DSP Group: an incredible bargain? Message Board

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Technology Stocks : DSP Group: an incredible bargain?

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To: Tom Caruthers who wrote (937)	10/19/1998 5:22:00 PM
From: Kevin Hay	Read Replies (1) of 1055

thanks Tom. I especially liked this part: =-======-=-=-=-=-= She said her group did a careful statistical analysis of cell phone operations and algorithms and discovered that most could make use of fast Fourier transforms (FFTs) to execute operations more quickly and efficiently than is possible via the traditional approach of implementing finite impulse response (FIR) filters as convolutions in the time domain. ==-=-==-=-=-=-=-=-=-= I've recently got a piece of software that uses FFT. Besides working great, the manual gives a convincing sell on why FFT is better than a filter approach. In summary, FFT samples noise, then recreates the actual audio without the noise. Using filters requires you take out entire frequencies -- not as sexy, and I haven't seen it work as well either. I guess a downside to this is that it'll take some serious processing power to do this in real time. (the software I mentioned often needs to be ran off line) The upside is the increased processing power is on the way.. Waiting with much anticipation for earnings..., -Kevin

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