this difference in output level, and it is amplified to a normal signal level. It is necessary to connect from. However, a power supply is required for the operation of the microphone amplifier. In the case of a general external microphone amplifier, a dry battery or the like is often used as a power source.

  FIG. 7 is a perspective view showing an example of a conventional amplifier built-in microphone. The audio signal from the microphone 71 is amplified using a battery 72 such as a dry battery or a button battery as a power source, and is output from a stereo mini-plug 73 of φ3.5 or φ2.5. Therefore, the audio signal from the microphone 71 can be recorded by the apparatus of FIG. 6 by connecting the stereo mini plug 73 to the stereo mini jack 61 of the apparatus of FIG.

  On the other hand, there is also known a plug-in power type microphone in which power supply for amplification is received not from a battery but from a recording device side (for example, see Non-Patent Document 1). This microphone can be supplied with power for amplification simply by inserting its connection plug into the microphone terminal of the recording device.

Explanation of microphone ECM-DS70P at Sony eCatalog (site where product information of Sony products can be searched), [online], Sony Marketing Inc., [January 5, 2007 search], Internet <URL: http: // www . ecat. sony. co. jp / avacc / mic / acc / index. cfm? PD = 885>

  However, according to the conventional portable audio device of FIG. 6 described above, when recording using a microphone, a microphone with a built-in amplifier that requires a battery as shown in FIG. 7 must be used. And it is difficult to reduce the weight. In addition, according to the plug-in power type microphone described above, the recording apparatus side needs to be compatible with the plug-in power system, and thus is not versatile.

An object of the present invention is to provide a versatile microphone device having an amplifying function and a recording capable of supplying power to the microphone device without the need of providing a power source such as a battery in view of the problems of the prior art. An apparatus and a recording system including the recording system are provided.

The recording system of the present invention is provided on a first surface with a microphone unit that converts voice into an electrical voice signal, an amplification unit that amplifies the voice signal from the microphone unit, and is amplified by the amplification unit A microphone device including a signal output terminal unit for outputting an audio signal, and a power input terminal unit that is provided on the first surface and receives power supplied to the amplifier unit, and a second surface. Power supply provided to input an audio signal to be recorded, and a power supply function provided on the second surface and switchable between a power supply function for supplying power to the outside and a power reception function A recording device comprising a terminal unit and switching means for switching between the power feeding function and the power receiving function, wherein the microphone device and the recording device face the first surface and the second surface; Microphone And the recording device are simultaneously connected by fitting between the signal output terminal portion and the signal input terminal portion, and connected by fitting between the power input terminal portion and the power supply terminal portion, and the microphone device. In response to the fact that the microphone device is attached to the recording device, the switching means can change the function of the power supply terminal unit from the power receiving function. Switch to the power supply function.

According to a preferred recording system of the present invention, power is supplied to the amplification unit of the microphone device by the connection between the power input terminal unit and the power supply terminal unit, and the audio signal from the microphone unit is amplified by the amplification unit. And output from the signal output terminal section.

According to a preferred recording system of the present invention, when power is supplied to the power input terminal unit, the microphone device amplifies an audio signal from the microphone unit by the amplifying unit and outputs from the signal output terminal unit. When power is not supplied to the power input terminal unit, the audio signal from the microphone unit is output from the signal output terminal unit without being amplified.

According to a preferred recording system of the present invention, the positional relationship between the signal output terminal portion and the power input terminal portion is variable on the first surface.

According to a preferred recording system of the present invention, the power input terminal portion is rotatable around an axis perpendicular or parallel to the first surface.

The recording apparatus of the present invention and the microphone apparatus of the present invention are composed of the above-described recording apparatus and microphone apparatus constituting the recording system of the present invention.
The recording apparatus of the present invention is provided on a first surface with a microphone unit that converts sound into an electrical sound signal, an amplification unit that amplifies the sound signal from the microphone unit, and is amplified by the amplification unit The microphone device includes a signal output terminal unit for outputting an audio signal and a power input terminal unit that is provided on the first surface and receives power supplied to the amplifying unit. The recording apparatus of the present invention is provided on the second surface, and a signal input terminal portion for inputting an audio signal to be recorded, and a power supply provided on the second surface for supplying electric power to the outside. A power supply terminal unit that can be switched between a function and a power reception function, and a switching unit that switches between the power supply function and the power reception function, the microphone device and the recording device include the first surface and the first 2 between the microphone device and the recording device, the connection by fitting between the signal output terminal portion and the signal input terminal portion, and the fitting between the power input terminal portion and the power supply terminal portion. The microphone device can be attached to the recording device at the same time, and the switching means is configured so that the microphone device is attached to the recording device. In response to the switches to the power supply function of the function of the power supply terminal portions from the power receiving function.
A microphone device according to the present invention is provided on a first surface of a microphone unit that converts voice into an electrical voice signal, an amplifier unit that amplifies a voice signal from the microphone unit, and is amplified by the amplifier unit. A signal output terminal unit for outputting an audio signal and a power input terminal unit provided on the first surface to which power to be supplied to the amplifying unit is input are used by being connected to a recording apparatus. The recording device is provided on a second surface and is provided with a signal input terminal portion for inputting a sound signal to be recorded, a power supply function provided on the second surface and for supplying power to the outside, A power supply terminal that can be switched between functions, and a switching unit that switches between the power feeding function and the power receiving function. In the microphone device and the recording device, the first surface and the second surface are opposed to each other, and the signal output terminal portion and the signal input terminal portion are fitted between the microphone device and the recording device. Connection and connection by fitting between the power input terminal portion and the power supply terminal portion are performed at the same time, and the microphone device can be mounted on the recording device. In response to the device being mounted on the recording device, the function of the power supply terminal unit is switched from the power receiving function to the power feeding function.

  According to the recording system of the present invention, the first surface and the second surface are opposed to each other, and the microphone device is pressed against the recording device, thereby connecting the signal output terminal portion and the signal input terminal portion by fitting, and Since the connection between the power input terminal portion and the power supply terminal portion is simultaneously performed by fitting so that the microphone device can be attached to the recording device, a highly versatile microphone having an amplification function by power feeding from the recording device The apparatus can be attached to the recording apparatus with a higher strength and with a single touch.

  According to the microphone device of the present invention, the signal output terminal unit and the power input terminal unit are arranged on the same plane, and when power is supplied to the power input terminal unit, the audio signal from the microphone unit is amplified by the amplification unit. When the power is not supplied to the power input terminal unit, the audio signal from the microphone unit is output from the signal output terminal unit without being amplified. Thus, it is possible to deal with both cases where amplification is necessary and unnecessary.

  Moreover, since the positional relationship between the signal output terminal portion and the power input terminal portion is variable on the same surface, the positional relationship between the signal input terminal portion and the power output terminal portion connected to these terminal portions is variously different. It can correspond to many recording devices.

  In addition, since the power input terminal portion can be rotated around an axis perpendicular to the same plane, many recording apparatuses having different rotational positions around the same axis of the power output terminal connected to the power input terminal portion. It can correspond to.

  Further, since the power input terminal portion can be rotated around an axis parallel to the same plane, it is possible to cope with a recording apparatus that does not have a power output terminal connected to the power input terminal portion.

  FIG. 1 is a perspective view showing an audio player according to the first embodiment of the present invention. As shown in the figure, the audio player includes an optional microphone 10a and a player body 20 that can be used by connecting the optional microphone 10a. The optional microphone 10a includes a microphone 11 that converts sound into an electrical sound signal, a built-in microphone amplifier (not shown) that amplifies the sound signal from the microphone 11, and a sound signal that is amplified by the built-in microphone amplifier. A stereo mini plug 12 of φ3.5 or φ2.5 and a B type mini USB plug 13 for inputting power to be supplied to the built-in microphone amplifier are provided. The stereo mini plug 12 and the mini USB plug 13 are provided on the facing surface 14 that faces the player main body 20 when the optional microphone 10 a is attached to the player main body 20.

  The player body 20 includes a φ3.5 or φ2.5 stereo mini jack 21 to which an audio signal is input, and a B type mini USB jack 22 that can also be used for power supply to the outside. The stereo mini jack 21 and the mini USB jack 22 are provided on the facing surface 23 that faces the facing surface 14 when the option microphone 10a is used. The player main body 20 has a direct encoding function, and can convert an audio signal input via the stereo mini jack 21 into MP3 or WMA format data and record it in a built-in memory such as a flash memory or a hard disk. The player body 20 can also operate in a mass storage mode when connected to a personal computer via the mini USB jack 22, and receives music files, general data, etc. from the personal computer to the built-in memory. It can be saved, and the saved contents can be synchronized with the saved contents on the personal computer.

  Although not shown, when the optional microphone 10 a is attached to the player main body 20 and the stereo mini plug 12 and the mini USB plug 13 of the optional microphone 10 a are inserted into the stereo mini jack 21 and the mini USB jack 22. And a mechanical and circuit configuration for detecting the fact. Unlike the mass storage mode in which power is supplied from a personal computer, when the optional microphone 10a is attached, the mini USB jack 22 is used to supply power to the optional microphone 10a. In response to the detection of the attachment, a switching means for switching the function of the mini USB jack 22 from the power receiving function to the power feeding function is provided. The switching means connects the power line of the mini USB jack 22 to the charging circuit when receiving power, but switches to connect to the output side from the rechargeable battery of the player body 20 when supplying power.

  When the option microphone 10a is used, the user presses the option microphone 10a against the player body 20 with the facing surface 14 facing the facing surface 23 on the player body 20 side, so that the stereo mini plug 12 and Connection by fitting between the stereo mini jack 21 and connection by fitting between the mini USB plug 13 and the mini USB jack 22 can be performed simultaneously. Thereby, the mounting of the optional microphone 10a is completed, and the use becomes possible.

  When the player body 20 is turned on, the player body 20 starts to supply power from the rechargeable battery. If the optional microphone 10a is attached at this time, this is detected, and a part of the power supplied by the rechargeable battery is supplied to the optional microphone 10a via the power line of the mini USB jack 22 by the switching means. Switch as follows. This part of the electric power is supplied to the built-in microphone amplifier of the optional microphone 10a through the mini USB jack 22 and the mini USB plug 13.

  As a result, the option microphone 10a can amplify the audio signal from the microphone 11 by the built-in microphone amplifier and supply it to the player main body 20 at a level sufficient for recording. When the recording button is pressed in the player main body 20, the player main body 20 converts the audio signal supplied from the option microphone 10a via the stereo mini jack 21 into MP3 or WMA format data and records it in the built-in memory.

  According to the present embodiment, the optional microphone 10a can be a highly versatile microphone device having an amplification function without requiring a power source such as a battery. That is, a USB terminal that is generally provided for a portable audio device of flash memory type or hard disk type to be connected to a personal computer can receive +5 [V] from the personal computer side when connected to the personal computer. However, in the present embodiment, it is not necessary to provide a power source such as a battery, and the player main body 20 is provided with a plug-in power function to impair versatility. In addition, an amplification function can be given to the optional microphone 10a.

  Further, by making the facing surfaces 14 and 23 face each other in proximity or contact, the connection between the stereo mini plug 12 and the stereo mini jack 21 and the connection between the mini USB plug 13 and the mini USB jack 22 can be simultaneously performed. Thus, the optional microphone 10a can be easily attached to the player main body 20.

  When the optional microphone 10a is attached to the player body 20, the optional microphone 10a is connected by fitting between the stereo mini plug 12 and the stereo mini jack 21 and connected by fitting between the mini USB plug 13 and the mini USB jack 22. Thus, since the optional microphone 10a is supported by the player main body 20, the support strength is improved as compared with the case where the optional microphone 10a is supported only by the connection of the conventional stereo mini plug and stereo mini jack.

  Further, since there is no need to provide a power source for the optional microphone 10a, the optional microphone 10a can be configured to be simple, compact and lightweight. Therefore, the entire recording system including the player body 20 and the optional microphone 10a can be reduced in weight. The optional microphone 10a can be used as a microphone without an amplification function when it is not supplied with power via a USB power line. Therefore, it can be used as a more versatile microphone.

  FIG. 2 is a perspective view showing an optional microphone 10b according to the second embodiment of the present invention. In the figure, the same reference numerals as those of the option microphone 10a in FIG. In FIG. 2, reference numeral 26 denotes a concave portion having an opening surface in a part of the facing surface 14, 27 denotes a rotating portion that is rotatably supported around an axis parallel to the facing surface 14 in the concave portion 26, and 27 a denotes the rotating portion 27. The mounting surface is provided in parallel with the rotation axis. The mini USB plug 13 is provided on the mounting surface 27a. Other configurations are the same as those of the option microphone 10a of FIG.

  FIG. 2A shows a state where the rotation position of the rotating portion 27 is at a position where the mounting surface 27a coincides with the facing surface 14 and forms one plane. In this state, the option microphone 10b can be used by being mounted on the same player main body 20 in the same manner as in the case of the embodiment of FIG.

  On the other hand, as shown in FIG. 2 (b), the mini USB plug 13 can be rotated together with the mounting portion 27 and stored in the recess 26. In this state, only the stereo mini plug 12 can be connected and used with a player main body equipped with a microphone-dedicated terminal corresponding to a microphone having no amplification function. In this case, since power is not supplied to the mini USB plug 13, the audio signal from the microphone 11 is output from the stereo mini plug 12 without being amplified.

  Note that the on / off state of the built-in microphone amplifier of the optional microphone 10b is linked to the rotational position of the rotating unit 27 and turned on at the rotational position as shown in FIG. 2 (a), as shown in FIG. 2 (b). You may make it turn off in such a rotation position.

  According to this embodiment, since the mini USB plug 13 can be rotated around an axis parallel to the facing surface 14, the player main body that does not have a power output terminal connected to the mini USB plug 13 can be used. However, the optional microphone 10b can be used with only the stereo mini plug 12 connected.

  FIG. 3 is a perspective view showing an audio player according to the third embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same elements. In FIG. 3, 10c is an optional microphone having the same function as the optional microphone 10a in FIG. 1, 31 is a mini USB jack provided on the surface opposite to the facing surface 14 of the optional microphone 10c, and 32 is connected to a personal computer. The USB cable 32 a is a mini USB plug provided at the end of the USB cable 32 and connectable to the mini USB jack 31. The mini USB jack 31 is connected to the mini USB plug 13. Other configurations of the option microphone 10c are the same as those of the option microphone 10a in FIG.

  When the optional microphone 10c is attached to the player main body 20 in the same manner as in the case of FIG. 1, it can receive power from the player main body 20 and enjoy the amplification function of the built-in microphone amplifier. On the other hand, when the mini USB plug 32a is inserted into the mini USB jack 31 in the state where the optional microphone 10c is attached to the player main body 20, the player main body 20 and the personal computer are passed through the mini USB plug 13 and the mini USB jack 22. Connection, power supply from the personal computer to the player main body 20, and power supply from the personal computer to the option microphone 10c. Other functions and effects are the same as those in the embodiment of FIG.

  According to the present embodiment, since the mini USB jack 31 connected to the mini USB plug 13 is provided, the mini USB plug 32a of the USB cable 32 connected to the personal computer is attached while the option microphone 10c is attached to the player main body 20. By plugging into the mini USB jack 31, connection between the personal computer and the player main body 20 and power supply from the personal computer to the option microphone 10c and the player main body 20 can be performed.

  FIG. 4 is a perspective view showing an optional microphone 10d according to the fourth embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same elements. In FIG. 4, reference numeral 41 denotes a recessed portion having an opening at a part of the facing surface 14 and having a bottom surface parallel to the facing surface 14, and 42 is a movable portion that can move in the X and Y directions along the bottom surface of the recessed portion 41. The mini USB plug 13 is provided on the movable part 42. The connection between the mini USB plug 13 and the built-in microphone amplifier is maintained at each moving position of the movable portion 42. The structure of the movable part is held movably by mechanically holding the mini USB plug 13 and the movable part 42 holding the connection line thereof by a rail member (not shown) held in the recess 41. It has become so. The movable direction may be configured only in the X direction or only in the Y direction. Other configurations are the same as those of the option microphone 10a of FIG.

  When the optional microphone 10d is attached to a player main body such as the player main body 20 of FIG. 1, the user adjusts the position of the movable portion 42 and sets the position of the mini USB plug 13 relative to the stereo mini plug 12 to the corresponding player. Adjust to fit the stereo mini jack and mini USB jack on the main unit. Thereafter, as in the case of FIG. 1, the option microphone 10d can be mounted on the player body by bringing the facing surface 14 close to or in contact with the facing surface on the player body side. Other functions and effects are the same as those in the embodiment of FIG.

  According to the present embodiment, since the positional relationship between the stereo mini plug 12 and the mini USB plug 13 is variable on the facing surface 14, the positional relationship between the stereo mini jack and the mini USB jack connected to these plugs is different. An optional microphone 10d can be attached to and used for many different player bodies.

  FIG. 5 is a perspective view showing an optional microphone 10e according to the fifth embodiment of the present invention. In the figure, the same reference numerals as those of the option microphone 10a in FIG. Reference numeral 51 in FIG. 5 denotes a mounting portion provided to be rotatable around an axis perpendicular to the facing surface 14. The surface of the mounting portion 51 is coincident with the facing surface 14 and forms one plane with the facing surface 14. The mini USB plug 13 is provided on the surface of the attachment portion 51. That is, the mounting portion 51 can rotate around an axis perpendicular to the facing surface 14 while holding the mini USB plug 13 and maintaining the connection between the mini USB plug 13 and the built-in microphone amplifier. Other configurations are the same as those of the option microphone 10a of FIG. 1, and can be attached to a player body similar to the player body 20 of FIG.

  When the optional microphone 10e is attached to the player body, the user rotates the mini USB plug 13 together with the attachment portion 15 around an axis perpendicular to the facing surface 14 to thereby rotate the mini USB plug 13 in the rotational direction. The position is adjusted to the same rotational direction position in the mini USB jack on the player main body side. Thereafter, the option microphone 10e can be attached to the player body by bringing the facing surface 14 close to or in contact with the facing surface of the player body in the same manner as in the case of FIG. Other operations are the same as those of the option microphone 10a of FIG.

  According to the present embodiment, since the mini USB plug 13 can be rotated around an axis perpendicular to the facing surface 14, the same mini USB jack on the player main body side connected to the mini USB plug 13 can be used. The optional microphone 10e can be attached to and used for many player bodies with different rotational positions.

  Note that the present invention is not limited to the above-described embodiment, and can be implemented with appropriate modifications. For example, the present invention is not limited to the case where the technology according to each of the above embodiments is implemented alone, and can be implemented as a configuration combining the embodiments.

1 is a perspective view showing an audio player according to a first embodiment of the present invention. It is a perspective view which shows the option microphone which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the audio player which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the option microphone which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the option microphone which concerns on the 5th Embodiment of this invention. It is a perspective view which shows an example of the conventional portable audio apparatus. It is a perspective view which shows an example of the conventional amplifier built-in microphone.

Explanation of symbols

  10a to 10e: optional microphone, 20: player main body, 11: microphone, 12: stereo mini plug, 13: mini USB plug, 14: facing surface, 21: stereo mini jack, 22: mini USB jack, 23: facing surface, 26: recessed portion, 27: rotating portion, 27a: mounting surface, 31: mini USB jack, 32: USB cable, 32a: mini USB plug, 41: recessed portion, 42: movable portion, 51: mounting portion, 61: stereo mini jack 62 mini USB jack, 71: microphone, 72: battery, 73: stereo mini plug.

Claims (9)

A microphone unit that converts sound into an electrical sound signal;
An amplifying unit for amplifying an audio signal from the microphone unit;
A signal output terminal provided on the first surface for outputting the audio signal amplified by the amplifying unit;
Wherein provided on a first surface, the power supplied to the amplification section is a microphone device that includes a power input terminal portion to be input, and provided on the second surface, for receiving an audio signal to be recorded A signal input terminal,
A power supply terminal portion provided on the second surface and capable of switching between a power supply function for supplying power to the outside and a power reception function ;
Comprising a recording device comprising switching means for switching between the power feeding function and the power receiving function ;
In the microphone device and the recording device, the first surface and the second surface are opposed to each other, and the signal output terminal portion and the signal input terminal portion are fitted between the microphone device and the recording device. The connection and the connection by fitting between the power input terminal portion and the power supply terminal portion are performed simultaneously, and the microphone device can be mounted on the recording device ,
The switching unit is a recording system that switches the function of the power supply terminal unit from a power receiving function to a power feeding function in response to the microphone device being attached to the recording device .   The connection between the power input terminal unit and the power supply terminal unit supplies power to the amplification unit of the microphone device, and the audio signal from the microphone unit is amplified by the amplification unit and output from the signal output terminal unit. The recording system according to claim 1. The microphone device is
When power is supplied to the power input terminal unit, the audio signal from the microphone unit is amplified by the amplification unit and output from the signal output terminal unit,
Recording system according to claim 1 wherein if no power is supplied to the power input terminal portion, to be outputted from the signal output terminal unit without amplifying the audio signal from the microphone unit. The recording system according to claim 3, wherein a positional relationship between the signal output terminal unit and the power input terminal unit is variable on the first surface . The recording system according to claim 3 or 4, wherein the power input terminal portion is rotatable around an axis perpendicular or parallel to the first surface . The recording apparatus used for the recording system of any one of Claims 1-5. A microphone device used in the recording system according to claim 1. A microphone unit for converting sound into an electrical sound signal, an amplification unit for amplifying the sound signal from the microphone unit, and a first surface provided for outputting the sound signal amplified by the amplification unit In a recording apparatus connected to a microphone device including a signal output terminal unit and a power input terminal unit that is provided on the first surface and receives power supplied to the amplification unit,
A signal input terminal provided on the second surface for inputting an audio signal to be recorded;
A power supply terminal portion provided on the second surface and capable of switching between a power supply function for supplying power to the outside and a power reception function;
Switching means for switching between the power feeding function and the power receiving function;
With
In the microphone device and the recording device, the first surface and the second surface are opposed to each other, and the signal output terminal portion and the signal input terminal portion are fitted between the microphone device and the recording device. The connection and the connection by fitting between the power input terminal portion and the power supply terminal portion are performed simultaneously, and the microphone device can be mounted on the recording device,
The switching unit is a recording device that switches the function of the power supply terminal unit from a power receiving function to a power feeding function in response to the microphone device being attached to the recording device. A microphone unit that converts sound into an electrical sound signal;
An amplifying unit for amplifying an audio signal from the microphone unit;
A signal output terminal unit provided on the first surface for outputting the audio signal amplified by the amplifying unit, and a power input provided on the first surface and supplied with power supplied to the amplifying unit In a microphone device comprising a terminal portion,
The microphone device is used connected to a recording device,
The recording device is provided on a second surface and is provided with a signal input terminal portion for inputting a sound signal to be recorded, a power supply function provided on the second surface and for supplying power to the outside, A power supply terminal unit that can be switched between functions, and switching means for switching between the power feeding function and the power receiving function,
In the microphone device and the recording device, the first surface and the second surface are opposed to each other, and the signal output terminal portion and the signal input terminal portion are fitted between the microphone device and the recording device. The connection and the connection by fitting between the power input terminal portion and the power supply terminal portion are performed simultaneously, and the microphone device can be mounted on the recording device,
The switching device is a microphone device that switches the function of the power supply terminal unit from a power receiving function to a power feeding function in response to the microphone device being attached to the recording device.

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