US1950690A - Dual sound recording and reproducing apparatus - Google Patents
Dual sound recording and reproducing apparatus Download PDFInfo
- Publication number
- US1950690A US1950690A US369893A US36989329A US1950690A US 1950690 A US1950690 A US 1950690A US 369893 A US369893 A US 369893A US 36989329 A US36989329 A US 36989329A US 1950690 A US1950690 A US 1950690A
- Authority
- US
- United States
- Prior art keywords
- sound
- recording
- records
- reproducing apparatus
- sounds
- 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 - Lifetime
Links
- 230000009977 dual effect Effects 0.000 title description 6
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- ZYXYTGQFPZEUFX-UHFFFAOYSA-N benzpyrimoxan Chemical compound O1C(OCCC1)C=1C(=NC=NC=1)OCC1=CC=C(C=C1)C(F)(F)F ZYXYTGQFPZEUFX-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Definitions
- My invention relates to a means and method for recording and reproducing photographic sound records and has for its primary object the provision of a dual recording and reproducing system whereby a plurality of photographic sound records may be simultaneously recorded or reproduced upon a single film, such records being perhaps of different predetermined frequency ranges.
- Another object of my invention lies in the provision oi an apparatus for accomplishing the above result and including means whereby the elements of the dual recording or reproducing device may be properly adjustedV with respect l5 to each other.
- each of the sound records thereon limited to the frequency range of the desired sound.
- Figure 1 is a sectional plan View, partially diagrammatic in character, illustrating my invention.
- Figure 2 is a cross sectional View taken on the line 2-2 of Figure 1.
- Figure 3 is a detail. view of a section of m bearing sound records such as is employed with my invention.
- Reference character 1 may indicate a support and which may be the wall of a sound camera or reproducing apparatus. Slidably mounted within this support, as by dovetail connection 2, is a casing 3 carrying therein a pair of holders 4 and 5 Ys'idably supported within which are tubes 6 and 7 respectively. . These holders 4 and 5 are adjustable laterally toward and away from each other in the housing 3 as by means of the screw rods 8 and 9, the former being threaded through the holder 5 and having a rotatable engagement with the housing 3 and the latter being threaded through the holder a and likewise having rotatable engagement with the housing 3. As will be apparent from Figure 2, rotation of the screws S or 9 by means of the linger pieces 10 and 1l will result in moving the holders 4 or 5 with the tubes 6 and 7 toward or away from each other for proper adjustment.
- the tubes 6 and 7 may be identical in construction and comprise optical systems or units for the recording or reproduction of sound photographically.
- the tube 6 is provided adjacent one end with a condenser lens system 12, a partition 13 having a narrow elongated slit 14 therein, and at the opposite end a foscusing lens system 15.
- the tube 'l is provided with similar units, namely, the condensing lens system 16, partition 17 provided with slit 18, and the ⁇ focusing lens 19.
- a light source such as lamps 20 and 21 are provided adjacent the ends of the tubes 6 and 7 respectively.
- a film gate or guide 22 is provided for supporting and guiding a traveling nlm 23 past the ends or" the tubes 6 and r.7 opposite the lamps 20 and 21.
- the tubes may be adjusted in any suitable manner longitudinally with respect to the nlm 23 so as to sharply focus the aerial images of the slits 14 and 18 upon the nlm 23 in spaced relation and in reduced length.
- the intensity of thelamps 20 and 21 will be modulated in a well known manner by translated IOS lio
- the modulated light will thus be photographed upon the lm 23 to form the parallel spaced sound records 24 and 25.
- the translated sound waves used to modulate the intensity of the lamps 20 and 21 be limited to certain predetermined frequency ranges characteristic of or peculiar to the sounds being recorded, proper filters may be placed in the circuit to the lamps 20 and 21.
- the sound records 24 and 25 will be limited to such frequencies as are passed by the lters.
- a light sensitive device such as a photoelectric cell 26 is so positioned as to receive the modulated light passingr through the sound record 25 and a similar light sensitive device 27 is positioned to receive the modulated light passing through the sound record 24.
- These photoelectric cells act in the well known manner to translate the modulated light waves into corresponding electric impulses, which are then amplified by any of the known types of photoelectric cell ampliers and which impulses may then be passed through lters 28 and 29 respectively to an amplifier 30, the output of which is connected to a loud speaker device 31 whereby the sound records are rendered audible.
- a sound recording and reproducing apparatus comprising means for supporting a traveling lm, a pair of optical units for recording and reproducing photographic sound records, in operative relation to said lm, said units including tubular members having lenses and slits therein for passing light to spaced points on said lm, and means for adjusting said units with respect to each other and said film, said adjusting means including a slidable common support and separate holders therein for said units, said holders being movable toward and away fromeach other, whereby to predetermine the spacing of said lights on the film.
Description
F. H. OWENS March 13, 1934.
DUAL SOUND RECORDING AND REPRODUCING APPARATUS Filed June l0. 1929 Fl LTER Mail? Patented Mar. 13, 1934 DUAL SUND RECOQDING AND RERDUC- ING APPARATUS Freeman H. Owens, New York, N. Y.
Application June l0, 1929, Serial No. 369,823
A1 claim.
My invention relates to a means and method for recording and reproducing photographic sound records and has for its primary object the provision of a dual recording and reproducing system whereby a plurality of photographic sound records may be simultaneously recorded or reproduced upon a single film, such records being perhaps of different predetermined frequency ranges.
Another object of my invention, lies in the provision oi an apparatus for accomplishing the above result and including means whereby the elements of the dual recording or reproducing device may be properly adjustedV with respect l5 to each other.
As is well known in the art oi sound recording and reproducing, certain types of sound 'nave frequency ranges different from other soundsthat is--a frequency range for ordinary voice sounds is considerably less or smaller than the frequency range for instance, of music or an orchestra.
Similarly, certain instruments such as bells, wind instruments, etc. have different frequency ranges. In recording these various sounds, particularly in connection with a motion picture, with which the sound records are to be repro- ,duced synchronously, it often occurs that the recording and reproduction of these various sounds may occur at various intervals and at diierent times. It is advisable that in recording such sounds for reproduction, either with or without a motion picture, as many extraneous and disturbing sounds or noises as possible be eliminated from such recording. To accomplish this it may be entirely proper and advisable to introduce in the recording or reproducing circuits, filters adapted to pass only sound frequencies of a certain predetermined range depending upon the sounds to be recorded or reproduced.
In carrying out my invention, I make use of such lters and have provided a recording and. reproducing apparatus including filters, whereby the recording or reproduction of certain types of sounds may be limited to the frequency range peculiar to the selected sound, and provide for such recording or reproduction on a single iilm,
each of the sound records thereon limited to the frequency range of the desired sound. Of
course, these sound records may be recorded or reproduced together or separately as desired.
Other objects and advantages in detail of construction and operation will be apparent as the description now proceeds, reference being had to the gures of the accompanying drawing forming a part of this application and wherein like reference numerals indicate like parts.
In the drawing:-
Figure 1 is a sectional plan View, partially diagrammatic in character, illustrating my invention.
Figure 2 is a cross sectional View taken on the line 2-2 of Figure 1.
Figure 3 is a detail. view of a section of m bearing sound records such as is employed with my invention.
The tubes 6 and 7 may be identical in construction and comprise optical systems or units for the recording or reproduction of sound photographically. The tube 6 is provided adjacent one end with a condenser lens system 12, a partition 13 having a narrow elongated slit 14 therein, and at the opposite end a foscusing lens system 15. The tube 'l is provided with similar units, namely, the condensing lens system 16, partition 17 provided with slit 18, and the` focusing lens 19. A light source such as lamps 20 and 21 are provided adjacent the ends of the tubes 6 and 7 respectively.
A film gate or guide 22 is provided for supporting and guiding a traveling nlm 23 past the ends or" the tubes 6 and r.7 opposite the lamps 20 and 21. The tubes of course, may be adjusted in any suitable manner longitudinally with respect to the nlm 23 so as to sharply focus the aerial images of the slits 14 and 18 upon the nlm 23 in spaced relation and in reduced length.
If the apparatus is used for recording sound the intensity of thelamps 20 and 21 will be modulated in a well known manner by translated IOS lio
sound waves, and the modulated light will thus be photographed upon the lm 23 to form the parallel spaced sound records 24 and 25. If it is desired that the translated sound waves used to modulate the intensity of the lamps 20 and 21 be limited to certain predetermined frequency ranges characteristic of or peculiar to the sounds being recorded, proper filters may be placed in the circuit to the lamps 20 and 21. Thus the sound records 24 and 25 will be limited to such frequencies as are passed by the lters.
If the device is to be used for reproducing sound records already made and appearing on the lm 23, such sound records will be of course, illuminated by the light from the lamps 20 and 21, in this case of constant intensity of course, and the light passing through the sound records 0n the lm will be modulated in accordance with said records.
A light sensitive device such as a photoelectric cell 26 is so positioned as to receive the modulated light passingr through the sound record 25 and a similar light sensitive device 27 is positioned to receive the modulated light passing through the sound record 24. These photoelectric cells of course, act in the well known manner to translate the modulated light waves into corresponding electric impulses, which are then amplified by any of the known types of photoelectric cell ampliers and which impulses may then be passed through lters 28 and 29 respectively to an amplifier 30, the output of which is connected to a loud speaker device 31 whereby the sound records are rendered audible.
By this means it will be understood that even though the sound records 24 and 25 on the lm 23 were not recorded through filters as above described, but each contain in addition to particular sounds which it was desired to record, extraneous sounds or frequencies out of the range of the particular sound selected for recording, the filters 28 and 29 if properly constructed and set for the desired frequency ranges, for instance, the lter 28 being set to pass ordinary voice frequencies only and the filter 29 being set to pass only certain frequencies characteristic to some musical instrument or instruments recorded in the record 2li, the resultant reproduced sound through the loud speaker 31 will be a true rendition of the original sounds recorded minus such undesirable and extraneous sounds as may have been recorded originally in records 24 and 25.
It will thus be seen that I have provided a dual system of recording and reproducing sound records, utilizing a double unit having independent recording or reproducing devices whereby two sound records may be recorded or reproduced simultaneously or independently and wherein the frequency range of the various sounds to be recorded or reproduced is properly controlled and limited.
Of course changes may be made in details of construction and method of operation without departing from the spirit and scope of my invention. I do not limit myself therefore, to the exact form herein shown and described other than by the appended claim.
I claim:
A sound recording and reproducing apparatus comprising means for supporting a traveling lm, a pair of optical units for recording and reproducing photographic sound records, in operative relation to said lm, said units including tubular members having lenses and slits therein for passing light to spaced points on said lm, and means for adjusting said units with respect to each other and said film, said adjusting means including a slidable common support and separate holders therein for said units, said holders being movable toward and away fromeach other, whereby to predetermine the spacing of said lights on the film.
FREEMAN H. OWENS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US369893A US1950690A (en) | 1929-06-10 | 1929-06-10 | Dual sound recording and reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US369893A US1950690A (en) | 1929-06-10 | 1929-06-10 | Dual sound recording and reproducing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US1950690A true US1950690A (en) | 1934-03-13 |
Family
ID=23457360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US369893A Expired - Lifetime US1950690A (en) | 1929-06-10 | 1929-06-10 | Dual sound recording and reproducing apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US1950690A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2941044A (en) * | 1954-04-23 | 1960-06-14 | Rca Corp | Controlled sound reproduction |
-
1929
- 1929-06-10 US US369893A patent/US1950690A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2941044A (en) * | 1954-04-23 | 1960-06-14 | Rca Corp | Controlled sound reproduction |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1950690A (en) | Dual sound recording and reproducing apparatus | |
US1843972A (en) | Talking motion picture apparatus | |
US1781550A (en) | Method of and apparatus for recording and reproducing sounds | |
US1942066A (en) | Means and method for recording and reproducing photographic sound records | |
US1734675A (en) | Method and apparatus for reproducing sound | |
US1734248A (en) | Photophonographic apparatus and method | |
US1975928A (en) | Method and means for making sound records | |
US1833074A (en) | Sound reproducing apparatus | |
US1769907A (en) | Binaural recording and reproducing sound | |
US2008700A (en) | Reediting of talking films | |
US1801472A (en) | Sound-reproducing system | |
Kellogg | The ABC of photographic sound recording | |
US2384131A (en) | Sound recording and reproducing system | |
US2007370A (en) | Phonodynes, including mechanisms, processes, and manufactures | |
US2323607A (en) | Photographic sound recording | |
US1993929A (en) | Sound recording and reproducing | |
US1698536A (en) | Sound-recording apparatus | |
US1936145A (en) | Sound reproducing system | |
US1854159A (en) | Sound recording | |
US1928953A (en) | Recording and reproducing sound | |
US2252282A (en) | Sound film reproducing system | |
US2265103A (en) | Sound recording | |
US1655811A (en) | Photophonographic apparatus | |
US1929119A (en) | Sound reproducing apparatus | |
US2184816A (en) | Optical apparatus |