Title :
Combined multiresolution (wide-band/narrow-band) spectrogram
Author :
Cheung, Shiufun ; Lim, Jae S.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
fDate :
4/1/1992 12:00:00 AM
Abstract :
Existing speech spectrograms-the wideband spectrogram and the narrowband spectrogram-are either deficient in time or frequency resolution. The authors present a method to combine the two spectrograms by evaluating the geometric mean of the corresponding short-time Fourier transform magnitudes. The combined spectrogram preserves the desirable visual features of the originals
Keywords :
Fourier transforms; speech analysis and processing; combined multiresolution spectrogram; frequency resolution; geometric mean; narrowband spectrogram; short-time Fourier transform magnitudes; speech processing; speech spectrograms; time resolution; visual features; wideband spectrogram; Constraint theory; Energy resolution; Fourier transforms; Frequency; Image restoration; Narrowband; Signal resolution; Spectrogram; Speech analysis; Wideband;
Journal_Title :
Signal Processing, IEEE Transactions on
