Combined multi-resolution (wideband/narrowband) spectrogram

1 January 1991

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

p. 457-460 vol.1
https://doi.org/10.1109/icassp.1991.150375

Abstract

The speech spectrogram is a two-dimensional time-frequency display of a one-dimensional signal. The wideband spectrogram and the narrowband spectrogram are deficient either in frequency or in time resolution. The authors present a method for combining the two spectrograms by evaluating the geometric mean of their corresponding pixel values. The combined spectrogram appears to preserve the visual features associated with high resolution in both frequency and time.<>

Keywords

This publication has 3 references indexed in Scilit:

Time-frequency distributions-a review
Proceedings of the IEEE, 1989
Speech spectrograms using the fast Fourier transform
IEEE Spectrum, 1970
The Sound Spectrograph
The Journal of the Acoustical Society of America, 1946