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
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.
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.
Output: 9VDC 500MA
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