FR1240240A - Calibration device - Google Patents
Calibration deviceInfo
- Publication number
- FR1240240A FR1240240A FR808172A FR808172A FR1240240A FR 1240240 A FR1240240 A FR 1240240A FR 808172 A FR808172 A FR 808172A FR 808172 A FR808172 A FR 808172A FR 1240240 A FR1240240 A FR 1240240A
- Authority
- FR
- France
- Prior art keywords
- calibration device
- calibration
- 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
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- 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
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1240240XA | 1958-10-27 | 1958-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1240240A true FR1240240A (en) | 1960-09-02 |
Family
ID=22412316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR808172A Expired FR1240240A (en) | 1958-10-27 | 1959-10-22 | Calibration device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1240240A (en) |
-
1959
- 1959-10-22 FR FR808172A patent/FR1240240A/en not_active Expired
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