Abstract
In the previous paper, we proposed an effective spectrum analysis method for transcription, in which adaptive technique was used. Step size parameter of this method is within the range of 0<μ<1/4L (L: number of weight). But, step size parameter is a convergence factor which determine adaptation rate. If large number of weight is necessary, it limits the adaptation rate. In this reason, we proposed Adaptive DFT by LMS algorithm. By the proposed method, the range of μ is 0<μ<1/4. Simulation and experimental results are illustrated.
