JPS56119056A - Double resonance type sound absorbing concrete block - Google Patents

Double resonance type sound absorbing concrete block

Info

Publication number
JPS56119056A
JPS56119056A JP2239980A JP2239980A JPS56119056A JP S56119056 A JPS56119056 A JP S56119056A JP 2239980 A JP2239980 A JP 2239980A JP 2239980 A JP2239980 A JP 2239980A JP S56119056 A JPS56119056 A JP S56119056A
Authority
JP
Japan
Prior art keywords
sound absorbing
concrete block
resonance type
type sound
double resonance
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
JP2239980A
Other languages
Japanese (ja)
Inventor
Takehiro Isei
Tadashi Suzuki
Makoto Tanaka
Minoru Kiyomasa
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP2239980A priority Critical patent/JPS56119056A/en
Publication of JPS56119056A publication Critical patent/JPS56119056A/en
Pending legal-status Critical Current

Links

JP2239980A 1980-02-25 1980-02-25 Double resonance type sound absorbing concrete block Pending JPS56119056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2239980A JPS56119056A (en) 1980-02-25 1980-02-25 Double resonance type sound absorbing concrete block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2239980A JPS56119056A (en) 1980-02-25 1980-02-25 Double resonance type sound absorbing concrete block

Publications (1)

Publication Number Publication Date
JPS56119056A true JPS56119056A (en) 1981-09-18

Family

ID=12081579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2239980A Pending JPS56119056A (en) 1980-02-25 1980-02-25 Double resonance type sound absorbing concrete block

Country Status (1)

Country Link
JP (1) JPS56119056A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4811234U (en) * 1971-06-22 1973-02-08
JPS5342974A (en) * 1976-09-29 1978-04-18 Reppas George S Combined bed and desk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4811234U (en) * 1971-06-22 1973-02-08
JPS5342974A (en) * 1976-09-29 1978-04-18 Reppas George S Combined bed and desk

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