JPS6474456A - Measuring circuit for voltage crest value of acoustic signal - Google Patents
Measuring circuit for voltage crest value of acoustic signalInfo
- Publication number
- JPS6474456A JPS6474456A JP23284787A JP23284787A JPS6474456A JP S6474456 A JPS6474456 A JP S6474456A JP 23284787 A JP23284787 A JP 23284787A JP 23284787 A JP23284787 A JP 23284787A JP S6474456 A JPS6474456 A JP S6474456A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- acoustic signal
- crest value
- measuring circuit
- timer
- 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 abstract 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE:To measure the crest value of the acoustic signal with simple constitution by measuring the reference voltage excess time of the acoustic signal by using a voltage comparator and a timer and converting the time into a voltage crest value. CONSTITUTION:The acoustic wave which is converted into an electric signal by a microphone, etc., is detected by a detection part 1 and then compared with a reference voltage 4 by a voltage comparison part 3. When the input level of the acoustic signal exceeds the reference voltage, the voltage comparison part 3 outputs a high-voltage voltage. The timer part 8 measures the continuance 6 of the high-voltage voltage. A control part 9 converts the time 6 measured by the timer part 8 into the voltage crest value 7. Consequently, the voltage crest value of the acoustic signal is measured by using only one voltage comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23284787A JPS6474456A (en) | 1987-09-17 | 1987-09-17 | Measuring circuit for voltage crest value of acoustic signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23284787A JPS6474456A (en) | 1987-09-17 | 1987-09-17 | Measuring circuit for voltage crest value of acoustic signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6474456A true JPS6474456A (en) | 1989-03-20 |
Family
ID=16945737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23284787A Pending JPS6474456A (en) | 1987-09-17 | 1987-09-17 | Measuring circuit for voltage crest value of acoustic signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6474456A (en) |
-
1987
- 1987-09-17 JP JP23284787A patent/JPS6474456A/en active Pending
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