JPS5560825A - Reverberation time measuring instrument - Google Patents
Reverberation time measuring instrumentInfo
- 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
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
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) |
-
1978
- 1978-10-31 JP JP13401978A patent/JPS5560825A/en active Pending
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