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Table 2 The hard k -means and fuzzy c -means are implemented for mask estimation

From: Evaluations on underdetermined blind source separation in adverse environments using time-frequency masking

Feature θ(k, l)

k-means

c-means

 

(dB)

(dB)

θ(k,l)= | X 2 ( k , l ) | | X 1 ( k , l ) | , 1 2 π f arg X 2 ( k , l ) X 1 ( k , l ) T

1.8

2.1

θ(k,l)= | X 2 ( k , l ) | | X 1 ( k , l ) | - 1 | X 2 ( k , l ) | | X 1 ( k , l ) | , 1 2 π f arg X 2 ( k , l ) X 1 ( k , l ) T

1.1

1.6

θ(k,l)= | X 2 ( k , l ) | | X 1 ( k , l ) | , 1 2 π f c - 1 d arg X 2 ( k , l ) X 1 ( k , l ) T

7.8

9.2

θ(k,l)= 1 2 π f arg X 2 ( k , l ) X 1 ( k , l )

10.2

8.0

θ(k,l)= 1 2 π f c - 1 d arg X 2 ( k , l ) X 1 ( k , l )

10.1

17.2

θ(k,l)= | X 1 ( k , l ) | A ( k , l ) , | X 2 ( k , l ) | A ( k , l ) , 1 2 π arg X 2 ( k , l ) X 1 ( k , l ) T

4.2

5.4

θ(k,l)= | X 1 ( k , l ) | A ( k , l ) , | X 2 ( k , l ) | A ( k , l ) , 1 2 π f c - 1 d arg X 2 ( k , l ) X 1 ( k , l ) T

10.4

17.4

θ(k,l)= | X 1 ( k , l ) | A ( k , l ) , | X 2 ( k , l ) | A ( k , l ) , 1 α f arg X 2 ( k , l ) X 1 ( k , l ) T

  
 

10.2

17.2

  1. The reverberation was constant at RT60 = 128 ms. The highest achieved ratios are emphasized in italics.