FilmIndia (1948)

RECORDING SOUND ON WIRE New R. C. A. Wire Recorder Plays for 30 minutes using cartridge which simplifies the handling of the Spools of Wire Carrying Speech or Music. Design of New Instrument Spool and Accurately A RADICALLY designed, lightweight wire recorder, which for the first time completely eliminates the complicated handling of the wire by utilizing a simple "plug-in" cartridge, is now being marketed by RCA. Not only is the instrument finding extensive use in business offices for many purposes, but also it provides the home with ideal, inexpensive means for recording favorite radio programs, family gathering or the sounds of the baby's first words. Housed in a streamlined, black plastic cabinet with disappering carrying handle, the new recorder weighs less than 25 pounds with cartridge and microphone, and is simple enough to be operated by a youngster. Intended for use in offices, schools, studios, broadcast stations, homes, or wherever record of voices or music is desired, the recorder has only three simple controls, and reproduces both speech and music with excellent fidelity. The "plug-in" cartridge, outstanding feature of the instrument, records up to half an hour of speech or music on its more than half a-mile of stainless-steel-covered brass wire, and may be operated to permit immeiiate playback without tedious rewinding. Untouchsi by human hands, the wires wind, unwind, and rewind themselves, permitting the operator to record a 6peech or musical selection of any for Office and Home — Permits Quick Change of Wire Controlled Playbacks with Tone of High Quality length up to 30 minutes, and to return to the exact starting point on the wire for immediate playback. Has Accurate Timing Device Another innovation in a low-cost recorder, is a timing device calibrated in minutes and fractions of minutes which permits the user to determine the exact locations of recordings on the wire Still another advance in the RCA wire recorder is its automatic "erasing" feature. Without requiring a separate operation to "clean" previous material off the wire, the recorder automatically erases previous sounds as a new recording is being made. In quality of sound, the recorder covers the dominant frequency range for music, viz., from 100 to 5000 cycles per second. Offered as "Complete Package'' The new recorder is being offered as a "complete package", with all equipment for both recording and instantaneous playback included. In addition to the plug-in cartridge, the recorder-reproducer unit contains a threewatt high-gain amplifier, a constant-speed motor to drive the wire, a five-inch permanent magnet speaker, and an electro-magnetic unit. The RCA " Aerodynamic Microphone " which comes with the equipment, is complete with seven feet of cable and plug for connection to the input jjck of the record-reproducer. A connection is also provided for external speaker for higher qual reproduction of music or for feedi the output of the amplifier to a lar§ auditorium-type speaker. The ease of operation and hig fidelity features of the recorder ma its usefulness practically unlimited the educational field. Potential u& include teachers of public speaki speech correction, and foreign lan ages. Clergymen and other publ: speakers will find the device ideal rehearsing sermons and speeches; physicians for recording psychia' and other types of interviews, business offices, the unit is ideal recording conferences, especiaB where discussions are of a technkMi nature not easily handled by stenW graphers, and for recording sales talBl which can then be mailed on the easW mailed plug in-cartridge for playbafll in distant branch offices. In addition, a device called an Ujt duction transformer can be readily il> ll stalled to permit the practical rflffi cording of telephone conversations, mm. this way, calls can be recorded in twfa, absence of executives from their officdj-u! Other uses of the recorder inclu recording testimony of witnesses f in court use; as a check on rendition* 1 singers and instrumentalists; in coi mercial recording studios and reporting newspaper on-the-sf interviews for newspapers.