JPS5560823A - Reverberation time measuring instrument - Google Patents
Reverberation time measuring instrumentInfo
- Publication number
- JPS5560823A JPS5560823A JP13401678A JP13401678A JPS5560823A JP S5560823 A JPS5560823 A JP S5560823A JP 13401678 A JP13401678 A JP 13401678A JP 13401678 A JP13401678 A JP 13401678A JP S5560823 A JPS5560823 A JP S5560823A
- Authority
- JP
- Japan
- Prior art keywords
- reverberation time
- over
- sound energy
- time measuring
- lamps
- 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 prevent an erroneous measurement, an output to be used for alarm is detected in the specific area in a reverberation time measuring circuit.
CONSTITUTION: Sound energy from the squarer 5 is processed by the over noise detector 19 and the amplifier saturation circuit 18 having a threshold-set-comparator, a hold circuit, etc. This permits the detection of saturation of the pre-amplifier 2 connected to the microphone 2, and the finding of excessive sound energy due to superimposed noise. The detected results are shown as alarm lightings of the lamps L18, L19. Similarly the lamps L20, L21 are used to indicate alarms for an over and under sound energy compared to the specified value, through the detectors 20, 21, etc. for over and under integrated outputs. This prevents an erroneous measurement due to a false signal processing and permits a reverberation time measurement with a little error.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13401678A JPS5560823A (en) | 1978-10-31 | 1978-10-31 | Reverberation time measuring instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13401678A JPS5560823A (en) | 1978-10-31 | 1978-10-31 | Reverberation time measuring instrument |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5560823A true JPS5560823A (en) | 1980-05-08 |
JPS6114446B2 JPS6114446B2 (en) | 1986-04-18 |
Family
ID=15118395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13401678A Granted JPS5560823A (en) | 1978-10-31 | 1978-10-31 | Reverberation time measuring instrument |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5560823A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013138374A (en) * | 2011-12-28 | 2013-07-11 | Yamaha Corp | Reverberation analyzer |
-
1978
- 1978-10-31 JP JP13401678A patent/JPS5560823A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013138374A (en) * | 2011-12-28 | 2013-07-11 | Yamaha Corp | Reverberation analyzer |
Also Published As
Publication number | Publication date |
---|---|
JPS6114446B2 (en) | 1986-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE58908097D1 (en) | Fire alarm system. | |
GB1508245A (en) | Moisture indicating apparatus | |
JPS5560823A (en) | Reverberation time measuring instrument | |
NO169921C (en) | DEVICE FOR DISPOSAL OF VESSELS | |
JPS53139512A (en) | Information detector | |
JPS5491009A (en) | Audio recognition unit | |
JPS55113949A (en) | Flaw detector for cast iron pipe | |
ES2011384A6 (en) | Device for detecting the operation of a condensed-water bleed plug | |
JPS6489895A (en) | Microphone device | |
JPS5760938A (en) | Method of vocal alarming for vehicle | |
JPS55164355A (en) | Ae wave discriminating unit | |
JPS5658645A (en) | Flaw detecting device | |
JPS5542018A (en) | Operational check for sound release type measuring system | |
JPS5739367A (en) | Video signal normalizing circuit of sonar device | |
JPS56168519A (en) | Detecting method for damage of sun gear | |
JPS57164605A (en) | Amplifier | |
JPS54136386A (en) | Acoustic diagnosis abnormality detecting device | |
JPS5354000A (en) | Detection signal processing circuit of photoelectric type smoke detectors | |
JPS55114031A (en) | Detector for pulse absence | |
JPS55143454A (en) | Level detector | |
JPS5555226A (en) | Method of automatically identifying sound source | |
JPS5788357A (en) | Detector for gas leakage | |
JPS5635054A (en) | Detecting method of removed part | |
JPS5764128A (en) | Loose parts monitor | |
JP2743500B2 (en) | Sensitivity inspection device |