JPH0429243U - - Google Patents
Info
- Publication number
- JPH0429243U JPH0429243U JP7180690U JP7180690U JPH0429243U JP H0429243 U JPH0429243 U JP H0429243U JP 7180690 U JP7180690 U JP 7180690U JP 7180690 U JP7180690 U JP 7180690U JP H0429243 U JPH0429243 U JP H0429243U
- Authority
- JP
- Japan
- Prior art keywords
- digital
- signal
- volume
- input
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Analogue/Digital Conversion (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案の一実施例によるデイジタルオ
ーデイオ用音量可変装置のブロツク構成図、第２
図は従来の装置のブロツク構成図、第３図はＤＡ
コンバータにおけるリフアレンス電圧対出力電圧
の特性図である。
１……デイジタル信号処理プロセツサ、２……
デイジタルフイルタ、３，４……ＤＡコンバータ
、５……マイコン。
FIG. 1 is a block diagram of a digital audio volume variable device according to an embodiment of the present invention, and FIG.
The figure is a block diagram of a conventional device, and Figure 3 is a DA
FIG. 3 is a characteristic diagram of reference voltage versus output voltage in a converter. 1...Digital signal processing processor, 2...
Digital filter, 3, 4...DA converter, 5...microcomputer.
Claims (1)
に、オーデイオ出力の音量を可変する音量可変装
置において、 デイジタル信号処理プロセツサの出力が入力さ
れるデイジタルフイルタと、このデイジタルフイ
ルタの出力が入力され、デイジタル−アナログ変
換するＤＡコンバータと、外部からの音量を可変
する信号入力を受けて所定のアナログ電圧を発生
し、この電圧を前記ＤＡコンバータのリフアレン
ス電圧として供給するマイクロコンピユータとを
備えたことを特徴とするデイジタルオーデイオ用
音量可変装置。[Claims for Utility Model Registration] A volume control device that converts a digital signal into an analog signal and changes the volume of an audio output, comprising: a digital filter to which the output of a digital signal processor is input; a DA converter that receives the input signal and performs digital-to-analog conversion; and a microcomputer that receives a signal input from the outside that changes the volume, generates a predetermined analog voltage, and supplies this voltage as a reference voltage to the DA converter. A volume variable device for digital audio, characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180690U JPH0429243U (en) | 1990-07-04 | 1990-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180690U JPH0429243U (en) | 1990-07-04 | 1990-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0429243U true JPH0429243U (en) | 1992-03-09 |
Family
ID=31609169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7180690U Pending JPH0429243U (en) | 1990-07-04 | 1990-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429243U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293011A (en) * | 1988-05-20 | 1989-11-27 | Toshiba Corp | Variable gain d/a converter |
| JPH024326B2 (en) * | 1986-12-01 | 1990-01-26 | Nippon Rokaki Kk |
-
1990
- 1990-07-04 JP JP7180690U patent/JPH0429243U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH024326B2 (en) * | 1986-12-01 | 1990-01-26 | Nippon Rokaki Kk | |
| JPH01293011A (en) * | 1988-05-20 | 1989-11-27 | Toshiba Corp | Variable gain d/a converter |