JPS5555224A - Device for measuring acoustic characteristic - Google Patents

Device for measuring acoustic characteristic

Info

Publication number
JPS5555224A
JPS5555224A JP12795678A JP12795678A JPS5555224A JP S5555224 A JPS5555224 A JP S5555224A JP 12795678 A JP12795678 A JP 12795678A JP 12795678 A JP12795678 A JP 12795678A JP S5555224 A JPS5555224 A JP S5555224A
Authority
JP
Japan
Prior art keywords
data
ram
signal
room
storage place
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
JP12795678A
Other languages
Japanese (ja)
Inventor
Tadashi Takise
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 JP12795678A priority Critical patent/JPS5555224A/en
Publication of JPS5555224A publication Critical patent/JPS5555224A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To automate the pigeonholing and calculation of measured data and remove errors from the data, by providing a plurality of storage regions in an RAM for storing the data.
CONSTITUTION: A tone burst signal is sequentially read from an ROM 4 and applied to a loudspeaker 2 placed in a room 1. The sound signal of the loudspeaker is caught by a microphone 3 to obtain a signal. This signal is envelope-detected by a circuit comprising a peak detection circuit 8, a variable gain amplifier 9, multiplication-type D-A converters 11a, 11b, LPF's 12a, 12b, squaring units 13a, 13b and an adder 14, thereby obtaining the reverberation curve of the room 1. Measured data at each measured frequency are temporarily stored at a first storage place of an RAM 24. Wherever m times of measurement at one place in the room 1 are finished, the measured data are transferred to a second storage place of the RAM 24 and summed up and the data at the first storage place are erased.
COPYRIGHT: (C)1980,JPO&Japio
JP12795678A 1978-10-18 1978-10-18 Device for measuring acoustic characteristic Pending JPS5555224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12795678A JPS5555224A (en) 1978-10-18 1978-10-18 Device for measuring acoustic characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12795678A JPS5555224A (en) 1978-10-18 1978-10-18 Device for measuring acoustic characteristic

Publications (1)

Publication Number Publication Date
JPS5555224A true JPS5555224A (en) 1980-04-23

Family

ID=14972804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12795678A Pending JPS5555224A (en) 1978-10-18 1978-10-18 Device for measuring acoustic characteristic

Country Status (1)

Country Link
JP (1) JPS5555224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6288926A (en) * 1985-10-16 1987-04-23 Shimizu Constr Co Ltd Reverberation measuring instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119968A (en) * 1976-03-31 1977-10-07 Sony Corp Reverberation curve measuring apparatus
JPS52119970A (en) * 1976-03-31 1977-10-07 Sony Corp Sound measuring apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119968A (en) * 1976-03-31 1977-10-07 Sony Corp Reverberation curve measuring apparatus
JPS52119970A (en) * 1976-03-31 1977-10-07 Sony Corp Sound measuring apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6288926A (en) * 1985-10-16 1987-04-23 Shimizu Constr Co Ltd Reverberation measuring instrument

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