IL54206A0 - Process for the preparation of , -dialkoxycarboxylic acid derivatives - Google Patents
Process for the preparation of , -dialkoxycarboxylic acid derivativesInfo
- Publication number
- IL54206A0 IL54206A0 IL54206A IL5420678A IL54206A0 IL 54206 A0 IL54206 A0 IL 54206A0 IL 54206 A IL54206 A IL 54206A IL 5420678 A IL5420678 A IL 5420678A IL 54206 A0 IL54206 A0 IL 54206A0
- Authority
- IL
- Israel
- Prior art keywords
- dialkoxycarboxylic
- preparation
- acid derivatives
- derivatives
- acid
- Prior art date
Links
- 239000002253 acid Substances 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only using transducers reproducing the same frequency band
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Stereophonic System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772709952 DE2709952A1 (en) | 1977-03-08 | 1977-03-08 | Stereo loudspeaker system with two boxes - has two oppositely directed speakers with opposite polarity per box, with each box placed in front of reflecting wall |
Publications (1)
Publication Number | Publication Date |
---|---|
IL54206A0 true IL54206A0 (en) | 1978-06-15 |
Family
ID=6003017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL54206A IL54206A0 (en) | 1977-03-08 | 1978-03-06 | Process for the preparation of , -dialkoxycarboxylic acid derivatives |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2709952A1 (en) |
IL (1) | IL54206A0 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4249037A (en) * | 1978-11-08 | 1981-02-03 | Dexter John L | Pyramid loudspeakers with twin cross-phased mid-range speakers |
US4369335A (en) * | 1980-07-21 | 1983-01-18 | Petroff Michael L | Two-channel, four loudspeaker-component enhanced sterophonic system |
US4596034A (en) * | 1981-01-02 | 1986-06-17 | Moncrieff J Peter | Sound reproduction system and method |
US5553147A (en) * | 1993-05-11 | 1996-09-03 | One Inc. | Stereophonic reproduction method and apparatus |
-
1977
- 1977-03-08 DE DE19772709952 patent/DE2709952A1/en active Pending
-
1978
- 1978-03-06 IL IL54206A patent/IL54206A0/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2709952A1 (en) | 1978-09-14 |
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