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Technology Stocks : Noise Cancellation Technology (NCTI) -- Ignore unavailable to you. Want to Upgrade?

To: Hans Reuchlin who wrote (2338)	9/26/1998 10:46:00 PM
From: Dixie7777	Read Replies (1) \| Respond to of 2775

Not that simple or even close to that inexpensive. The device you so easily define will need a pick-up, microphone. It will need an amplifier with appropriate wattage to generate a amplifiable signal to this nice neat easy to install flat speaker. After all is said and done, I believe that you'll find $100 will not come close to providing all of what you've described. Rich

To: Hans Reuchlin who wrote (2338)	10/15/1998 9:57:00 PM
From: MIKenn	Read Replies (1) \| Respond to of 2775

Here is another challenge to your concept: Active noise cancellation is most successfully applied to low frequencies with long sound waves. They are less volatile (do not bounce around as much) and you have better capability for maintaining a high signal-to-noise ratio (with a high quality microphone, that is). Otherwise, you will only add energy and noise to your environment. Furthermore, with higher frequencies, you would need more computing power and speed in your DSP (digital signal processor) to deal with the increasing complexities of high frequency noise. You also need a powerful amplifier to match to noise source. But the greatest challenge may be the speaker itself! Not having seen the speaker specs. or even a demonstration, I would be surprised it has the low frequency response necessary to cancel noise. It may not have the depth to create low frequency noise!