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QSC is an American manufacturer of audio, video and control products such as amplifiers, loudspeakers, cameras, video endpoints, and digital signal processors including the Q-SYS networked audio, video and control platform. QSC and Q-SYS products are used by audio and video professionals for commercial applications, including corporate, higher ...
The "SoundDock Portable" was released in 2007 [23] and included a battery which provided a running time of 3 to 14 hours, depending on bass and listening volume. [24] [25] Compared to the SoundDock series I, the Portable was had an external 3.5 input and the remote control could change between playlists. [24]
Headphone and earphone jacks on a wide range of equipment. 6.35 mm (1 ⁄ 4 in) plugs are common on home and professional audio equipment, while 3.5 mm plugs are nearly universal for portable audio equipment and headphones. 2.5 mm plugs are not as common, but are used on communication equipment such as cordless phones, mobile phones, and two ...
Patented on March 29, 1988, a cassette tape adapter is a device that allows the use of portable audio players in older cassette decks.Originally designed to connect portable CD players to car stereos that only had cassette players, the cassette tape adapter has become popular with portable media players even on cars that have CD players built in.
Portable radios may have an arrangement for powering from an outlet, conserving the batteries when an outlet is available. Portable "emergency" radios may be solar and/or hand crank powered. [7] Boom box - a portable battery-powered high fidelity stereo sound system in the form of a box with a handle, which became popular during the mid-1970s.
The CX logo, present on LPs and laserdiscs utilizing CX noise reduction. CX is a noise reduction system for recorded analog audio. It was developed by CBS Laboratories (a division of CBS) in the late 1970s as a low-cost competitor to other noise reduction (NR) systems such as dbx disc and High-Com II, and was officially introduced in 1981.
During playback, audio files are read from storage into a RAM based memory buffer, and then streamed through an audio codec to produce decoded PCM audio. Typically audio formats decode at double to more than 20 times real speed on portable electronic processors, [74] requiring that the codec output be stored for a time until the DAC can play it ...
The spread of personal stereo devices contributed to tape cassettes outselling vinyl records for the first time in 1983. The introduction of the personal stereo coincided with the 1980s aerobics vogue, making it very popular to listen to music during workouts. Moreover, the prevalence of portable cassette players correlates with a 30-percent ...