JPS5555225A - Device for measurement - Google Patents

Device for measurement

Info

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
Application number
JP12795778A
Other languages
Japanese (ja)
Inventor
Tadashi Takise
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP12795778A priority Critical patent/JPS5555225A/en
Publication of JPS5555225A publication Critical patent/JPS5555225A/en
Pending legal-status Critical Current

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
JP12795778A 1978-10-18 1978-10-18 Device for measurement Pending JPS5555225A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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