JPS5582021A - Automatic tester for sound volume - Google Patents
Automatic tester for sound volumeInfo
- Publication number
- JPS5582021A JPS5582021A JP14686978A JP14686978A JPS5582021A JP S5582021 A JPS5582021 A JP S5582021A JP 14686978 A JP14686978 A JP 14686978A JP 14686978 A JP14686978 A JP 14686978A JP S5582021 A JPS5582021 A JP S5582021A
- Authority
- JP
- Japan
- Prior art keywords
- propriety
- bell
- sound
- drawer
- judgement
- 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
Abstract
PURPOSE: To enable to test the sound of bell of telepbone set, especially large amount of tested sound producing bodies, automatically, quickly and accurately.
CONSTITUTION: When a bell on assembling line comes near the test unit, the operator picks up it, mounts it in the drawer, and the start button on the operation panel is depressed. The drawer is contained in the sound proof box, and the drive section 10 produces the signal in a given frequency and voltage under the predetermined bell drive conditions to activate the bell. After this sound is detected with the microphone 3 and converted into a voltage, it is inputted to the preamplifier via the switch 7 and converted into DC at the rectifying circuit 6. The output of rectifier is made to logarithm with the logarithmic amplifier 8, compared with the reference voltage at the propriety judgement circuit 9 for the judgement of propriety. The result of the propriety is given to the control section 12 to illuminate the propriety lamp on the operation panel. At the same time, the drive of the moving mechanism is started, the drawer is drawn out from the sound proof box, and a series of propriety judgement test is finished.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14686978A JPS5582021A (en) | 1978-11-28 | 1978-11-28 | Automatic tester for sound volume |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14686978A JPS5582021A (en) | 1978-11-28 | 1978-11-28 | Automatic tester for sound volume |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5582021A true JPS5582021A (en) | 1980-06-20 |
Family
ID=15417398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14686978A Pending JPS5582021A (en) | 1978-11-28 | 1978-11-28 | Automatic tester for sound volume |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5582021A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61147937U (en) * | 1985-03-07 | 1986-09-12 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913084A (en) * | 1973-03-26 | 1975-10-14 | Wisconsin Alumni Res Found | Noise quality detector for electric motors or other machines |
-
1978
- 1978-11-28 JP JP14686978A patent/JPS5582021A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913084A (en) * | 1973-03-26 | 1975-10-14 | Wisconsin Alumni Res Found | Noise quality detector for electric motors or other machines |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61147937U (en) * | 1985-03-07 | 1986-09-12 | ||
JPH0330837Y2 (en) * | 1985-03-07 | 1991-06-28 |
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