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Group delay processing of radar signals
ICASSP '86. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005A new method of processing the radar signals is presented in this paper. The method is based on the two properties of the magnitude group delay (MGD) function, namely, MGD has high resolution, and it is possible to manipulate different regions of the spectrum independently in the MGD domain.
K. B. Raju, G. R. Reddy, V. V. Rao
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On the design of allpasses with prescribed group delay
International Conference on Acoustics, Speech, and Signal Processing, 2002The design of allpasses with group delays approximating a desired function is discussed. The method is based on a representation of the group delay of an allpass as a Fourier-series expansion and on a calculation of the transfer function of the allpass using a finite number of the corresponding coefficients.
Hans Wilhelm Schüßler, Peter Steffen
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Negative group delay circuit with independently tunable center frequency and group delay
2013 Asia-Pacific Microwave Conference Proceedings (APMC), 2013In this paper, a design of negative group delay circuit (NGDC) with independently tunable center frequency and group delay (GD) is presented. Since the proposed structure consists of a parallel RLC resonance circuit, it is possible to obtain a variable negative GD by using a variable resistor and an adjustment of center frequency of GD is possible due ...
Junhyung Jeong +4 more
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Group delay features for emotion detection
Interspeech 2007, 2007This paper focuses on speech based emotion classification utilizing acoustic data. The most commonly used acoustic features are pitch and energy, along with prosodic information like the rate of speech. We propose the use of a novel feature based on the phase response of an all-pole model of the vocal tract obtained from linear predictive coefficients (
Vidhyasaharan Sethu +2 more
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Optimum design of group delay equalizers
Digital Signal Processing, 2011This paper introduces a novel optimization procedure for the design of group delay equalizers, which is simple to implement, robust and of fast convergence. A pole-zero placement technique is applied to ensure filter stability and direct updating equations.
Mauricio F. Quélhas, Antonio Petraglia
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Group Delay of Acoustic Emissions in the Ear
Journal of Neurophysiology, 2006It is commonly accepted that the cochlea emits sound by a backward traveling wave along the cochlear partition. This belief is mainly based on an observation that the group delay of the otoacoustic emission measured in the ear canal is twice as long as the forward delay.
Tianying, Ren +3 more
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Multistage Decimators with Minimum Group Delay
2010 IEEE International Conference on Communications, 2010In this paper we face the issue of the most effective implementation of multistage decimators in terms of group delay minimization. Here we derive the design criteria to minimize the group delay of multistage decimators and we check their validity comparing the analytical outcomes with the 'experimental' outcomes obtained through the design of a ...
Gianni Pasolini, Raffaele Soloperto
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On two-dimensional group delay equalization
IEEE Transactions on Circuits and Systems for Video Technology, 1991The authors focus on some peculiarities of 2-D group delay equalization by means of cascades of 2*2 sections, a 2-D equalization technique that has lately received considerable attention. It appears that the group delay performance obtained by just one or two 2*2 section equalizers cannot be significantly improved by using equalizers with a greater ...
Guido M. Cortelazzo, Gian Antonio Mian
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Group delay inversion for ocean properties
1995 International Conference on Acoustics, Speech, and Signal Processing, 2002Ocean acoustic tomography has enjoyed success at shorter ranges (
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The delayed impact of group therapists' interventions
Journal of Clinical Psychology, 1977The direct and delayed impact of therapist interventions on 21 clients in three outpatient therapy groups was examined. Sessions one and five of each group were taped with every therapist intervention analyzed according to the Group Therapist Interventions Scale and every client utterance rated on the Experiencing Scale and categorized by the Group ...
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