JPS55154423A - Reverberation characteristic measuring apparatus - Google Patents

Reverberation characteristic measuring apparatus

Info

Publication number
JPS55154423A
JPS55154423A JP6210479A JP6210479A JPS55154423A JP S55154423 A JPS55154423 A JP S55154423A JP 6210479 A JP6210479 A JP 6210479A JP 6210479 A JP6210479 A JP 6210479A JP S55154423 A JPS55154423 A JP S55154423A
Authority
JP
Japan
Prior art keywords
time
reverberation
measuring apparatus
reverberation characteristic
value
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.)
Granted
Application number
JP6210479A
Other languages
Japanese (ja)
Other versions
JPH0228811B2 (en
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 JP6210479A priority Critical patent/JPH0228811B2/en
Publication of JPS55154423A publication Critical patent/JPS55154423A/en
Publication of JPH0228811B2 publication Critical patent/JPH0228811B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To enable the accurate and simple measurement of reverberation time by operating the reverberation time based on the time detected by an irregular fluctuation detecting circuit and the output value of a cumulating circuit at this time.
CONSTITUTION: The reverberation time measuring apparatus is constituted by a reverberation characteristic measuring device 30 and reverberation time operating part 31, stores the value I0 at t=0 of the reverberation characteristic curve by a latch 32, stores the value ITR at the time t=TR when the reverberation characteristic curve starts irregular fluctuations by a latch 33, measures the time TR by a counter circuit 34, operates the reverberation time by an arithmetic unit 35 based on these values I0, ITR and time TR and displays the reverberation time thus obtained by a display device 36.
COPYRIGHT: (C)1980,JPO&Japio
JP6210479A 1979-05-19 1979-05-19 ZANKYOTOKUSEISOKUTEISOCHI Expired - Lifetime JPH0228811B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6210479A JPH0228811B2 (en) 1979-05-19 1979-05-19 ZANKYOTOKUSEISOKUTEISOCHI

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6210479A JPH0228811B2 (en) 1979-05-19 1979-05-19 ZANKYOTOKUSEISOKUTEISOCHI

Publications (2)

Publication Number Publication Date
JPS55154423A true JPS55154423A (en) 1980-12-02
JPH0228811B2 JPH0228811B2 (en) 1990-06-26

Family

ID=13190401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6210479A Expired - Lifetime JPH0228811B2 (en) 1979-05-19 1979-05-19 ZANKYOTOKUSEISOKUTEISOCHI

Country Status (1)

Country Link
JP (1) JPH0228811B2 (en)

Also Published As

Publication number Publication date
JPH0228811B2 (en) 1990-06-26

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