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Echofone Technical Info |
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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
Input: 120V 60 Hz
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
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