JPH0446714U

JPH0446714U -

Info

Publication number: JPH0446714U
Application number: JP8748990U
Authority: JP
Priority date: 1990-08-23
Filing date: 1990-08-23
Publication date: 1992-04-21

Description

[Brief explanation of drawings]

第１図乃至第４図はこの考案に係る電子ボリユ
ーム回路の実施例を示し、第１図は機能ブロツク
図、第２図はハードの構成ブロツク図、第３図は
フローチヤート、第４図は他の応用例のハードの
ブロツク図である。第５図は従来例の構成ブロツ
ク図である。主な符号の説明、１……増幅器、１ａ……音量
調整部、１ｂ……トーン調整部、２……マイクロ
コンピユータ、３……ハイカツトフイルタ。 1 to 4 show an embodiment of the electronic volume circuit according to this invention. FIG. 1 is a functional block diagram, FIG. 2 is a hardware configuration block diagram, FIG. 3 is a flowchart, and FIG. FIG. 7 is a hardware block diagram of another application example. FIG. 5 is a block diagram of a conventional example. Explanation of main symbols: 1...Amplifier, 1a...Volume adjustment section, 1b...Tone adjustment section, 2...Microcomputer, 3...High-cut filter.

Claims

[Claims for Utility Model Registration] 1. In an electronic volume circuit consisting of a volume adjustment section, a tone adjustment section, and a microcomputer that controls the two adjustment sections using serial data, the tone adjustment section is placed after the volume adjustment section. a volume adjustment start detecting means disposed in the volume adjustment section for detecting a volume variable signal to the volume adjustment section; a tone high frequency attenuating means for attenuating the tone high range of the tone adjustment section when the volume adjustment starts; The volume adjustment end detection means detects that the variable signal has stopped, and the tone high range attenuation canceling means releases the tone high range attenuation of the tone adjustment section when the volume adjustment is completed, and the volume adjustment start detection means detects when the volume adjustment is completed. When the start of volume adjustment of the tone adjustment section is detected, the tone high range attenuation means attenuates the high tone range of the tone adjustment section, and when the volume adjustment end detection means detects the end of the volume adjustment, the tone high range attenuation canceling means An electronic volume circuit characterized in that it is configured to return tone adjustment to its original state and remove noise components generated during volume adjustment. 2. A high-cut filter circuit that can be turned on and off is provided after the volume adjustment section, and the high-cut filter circuit is turned on during volume adjustment to remove noise components generated during volume adjustment of the volume adjustment section. The electronic volume circuit according to claim 1, characterized in that: