FR32468E - Improvements in the production of phonograms - Google Patents
Improvements in the production of phonogramsInfo
- Publication number
- FR32468E FR32468E FR32468DA FR32468E FR 32468 E FR32468 E FR 32468E FR 32468D A FR32468D A FR 32468DA FR 32468 E FR32468 E FR 32468E
- Authority
- FR
- France
- Prior art keywords
- phonograms
- production
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
- H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US604225XA | 1924-07-29 | 1924-07-29 | |
US65472A US1599418A (en) | 1925-10-28 | 1925-10-28 | Sound-reproducing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR32468E true FR32468E (en) | 1928-01-24 |
Family
ID=26739901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR32468D Expired FR32468E (en) | 1924-07-29 | 1926-10-25 | Improvements in the production of phonograms |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR32468E (en) |
-
1926
- 1926-10-25 FR FR32468D patent/FR32468E/en not_active Expired
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