JPS5560825A - Reverberation time measuring instrument - Google Patents

Reverberation time measuring instrument

Info

Publication number
JPS5560825A
JPS5560825A JP13401978A JP13401978A JPS5560825A JP S5560825 A JPS5560825 A JP S5560825A JP 13401978 A JP13401978 A JP 13401978A JP 13401978 A JP13401978 A JP 13401978A JP S5560825 A JPS5560825 A JP S5560825A
Authority
JP
Japan
Prior art keywords
processed
reverberation time
sound energy
circuits
devider
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
JP13401978A
Other languages
Japanese (ja)
Inventor
Osamu Yamaguchi
Takayoshi Hirata
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 JP13401978A priority Critical patent/JPS5560825A/en
Publication of JPS5560825A publication Critical patent/JPS5560825A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reverberation time to be measured and displayed without using a devider, the values of sound energy integrated for different periods are processed by substractors and logarithmic circuits, etc., and the processed values are indicated on a specifically scaled meter.
CONSTITUTION: In response to sound energy emitted from the microphone 1 and processed by the squarer 5, the control signal generator 10 emits signals to regulate the switching of the gate circuits 8a and 8b. This allows the output from the integrator 8 to be held by the hold circuits 9a and 9b as voltages of two different sound energy with different integration times corresponding to the sound energy. The hold voltages are processed by the substractor 11, the logarithmic amplifiers 12a and 12b, the substractor 13. This allows a signal inversely proportional to reverberation time to be applied to the display 14. Accordingly, the display 14, if given a meter scale indicating the reversal of the pointer swing, enables to provide for a direct indication of the reverberation time, without using a devider.
COPYRIGHT: (C)1980,JPO&Japio
JP13401978A 1978-10-31 1978-10-31 Reverberation time measuring instrument Pending JPS5560825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13401978A JPS5560825A (en) 1978-10-31 1978-10-31 Reverberation time measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13401978A JPS5560825A (en) 1978-10-31 1978-10-31 Reverberation time measuring instrument

Publications (1)

Publication Number Publication Date
JPS5560825A true JPS5560825A (en) 1980-05-08

Family

ID=15118466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13401978A Pending JPS5560825A (en) 1978-10-31 1978-10-31 Reverberation time measuring instrument

Country Status (1)

Country Link
JP (1) JPS5560825A (en)

Similar Documents

Publication Publication Date Title
JPS5580061A (en) Frequency measuring apparatus
KR830003728A (en) Method of measuring object by moving probe
JPS5560825A (en) Reverberation time measuring instrument
CH622927B (en) ELECTRONIC WATCH ALLOWING THE MEASUREMENT OF THE REACTION TIME.
JPS55116291A (en) Electronic wrist watch with alarm
JPS55124010A (en) Voice outputting type measuring device
JPS537272A (en) Electronic timepiece
JPS5322757A (en) Testing apparatus of electric a ppliances
JPS5546182A (en) Flaw signal generation unit for adjustment for eddy current flaw detector
JPS5262072A (en) Device for measuring observation waveforms of oscilloscope
JPS55103414A (en) Aural output electronic measuring unit
JPS5444818A (en) Measuring instrument for pickup dimensions
JPS5560824A (en) Reverberation time measuring instrument
JPS5542018A (en) Operational check for sound release type measuring system
JPS541657A (en) Digital length measuring instrument
JPS535608A (en) Hunting characteristic measurement device
JPS5631656A (en) S/n instrument and s/n measuring method
JPS55124011A (en) Voice outputting type measuring device
JPS5376888A (en) Concentration measuring apparatus
JPS53104280A (en) Stopwatch
JPS55162068A (en) Measuring device for transmission characteristic
JPS53106591A (en) Dosimeter
JPS53104277A (en) Electronic watch
JPS5256568A (en) Electronic timepiece
JPS57108759A (en) Voltage measuring device