Title :
Combined multi-resolution (wideband/narrowband) spectrogram
Author :
Cheung, Shiufun ; Lim, Jae S.
Author_Institution :
MIT, Cambridge, MA, USA
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 :
acoustic variables measurement; frequency-domain analysis; speech analysis and processing; time-domain analysis; combined wideband/narrowband spectrogram; corresponding pixel values; geometric mean; high resolution; speech spectrogram; two-dimensional time-frequency display; Auditory displays; Equations; Filters; Frequency measurement; Humans; Narrowband; Spectrogram; Speech analysis; Time frequency analysis; Wideband;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150375
