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07/22/04 8:33 PM

#64651 RE: Tenderloin #64648

I was fascinated by the article, and thank you for it.

Wi-Fi is still an important consideration though.
While the Aura system appears to be good for up to 2 Meters or 6-Feet.
Which might be great for cellphones etc, but I fear not much more.
Most people with multimedia needs, entertainment, information access, need more real world solutions that go beyond the imposed Aura 6 feet rule.

I'm not in agreement with Aura's energy consumption argument ether.

While I'm familiar with Bluetooth as an energy hog, Wi-Fi 802.11 A/B/G, has been comparatively miserly in energy consumption, so the aura statement may not as first glance, taken at face value.
They may approach comparability. To be determined.

Lets compare the Aura Statement against the established medium Wi-Fi.
It might appear at first glance to be only moderately different from other mediums...
Wi-Fi is a radio receiver 2.4GHz/5GHz or other frequency, with a decoder, signal processor and amplifier for audio reproduction into an electro-mechanical transducer (loudspeaker) for audio. Because the communication system and carrier are digital, the received signal does not degrade with distance or signal loss, in a linear way... Either you have signal or you don't. That's the beauty of digital its either on or off.

Aura's system essentially, means transmitting induced changes from one magnetic field into another. Or loosely said an open field transformer. We use transformers every day, but rarely in audio for good reason,
Aura appears to be using an open frame transformer, modulated magnetic coil (Receiver) with a decoder DSP processor and amplifier to bring these admittedly small weak signals up to a level of audibility.
How is this better sounding.
If the Aura signal is digitally encoded & modulated, the only difference between the systems are the TX/RX mechanisms
If the recovered audio, is at the same data rate, the native audio quality will be the same.
So no difference here.

However, If the aura proximity system is not digitally encoded, and performs in the analog domain, then any signal degradation/loss, or fringe area reception, (without digital recovery algorithms), degrades the resultant audio quality to that of a poor AM radio station reception.
Not so for Digital.

I'm interested in the Aura process and need to learn more...

Don't forget that eDigital has technology in the Wireless Wi-Fi area.