JPS5554415A - Method and device for space set averaging for reverberation waveform - Google Patents

Method and device for space set averaging for reverberation waveform

Info

Publication number
JPS5554415A
JPS5554415A JP12717978A JP12717978A JPS5554415A JP S5554415 A JPS5554415 A JP S5554415A JP 12717978 A JP12717978 A JP 12717978A JP 12717978 A JP12717978 A JP 12717978A JP S5554415 A JPS5554415 A JP S5554415A
Authority
JP
Japan
Prior art keywords
circuit
register
inputted
contents
timing
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
JP12717978A
Other languages
Japanese (ja)
Inventor
Fukuji Kawakami
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP12717978A priority Critical patent/JPS5554415A/en
Publication of JPS5554415A publication Critical patent/JPS5554415A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To eliminate dispersion in precision at every measurement point by converting many impulse responses into digital signals and then by processing them.
CONSTITUTION: Impulse responses of microphone 4-1, sampled at the timing of signal C-1 of timing control circuit 25 and digitized by A/D converter circuit 7, are sequentially accumulated by accumulator 9 after passing through square-law circuit 8 and sent to register 10 in sequence at the timing of signal C-2, and the contents of register 10 are written at addresses of RAM11 and also inputted to register 12. The contents of register 12 are inputted to subtracter circuit 14 by way of latch circuit 13 and results of sequential subtraction from contents of RAM11 are inputted to display/recorder 19 from interface circuit 18 through RAM17. After data are selected by monitoring the reverberation waveform of unit 19, the microphone is changed over and the same process is repeated. Therefore, precision dispersion at every measurement point can be eliminated.
COPYRIGHT: (C)1980,JPO&Japio
JP12717978A 1978-10-16 1978-10-16 Method and device for space set averaging for reverberation waveform Pending JPS5554415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12717978A JPS5554415A (en) 1978-10-16 1978-10-16 Method and device for space set averaging for reverberation waveform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12717978A JPS5554415A (en) 1978-10-16 1978-10-16 Method and device for space set averaging for reverberation waveform

Publications (1)

Publication Number Publication Date
JPS5554415A true JPS5554415A (en) 1980-04-21

Family

ID=14953618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12717978A Pending JPS5554415A (en) 1978-10-16 1978-10-16 Method and device for space set averaging for reverberation waveform

Country Status (1)

Country Link
JP (1) JPS5554415A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49119674A (en) * 1973-03-15 1974-11-15
JPS5146382B1 (en) * 1971-01-15 1976-12-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146382B1 (en) * 1971-01-15 1976-12-08
JPS49119674A (en) * 1973-03-15 1974-11-15

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