JPH0448713U

JPH0448713U -

Info

Publication number: JPH0448713U
Application number: JP9011490U
Authority: JP
Priority date: 1990-08-30
Filing date: 1990-08-30
Publication date: 1992-04-24

Description

[Brief explanation of drawings]

第１図乃至第５図はこの考案に係る自動音量調
整のヘツドホンステレオ装置の実施例を示し、第
１図はマイクロフオン取付け位置を示す図、第２
図は音量コントロールにＶＣＡ（電圧制御増幅器
）を用いた例のブロツク図、第３図は音量コント
ロールに電子ボリユームを用いた例のブロツク図
、第４図は自動音量調整と手動音量調整とを切替
えるようにした例のブロツク図、第５図は自動音
量調整範囲を３段階に切替えるようにした例のブ
ロツク図である。第６図は従来例のヘツドホンス
テレオ装置の音量コントロールのためのボリユー
ムの位置を示す図である。主な符号の説明、１……ヘツドホンステレオ装
置本体部、２……マイクロフオンＡ、３……マイ
クロフオンＢ、４……マイクロフオンＣ、５……
マイクロフオンＤ、６……マイクロフオンＥ、７
……リモート操作部、８……ヘツドホンスピーカ
部、９……マイクロフオン接続プラグ、１０……
ヘツドホン部接続プラグ。 1 to 5 show an embodiment of a headphone stereo device with automatic volume adjustment according to this invention, and FIG. 1 is a diagram showing the microphone mounting position, and FIG.
The figure shows a block diagram of an example in which a VCA (voltage controlled amplifier) is used for volume control, Figure 3 is a block diagram of an example in which an electronic volume is used for volume control, and Figure 4 shows switching between automatic volume adjustment and manual volume adjustment. FIG. 5 is a block diagram of an example in which the automatic volume adjustment range is switched to three levels. FIG. 6 is a diagram showing the position of a volume control for volume control in a conventional headphone stereo device. Explanation of main symbols: 1...Headphone stereo device main unit, 2...Microphone A, 3...Microphone B, 4...Microphone C, 5...
Microphone D, 6... Microphone E, 7
...Remote operation section, 8...Headphone speaker section, 9...Microphone connection plug, 10...
Headphone connection plug.

Claims

[Claims for Utility Model Registration] 1. Cassette tape playback unit or C of the audio source
D A main unit consisting of a playback section, an amplifier section, and a microcomputer that controls these; an external remote operation section to which the audio signal output from the amplifier section is connected via a connection terminal; In the headphone stereo device, the headphone stereo device is provided with a microphone, and the volume of the sound played by the headphone is automatically adjusted according to the signal input from the microphone. A headphone stereo device with automatic volume adjustment. 2. A headphone stereo device according to claim 1, wherein a built-in microphone is provided in the main body of the headphone stereo device, and the volume of the sound reproduced by the headphone is automatically adjusted based on a signal input from the microphone. Headphone stereo device with automatic volume adjustment. 3. A claim characterized in that a detachable microphone is provided on the outside of the main body of a headphone stereo device, and the volume of the sound played by the headphone is automatically adjusted based on the signal input from the microphone. The headphone stereo device with automatic volume adjustment according to item 1. 4 A built-in microphone is provided in a remote control section provided between the main body of the headphone stereo device and the headphone section, and the volume of music played from the headphone is automatically adjusted based on the signal input from the microphone. 2. A headphone stereo device with automatic volume adjustment according to claim 1, characterized in that it is configured as follows. 5. A removable microphone is provided in the cord connecting the main body of the headphone stereo device and the headphone, and the volume of the sound played by the headphone is automatically adjusted based on the signal input from the microphone. 2. A headphone stereo device with automatic volume adjustment according to claim 1. 6. A claim characterized in that a headphone stereo device is provided with a built-in microphone in the speaker section of the headphone section, and is configured to automatically adjust the volume of the sound reproduced from the headphone based on a signal input from the microphone. The headphone stereo device with automatic volume adjustment according to item 1. 7 VC controlled by a microcomputer built into the main body of the headphone stereo device
7. The headphone stereo device with automatic volume adjustment according to 1, 2, 3, 4, 5, or 6, characterized in that it is provided with A (voltage control amplifier) and is configured to adjust the volume of the reproduction from the headphone section. 8. Claim 1, characterized in that the main body of the headphone stereo device is provided with an electronic volume circuit controlled by a microcomputer so as to adjust the volume of music reproduced from the headphone section.
, 2, 3, 4, 5 or 6, the headphone stereo device with automatic volume adjustment. 9. The main body of the headphone stereo device is provided with a switch to select whether or not to adjust the volume based on the signal from the microphone, so that it is possible to switch whether or not to automatically adjust the volume reproduced from the headphone unit. Claims 1, 2,
The headphone stereo device with automatic volume adjustment according to 3, 4, 5, 6, 7 or 8. 10. Claims 1 and 2, characterized in that the main body of the headphone stereo device is provided with a switch for changing the volume adjustment range based on the signal from the microphone, so that the volume of the sound reproduced from the headphone section can be set in three levels. 10. The headphone stereo device with automatic volume adjustment according to 3, 4, 5, 6, 7, 8 or 9.