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The aim of this work is to enable a noise-free time-domain speech signal to be reconstructed from a stream of MFCC vectors and fundamental frequency and voicing estimates, such as may be received in a distributed speech recognition system. To facilitate reconstruction, both a sinusoidal model and a source-filter model of speech are compared by listening(More)
This work proposes a method for predicting the fundamental frequency and voicing of a frame of speech from its mel-frequency cepstral coefficient (MFCC) vector representation. This information is subsequently used to enable a speech signal to be reconstructed solely from a stream of MFCC vectors and has particular application in distributed speech(More)
The paper considers the problem of audiovisual speech recognition in a simultaneous (target/masker) speaker environment. The paper follows a conventional mul-tistream approach and examines the specific problem of estimating reliable time-varying audio and visual stream weights. The task is challenging because, in the two speaker condition, signal-to-noise(More)
This work presents a method of reconstructing a speech signal from a stream of MFCC vectors using a source-filter model of speech production. The MFCC vectors are used to provide an estimate of the vocal tract filter. This is achieved by inverting the MFCC vector back to a smoothed estimate of the magnitude spectrum. The Wiener-Khintchine theorem and linear(More)
In this paper, we propose and study how to provide multipath cross-layer service discovery (MCSD) for mobile ad hoc networks (MANETs). Cross-layer service discovery integrates service discovery into route discovery by taking advantage of network-layer topology information and routing message exchange. Multipath service discovery differs from multipath(More)
IP Multimedia Subsystem (IMS) and Web services (WS) are service-oriented architectures developed separately for service delivery in the next generation telecommunications, and IT-centric computing environment, respectively. In order to harness services in both of these platforms and to facilitate combining and blending of services, we propose an integrated(More)
This paper presents a robust speech recognition technique called audiovisual speech fragment decoding (AV-SFD), in which the visual signal is exploited both as a cue for source separation and as a carrier of phonetic information. The model builds on the existing audio-only SFD technique which, based on the auditory scene analysis account of perceptual(More)
The paper proposes a technique for reconstructing an acoustic speech signal solely from a stream of Mel-frequency cepstral coefficients (MFCCs). Previous speech reconstruction methods have required an additional pitch element, but this work proposes two maximum a posteriori (MAP) methods for predicting pitch from the MFCC vectors themselves. The first(More)
AIM OF THE STUDY The present study examined the antifibrosis effects of DBTG (total glucosides of Danggui-Buxue-Tang) on bleomycin-induced pulmonary injury and fibrosis in rats. MATERIALS AND METHODS Animals were randomly divided into six groups: (1) saline control group; (2) Bleomycin group in which rats were endotracheally instillated with bleomycin(More)