JPS61187200U

JPS61187200U -

Info

Publication number: JPS61187200U
Application number: JP7180385U
Authority: JP
Priority date: 1985-05-14
Filing date: 1985-05-14
Publication date: 1986-11-21

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示すカーステレオ
の音量、音量比調整回路図、第２図は第１図にお
ける音量ボリウム位置に対するフロント側、リア
側の出力特性図、第３図は従来の回路図、第４図
および第５図は従来の出力特性図である。１……音量ボリウム、４……フエダーボリウム
、５，６……プリアンプ、８……パワーアンプ、
９，１０……スピーカ、１１……自動利得調整回
路。 Fig. 1 is a car stereo volume and volume ratio adjustment circuit diagram showing an embodiment of the present invention, Fig. 2 is a front side and rear side output characteristic diagram with respect to the volume volume position in Fig. 1, and Fig. 3 is a conventional car stereo. The circuit diagram of FIG. 4 and FIG. 5 are conventional output characteristic diagrams. 1...Volume volume, 4...Feder volume, 5, 6...Preamplifier, 8...Power amplifier,
9, 10...Speaker, 11...Automatic gain adjustment circuit.

Claims

[Scope of utility model registration request]

In an audio device in which the level of an audio signal is adjusted with a volume control, the level-adjusted audio signal is separated into multiple audio devices with different saturation levels, and the input volume ratio between each audio device is adjusted with a feeder volume. , the plurality of audio devices are saturated at the same adjustment position of the volume volume, and the volume volume has the same gain in a range from a zero level position to a predetermined level position, and from the predetermined level position to a saturation level position. An audio device characterized in that an audio device with a low saturation level is configured to gradually lower the gain using an automatic gain adjustment circuit.