Epoch Synchronous Overlap Add (ESOLA) by Asoke Kumar Datta

Author:Asoke Kumar Datta
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

St-Ph

Time span (ms)

Correlation values for

WS

SA

PRAAT

CSL

240–560

0.971168

0.974487

0.975192

0.965396

660–810

0.94085

0.910521

0.867612

0.359852

910–1030

0.405241

0.756702

0.791934

0.05897

1130–1840

0.958024

0.445712

0.947273

0.434311

1940–2380

0.825291

0.20005

0.249977

0.33895

3.6 Classification Results

Table 3.8 represents the confusion matrix of classification done using method detailed in Sect. 3.2, of the steady state signals into all the 12 phone classes. These 12 classes consists of 7 vowels, 1 lateral, 2 nasal murmurs and two sibilants. It may be noted that the rows for /a/, /e/ and /i/ includes the classification done through sub-class representation as indicated in Sect. 3.2. For Tables 3.8, 3.9 and 3.10 the number in each cell corresponds to the number of windows. Each steady state contains a large number of windows. These are small and of different length (each equal to a pitch period) for vocalic signal. For sibilant signals the windows are of equal length i.e. of 20 ms. The data within the three boxes indicated by cells with italicised characters in Table 3.8 represent the confusion matrix for the 12-class classification. The boxes therein shows the confusion within the groups namely Group I, II, III defined below.Table 3.8Confusion matrix for 12 phone classes of steady state signals

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