Biomedical Engineering Reference
In-Depth Information
Figure 8-9.
tV Ears Digital System. Image courtesy
of tV Ears.
will vary the bass and treble frequency
regions reaching the listener's ears. The
TV Ears 5.0 digital systems are quite simi-
lar to the analog version with the excep-
tion that these are used with televisions
that have digital audio out ports.
channel (WIR TX925 SoundPlus) and
four-channel (WIR TX900 SoundPlus)
turnkey systems, which can be used as
portable units or permanently installed.
Williams Sound has three types of receiv-
ers (not sold with a dedicated transmit-
ter) that can be used in home applications
and taken to public venues: the Sound-
Plus headphones (WIR RX15-2; see Fig-
ure 8-2), the WIR RX22-4N 4-channel
receiver (see Figure 8-3), and the Sound-
Plus stethoset-style earphones (WIR
RX18; Figure 8-10). The two-channel
receivers will operate on 2.3 or 2.8 MHz
Williams Sound
Williams Sound sells IR transmitters (and
emitters) and receivers as separate units,
allowing consumers to “mix and match”
to achieve the best system for their par-
ticular application. Also available are two-
