Assessment on impact of various types of dysarthria on acoustic parameters of speech

Giri, Mahesh P.; Rayavarapu, Neela

doi:10.1007/s10772-018-9539-0

Cited by 3 publications

(4 citation statements)

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“…Therefore, in this study, the speech intensity is adjusted after scaling the fundamental frequency and speech rate, and an FFT and IFFT-based technique is employed for this purpose [11]. Due to speech intensity scaling, the louder speakers are expected to speak with a softened voice, so their capacity to speak for a long time will rise.…”

Section: Methodology For Modification Of Speech Intensitymentioning

confidence: 99%

“…Furthermore, for children, it is higher for girls than for boys [7], [10]. However, the fundamental frequency of many dysarthric speakers is observed to be outside the normal range [11]. Additionally, in several cases, the intensity level of speech of dysarthric speakers was found to be higher than that of an unimpaired speaker [9], [12].…”

Section: Introductionmentioning

confidence: 95%

“…In this study, the above-said parameters are evaluated for the database of ten dysarthric speakers. Six dysarthric speaker's speech samples from a total of 10 speakers have been collected from the Ali Yavar Jung National Institute for The Hearing Handicapped (AYJNIHH), Mumbai, India, and the All India Institute of Physical Medicine and Rehabilitation (AIIPMR), Mumbai, India [11]. The dysarthric speech samples of the remaining four speakers have been collected from the database developed by the University of Illinois, Chicago [23].…”

Section: Selection Of Parametersmentioning

confidence: 99%

“…A software tool, 'Audio recorder editor', was used to record dysarthric speech samples. Throughout the recording sessions, the audio recorder editor was configured with a mono channel, 16 KHz sampling rate, and 16-bit resolution [11]. The above parameters that need to be modified are analyzed for impaired and unimpaired speech.…”

Section: Selection Of Parametersmentioning

confidence: 99%

See 3 more Smart Citations

Improving the intelligibility of dysarthric speech using a time domain pitch synchronous-based approach

Giri

Rayavarapu

2023

IJECE

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Dysarthria is a motor speech impairment that reduces the intelligibility of speech. Observations indicate that for different types of dysarthria, the fundamental frequency, intensity, and speech rate of speech are distinct from those of unimpaired speakers. Therefore, the proposed enhancement technique modifies these parameters so that they fall in the range for unimpaired speakers. The fundamental frequency and speech rate of dysarthric speech are modified using the time domain pitch synchronous overlap and add (TD-PSOLA) algorithm. Then its intensity is modified using the fast Fourier transform (FFT) and inverse fast Fourier transform (IFFT)-based approach. This technique is applied to impaired speech samples of ten dysarthric speakers. After enhancement, the intelligibility of impaired and enhanced dysarthric speech is evaluated. The change in the intelligibility of impaired and enhanced dysarthric speech is evaluated using the rating scale and word count methods. The improvement in intelligibility is significant for speakers whose original intelligibility was poor. In contrast, the improvement in intelligibility was minimal for speakers whose intelligibility was already high. According to the rating scale method, for diverse speakers, the change in intelligibility ranges from 9% to 53%. Whereas, according to the word count method, this change in intelligibility ranges from 0% to 53%.

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Section: Methodology For Modification Of Speech Intensitymentioning

confidence: 99%