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| The inner ear plays a significant
role in our being. It translates vibrations picked up by the skin, as well as
the joints and muscles into cortical charge. This cortical charge builds, organizes
and nourishes temporal-spatial organization for other senses and provides the
background beat for learning. The purpose of the Echofone is to enhance the way
we hear, to improve learning abilities, communication, and emotional behavior.
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| Originally designed
by AquaThought Labs as a research tool, the Echofone provides accurate perception
of frequencies which are ordinarily well above your hearing range. Incoming high-frequency
sound is converted to ultrasound and transmitted to transducers, which contact
your skin. The ultrasound travels though your skin to the inner ear, where it
is perceived as high frequency audible sound. With the Echofone you can generate
sensation of sound wthout any mechanical stimulation of the eardrum.
By allowing you to perceive spatial information embedded within high frequencies,
music and sounds gain dimension. Much information about the position of sounds
in the recording environment is encoded in the overtones. These overtones can
often be above your normal hearing range, however with the Echofone you are able
to perceive them. This perceptual expansion adds a sense of depth to many recordings.
For example, with the Echofone you can close your eyes and actually sense where
the instruments are located in a recorded orchestration.
The Echofone
enhances the high-frequencies in audio from a variety of sources. CD's or DVD's
mastered entirely in the digital domain will provide exceptional results.
Trode Output - 400 Hz to 100,000+ Hz frequency response
- 3 watts output/channel, typical
- Bridge-tied load (BTL) output configuration
- Trode signal is 30 volts peak-to-peak when the volume is set at 60% or higher
Note: The output impedance of the Echofone trode amplifier
varies with frequency, the trode impedance also varies with frequency. With Echofone
trodes, the important spec is sound pressure level, and Echofone trode amplifiers
are designed to maximize that. 
AC Adapter Output: 9VDC 500MA Phones Output
32 ohms impedance 10 Hz to 20,000 Hz frequency response, -3dB 70+ dB signal/noise
200 mW output (rms) into 8 ohms, 0.1% THD 85 mW output (rms) into 32 ohms,
0.1% THD SECURE
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