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ICASSP '83. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
Various authors have pointed out that humans can become quite adept at deriving phonetic transcriptions from speech spectrograms (as good as 90% accuracy at the phoneme level). In this paper, we describe an expert system which attempts to simulate this performance. The speech spectrogram expert (SPEX) is actually a society made up of three experts: a 2-
J. Johannsen +3 more
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Various authors have pointed out that humans can become quite adept at deriving phonetic transcriptions from speech spectrograms (as good as 90% accuracy at the phoneme level). In this paper, we describe an expert system which attempts to simulate this performance. The speech spectrogram expert (SPEX) is actually a society made up of three experts: a 2-
J. Johannsen +3 more
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Spectrograms and generalized spectrograms for classification of random processes
ICASSP '84. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005A maximum likelihood (ML) classifier for discriminating between nonstationary Gaussian time series can be implemented by correlating the data spectrogram with templates that are constructed from ensemble average reference spectrograms. The time window used to synthesize the spectrograms must have a duration that is longer than the decorrelation time of
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2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002
The Gabor expansion based spectrogram (commonly known as the Gabor spectrogram or the time-frequency distribution series) has previously been applied in many areas. In many applications, such as biomedical engineering, radar image processing, and seismology, it has been found to be a good alternative for the STFT-based spectrogram and Wigner-Ville ...
Shie Qian, Yong Rao, Dapang Chen
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The Gabor expansion based spectrogram (commonly known as the Gabor spectrogram or the time-frequency distribution series) has previously been applied in many areas. In many applications, such as biomedical engineering, radar image processing, and seismology, it has been found to be a good alternative for the STFT-based spectrogram and Wigner-Ville ...
Shie Qian, Yong Rao, Dapang Chen
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Experiments on spectrogram reading
ICASSP '79. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005This paper presents the results of several spectrogram reading experiments that were designed to determine the amount of phonetic information that is contained in the speech signal. The task involved identifying the phonetic content of an unknown utterance only from a visual examination of the spectrogram.
Victor W. Zue, Ronald A. Cole
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On Hierarchical Clustering of Spectrogram
2018We propose a new method of applying Generative Theory of Tonal Music directly to a spectrogram of music to produce a time-span segmentation as hierarchical clustering. We first consider a vertically long rectangle in a spectrogram (bin) as a pitch event and a spectrogram as a sequence of bins.
Shun Sawada +2 more
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Transverse Doppler in-vivo spectrograms
European Journal of Ultrasound, 1997Abstract Objective: It is known that a focused ultrasound beam transversely oriented to the direction of flow gives a Doppler spectrum, which despite being centred on zero frequency, has a non-zero bandwidth proportional to the velocity of the insonified flow. This is the main concept of the so-called ‘Transverse Doppler’ theory.
GUIDI, GABRIELE +5 more
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2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2017
In close connection with time-frequency uncertainty relations, spectrograms are known to have some built-in redundancy which constrains the landscape of their surface, thus calling for simplified descriptions based on a reduced number of salient features. This is investigated here in some detail for spectrogram local maxima in the generic case of white
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In close connection with time-frequency uncertainty relations, spectrograms are known to have some built-in redundancy which constrains the landscape of their surface, thus calling for simplified descriptions based on a reduced number of salient features. This is investigated here in some detail for spectrogram local maxima in the generic case of white
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2007
The most widely used methods for time- frequency analysis belong to Cohen’s class of spectrogram estimators. Wigner–Ville distribution (WVD) and multiwindow time -frequency analysis are the most popular techniques. One serious limitation of Wigner distribution is that it produces cross-terms of large magnitudes.
Khalid Mahmood Aamir +3 more
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The most widely used methods for time- frequency analysis belong to Cohen’s class of spectrogram estimators. Wigner–Ville distribution (WVD) and multiwindow time -frequency analysis are the most popular techniques. One serious limitation of Wigner distribution is that it produces cross-terms of large magnitudes.
Khalid Mahmood Aamir +3 more
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Mechanism of the cross-terms in spectrograms
IEEE Transactions on Signal Processing, 1992Using the ambiguity domain interpretation, the authors explore the mechanism of the cross-terms (or interferences) in spectrograms. They emphasize that the spectrogram does, in general, have cross-terms. Depending on the signal structure and the window used, the cross-terms may sometimes be conspicuous, reduced, or completely eliminated. The cross-term
Jechang Jeong, William J. Williams
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Instantaneous bandwidth for signals and spectrogram
International Conference on Acoustics, Speech, and Signal Processing, 2002The concept of instantaneous bandwidth, which is an indication of the frequency spread at a given time, is developed. It is shown that the global bandwidth of a signal can naturally be broken up into an AM and an FM contribution and that the AM contribution comes from averaging the instantaneous bandwidth.
Leon Cohen, Chongmoon Lee
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