JPS5555225A - Device for measurement - Google Patents
Device for measurementInfo
- Publication number
- JPS5555225A JPS5555225A JP12795778A JP12795778A JPS5555225A JP S5555225 A JPS5555225 A JP S5555225A JP 12795778 A JP12795778 A JP 12795778A JP 12795778 A JP12795778 A JP 12795778A JP S5555225 A JPS5555225 A JP S5555225A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- voltage
- signal
- terminal voltage
- circuit
- 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
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Indicating Measured Values (AREA)
Abstract
PURPOSE: To remove measured data of errors due to the unnecessary radiation of a digital processing circuit, the ripple of power voltage or the like, by providing an exclusive power supply battery for an input signal amplifier amplification circuit, digitizing the terminal voltage of the battery and indicating the digitized voltage.
CONSTITUTION: A tone burst signal is applied to a loudspeaker 2 placed in a room 1. The sound signal of the loudspeaker is caught by a microphone 3 to obtain a signal. This signal is envelope-detected to obtain a reverberation curve. A battery 31 is used to energize a microphone amplifier 7. A circuit 32 is provided to always check the terminal voltage of the battery 31. The circuit 32 sample-holds the terminal voltage of the battery 31 at 39. The sampled voltage is converted from an analogue quantity to a digital one at 18. The digitized terminal voltage is indicated by a line printer 27.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12795778A JPS5555225A (en) | 1978-10-18 | 1978-10-18 | Device for measurement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12795778A JPS5555225A (en) | 1978-10-18 | 1978-10-18 | Device for measurement |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5555225A true JPS5555225A (en) | 1980-04-23 |
Family
ID=14972830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12795778A Pending JPS5555225A (en) | 1978-10-18 | 1978-10-18 | Device for measurement |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5555225A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344067A (en) * | 1976-10-04 | 1978-04-20 | Toyo Kogyo Co | Tachometer provided with function of indicating battery voltage |
-
1978
- 1978-10-18 JP JP12795778A patent/JPS5555225A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344067A (en) * | 1976-10-04 | 1978-04-20 | Toyo Kogyo Co | Tachometer provided with function of indicating battery voltage |
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