19. A computer implemented method for identifying significant speech frames within speech signals for facilitating speech recognition, said method comprising: storing instructions and data in a memory; receiving, using a processor, said instructions and data from said memory; storing, a set of computing instructions related to spectral analysis into a first repository, a set of computing instructions related to feature vector extractions into a second repository, a set of computing instructions related to frame weighting and a set of computing instructions related to suitability measure; receiving, by an input module, at least an input speech signal, wherein the speech signal is represented by a plurality of feature vectors; dividing, using a divider of a spectrum analyzer, the input speech signal into a plurality of speech frames and computing at least a spectral magnitude of each of the speech frames; extracting, using an extractor, at least a feature vector from each of the speech frames; receiving at a suitability engine of said computer, the speech frames and the corresponding spectral magnitude of each of speech frames for the purpose of computing a suitability measure for each of the speech frames: computing, by a spectral flatness module of said suitability engine, a spectral flatness measure for each of the speech frames and determining, by said spectral flatness module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the spectral flatness measure computed; computing, by an energy normalized variance module of said suitability engine, an energy normalized variance for each of the speech frame and determining, by said energy normalized variance module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the energy normalized variance computed; computing, by an entropy module of said suitability engine, an entropy for each of the speech frame and determining, by said entropy module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the entropy computed; computing, by a signal-to-noise ratio module of said suitability engine, a signal-to-noise ratio for each of the speech frame and determining, by said signal-to-noise ratio module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the signal-to-noise ratio computed; computing, by a similarity module of said suitability engine, a similarity measure for each of the speech frame and determining, by said similarity module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to similarity measure computed; calculating, by a final suitability measure module of said suitability engine, a final suitability measure by considering the spectral flatness measure, the energy normalized variance, the entropy, the signal-to-noise ratio and the similarity measure along with the corresponding suitability measures computed for each of said speech frames; and computing and assigning, by a frame weight assigner of said computer, at least a weight for each of the speech frames to identify significant speech frames based on the spectral magnitude and the final suitability measure of respective speech frame.
19. A computer implemented method for identifying significant speech frames within speech signals for facilitating speech recognition, said method comprising: storing instructions and data in a memory; receiving, using a processor, said instructions and data from said memory; storing, a set of computing instructions related to spectral analysis into a first repository, a set of computing instructions related to feature vector extractions into a second repository, a set of computing instructions related to frame weighting and a set of computing instructions related to suitability measure; receiving, by an input module, at least an input speech signal, wherein the speech signal is represented by a plurality of feature vectors; dividing, using a divider of a spectrum analyzer, the input speech signal into a plurality of speech frames and computing at least a spectral magnitude of each of the speech frames; extracting, using an extractor, at least a feature vector from each of the speech frames; receiving at a suitability engine of said computer, the speech frames and the corresponding spectral magnitude of each of speech frames for the purpose of computing a suitability measure for each of the speech frames: computing, by a spectral flatness module of said suitability engine, a spectral flatness measure for each of the speech frames and determining, by said spectral flatness module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the spectral flatness measure computed; computing, by an energy normalized variance module of said suitability engine, an energy normalized variance for each of the speech frame and determining, by said energy normalized variance module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the energy normalized variance computed; computing, by an entropy module of said suitability engine, an entropy for each of the speech frame and determining, by said entropy module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the entropy computed; computing, by a signal-to-noise ratio module of said suitability engine, a signal-to-noise ratio for each of the speech frame and determining, by said signal-to-noise ratio module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to the signal-to-noise ratio computed; computing, by a similarity module of said suitability engine, a similarity measure for each of the speech frame and determining, by said similarity module of said suitability engine, a corresponding suitability measure for each of the speech frames corresponding to similarity measure computed; calculating, by a final suitability measure module of said suitability engine, a final suitability measure by considering the spectral flatness measure, the energy normalized variance, the entropy, the signal-to-noise ratio and the similarity measure along with the corresponding suitability measures computed for each of said speech frames; and computing and assigning, by a frame weight assigner of said computer, at least a weight for each of the speech frames to identify significant speech frames based on the spectral magnitude and the final suitability measure of respective speech frame. 22. The method as claimed in claim 19 , wherein the step of computing the energy normalized variance for each of the speech frame further includes a step of accepting a noise estimation of said speech frames to compute a frame level signal-to-noise ratio.