Investigation on optimum parameters for LPC based vocal tract shape estimation

Wankhede, Nilashree S.; Shah, Meet

doi:10.1109/c2spca.2013.6749356

Cited by 8 publications

(10 citation statements)

References 26 publications

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“…Also, it was not difficult to validate the VTS for adults [21] as the estimated shapes can be compared with the shapes obtained based on MRI techniques [18]. Procedure for obtaining VTS for children was slight different and we referred the results obtained by Fitch et al [22].…”

Section: Implementation To Obtain Vts For Childrenmentioning

confidence: 99%

“…The speech sampling rate "Fs", total length of vocal tract "l" and the number of sections "M" in the acoustic tube model are related as given in Equation (1) [19] where c = 350 m/s. LPC analysis corresponding to inverse filter considers certain parameters where "M" denotes prediction order of LPC analysis, "Fs" denotes the sampling frequency used for input speech signal and "l" denotes the average vocal tract length chosen for a speaker from a particular age group [21]. The age groups were decided based on July 2014 | Volume 1 | e690 [19].…”

Section: Modeling Human Vocal Tractmentioning

confidence: 99%

“…The procedure followed towards VTS estimation for children is explained here [21]. Sampled speech from adults as well as children is pre-emphasized before applying a Hamming window of 20 msec.…”

Section: Implementation To Obtain Vts For Childrenmentioning

confidence: 99%

“…The obtained parameters found are vocal tract length, LPC prediction order and sampling frequency of speech signal acquired from children in various age groups [21]. This paper presents an attempt to validate the results presented in [21] for obtaining realistic VTS of children in various age groups who have spoken vowels.…”

Section: Introductionmentioning

confidence: 99%

“…The validation for VTS obtained for adults in our previous work [21] had been done using MRI data provided by Story et al [13]. But for children, such validation cannot be done using direct imaging technique due to nonavailabilty of MRI reference database for articulating children.…”

Section: Introductionmentioning

confidence: 99%

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Validation of Optimum Algorithm Parameters Required to Estimate Vocal Tract Shape for Children Using LPC Analysis

Wankhede¹,

Shah²

2014

OALib

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Severe or profound deafness in hearing impaired children, can curb their ability to speak due to the lack of auditory feedback. There has been a considerable attempt in developing commercial speech training aids for such children which give feedback of acoustic and articulatory parameters. Speech training aids based on visual feedback of vocal tract shape (VTS) are reported to be useful for the improvement in speech production. Since realistic VTS estimation for adult speakers and their validation has already been done successfully, VTS estimation is now necessarily required in case of children too, so that they get trained in speech at an early age. The investigation on vocal tract shape estimation based on LPC analysis of speech by appropriately selecting some of the algorithm parameters such as vocal tract length, LPC order, and speech sampling rate has been done in our previous work. This paper attempts to validate the obtained results for vocal tract shapes corresponding to certain recorded vowels from children belonging to specific age groups. Since MRI images of VTS are unavailable for articulating children, validation of our results is based on the results from researchers who have used other indirect techniques to obtain VTS.

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Section: Implementation To Obtain Vts For Childrenmentioning

confidence: 99%