Understanding Parkinson's Disease -- Symptoms. Parkinson's disease is a movement disorder that progresses slowly. Some people will first notice a sense of weakness, difficulty walking, and stiff muscles. Others may notice a tremor of the head or hands.
Company Overview. FFT PRODUCTION SYSTEMS INC is in the Engineering Services industry in Auburn Hills, MI. This company currently has approximately 1 to 5 employees and annual sales of Under $500,000. Company Details
Ryan's answer sums it up. I will however expand a bit. The FFT is a fast implementation of the DFT. When we apply a naive DFT to a signal of length [math]N[/math] we need to multiply an [math]N\times N[/math] matrix by a [math]N \times 1[/math] vector, which requires roughyly [math]O(N^2)[/math] operations.