JPH041595U - - Google Patents
Info
- Publication number
- JPH041595U JPH041595U JP4119990U JP4119990U JPH041595U JP H041595 U JPH041595 U JP H041595U JP 4119990 U JP4119990 U JP 4119990U JP 4119990 U JP4119990 U JP 4119990U JP H041595 U JPH041595 U JP H041595U
- Authority
- JP
- Japan
- Prior art keywords
- musical tone
- built
- tuner
- power supply
- predetermined value
- 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
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例に係る弦楽器用調律
器の回路構成の概略を示すブロツク図、第２図は
本考案の一実施例に係るレベル検出回路の波形と
自動電源スイツチの動作との関係を示すタイミン
グチヤートである。
１……弦楽器用調律器、２……マイクロフオン
、２Ａ……入力端子（楽音検出手段）、５……レ
ベル検出回路（電源遮断手段）、８……自動電源
スイツチ、１２……内蔵電源。
Fig. 1 is a block diagram schematically showing the circuit configuration of a string instrument tuner according to an embodiment of the present invention, and Fig. 2 shows waveforms of a level detection circuit and operation of an automatic power switch according to an embodiment of the present invention. This is a timing chart showing the relationship between 1... String instrument tuner, 2... Microphone, 2A... Input terminal (musical sound detection means), 5... Level detection circuit (power cutoff means), 8... Automatic power switch, 12... Built-in power supply.
Claims (1)
波数との音高差を表示する弦楽器用調律器におい
て、 外部からの楽音を検出する楽音検出手段と、 この楽音検出手段によつて検出した楽音の音量
が所定値以上に亘つて所定値以下であつた場合に
は上記内蔵電源からの電力供給を遮断する電源遮
断手段と、 を備えたことを特徴とする弦楽器用調律器。[Scope of Claim for Utility Model Registration] A tuner for a stringed instrument that is driven by a built-in power source and displays the difference in pitch between a measured frequency and a reference frequency, including a musical tone detecting means for detecting an external musical tone, and the musical tone detecting means. A tuner for a stringed instrument, comprising: a power cutoff means for cutting off the power supply from the built-in power supply when the volume of the detected musical tone is equal to or greater than a predetermined value and below a predetermined value. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4119990U JPH041595U (en) | 1990-04-18 | 1990-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4119990U JPH041595U (en) | 1990-04-18 | 1990-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH041595U true JPH041595U (en) | 1992-01-08 |
Family
ID=31551665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4119990U Pending JPH041595U (en) | 1990-04-18 | 1990-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH041595U (en) |
-
1990
- 1990-04-18 JP JP4119990U patent/JPH041595U/ja active Pending
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