JPS55154423A - Reverberation characteristic measuring apparatus - Google Patents
Reverberation characteristic measuring apparatusInfo
- 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
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
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) |
-
1979
- 1979-05-19 JP JP6210479A patent/JPH0228811B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0228811B2 (en) | 1990-06-26 |
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