That was then
In 1985, the Studer A820 analog master recorder was designed to
“meet the demands of tomorrow's computer-controlled audio
production facilities.” Multiple on-board microprocessors
controlled all operating subsystems, including capstan drive, spooling
motors and audio parameter settings. Once the dc
capstan motor starts, a closed loop servo system monitored tape tension
and real inertia to provide acceleration and braking.
The A820 incorporated Studer's new generation of phase-compensated
audio electronics, available with transformer or active balanced inputs
and outputs. A dual thumbwheel shuttle/edit control made tape-cut
editing easy. One wheel would winds tape in either direction at
increasing speeds, while the other precisely positioned the tape for
Do you remember?
After eight months, the laboratory tests of digital radio broadcast
systems were winding down at the NASA Lewis Research Center in
Cleveland in November 1994. At the same time, several other unilateral
tests of digital radio systems were being performed.
In Canada, the Eureka 147/DAB system had focused mostly on the
single-frequency networking capability of that system, whereby the same
signal can be transmitted on the same frequency from a number of
transmitters with contiguous coverage zones. This allowed a moving
receiver to continue to listen to a single program by transparently
shifting from one transmitter's zone to another without retuning.
Also, AT&T was testing its in-band/adjacent-channel (IBAC)
system on-air in Princeton, NJ, and intended to test its
in-band/on-channel (IBOC) system that it developed with Amati. The
system used low-level combining so that the on-channel digital signal
was mixed with the analog FM signal at the exciter.
USA Digital Radio's tests of its AM and FM IBOC systems were also
going on at this time. Private bus tours were provided to NAB and NRSC
officials for mobile listening in Cincinnati and Chicago. Videotapes
were presented at the World Media Expo and they represented the first
successful public presentation of mobile IBOC performance.
Sample and Hold
Internet Media Usage on a Steady Rise
Base: Total Population 12+
Source: 2003 Arbitron Inc./Edison Media Research