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The bottom of this cartridge acted as the top for the sound cartridge below it which was basically identical to an 8-track. The only difference was the recording was the same 2-track format as mono NAB carts at the same 3-3/4 IPS speed (9.5 cm/s) as an 8-track with the program material on one track and the subsonic picture-change automation ...
A typical high-performance CD-4 system would include a turntable with a CD-4 compatible phono cartridge, a CD-4 demodulator, a four-channel amplifier (or receiver), and four identical full-range loudspeakers. [5] CD-4 encoded records were also compatible with conventional two-channel stereo playback systems. In stereo mode all four channels of ...
A health economic study found that passing an e-cigarette minimum legal sale age law in the United States increased teenage prenatal smoking by 0.6 percentage points and had no effect on birth outcomes. [111] Nevertheless, additional research needs to be done on the health effects of electronic cigarette use during pregnancy. [112]
Fidelipac was originally a 1 ⁄ 4-inch-wide (6.4 mm) analog recording tape, two-track format. One of the tracks was used for monaural program audio, and the other being used for a cue track to control the player, where either a primary cue tone was recorded to automatically stop the cart, a secondary tone was recorded to automatically re-cue the cart to the beginning of the cart's program ...