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Table 4 Suppression performance achieved by NMF and the proposed method for varying SNRs. For this experiment, ego-noise by movements of Sequence III is used. Parameters used for proposed methods are given in the last rows. For all SNRs, dictionaries of size K=30, KS=20 are used

From: Motor data-regularized nonnegative matrix factorization for ego-noise suppression

SNR

SDR [dB]

SAR [dB]

PESQ

Parameters

(PESQ)

NMF

Proposed

NMF

Proposed

NMF

Proposed

 

− 10 dB

− 2.34 (± 0.75)

− 2.34 (± 0.75)

3.46 (± 0.09)

3.46 (± 0.09)

1.07 (± 0.00)

1.07 (± 0.00)

λT=0, λE=0

(1.05)

      

ε=5·10−3

− 5 dB

3.7 (± 0.29)

3.91 (± 0.17)

6.00 (± 0.05)

6.14 (± 0.1)

1.11 (± 0.05)

1.13 (± 0.01)

λT=0.9, λE=0.9

(1.05)

      

ε=5·10−3

− 2 dB

5.53 (± 0.02)

5.81 (± 0.02)

7.46 (± 0.04)

8.06 (± 0.03)

1.2 (± 0.01)

1.25 (± 0.01)

λT=0.6, λE=2.5

(1.06)

      

ε=5·10−3

− 1 dB

5.88 (± 0.03)

6.40 (± 0.02)

7.88 (± 0.04)

8.65 (± 0.05)

1.25 (± 0.01)

1.3 (± 0.01)

λT=0.3, λE=4.4

(1.06)

      

ε=5·10−3

0 dB

6.08 (± 0.02)

6.97 (± 0.04)

8.14 (± 0.03)

9.26 (± 0.09)

1.26 (± 0.01)

1.32 (± 0.01)

λT=0.4, λE=6.9

(1.07)

      

ε=5·10−3

1 dB

6.34 (± 0.03)

7.46 (±0.01)

8.48 (± 0.03)

9.78 (± 0.03)

1.29 (± 0.04)

1.38 (± 0.02)

λT=0.5, λE=8.0

(1.08)

      

ε=5·10−3

2 dB

6.55 (± 0.05)

7.98 (± 0.01)

8.76 (± 0.04)

10.38 (± 0.04)

1.31 (± 0.03)

1.39 (± 0.01)

λT=0.5, λE=12.5

(1.09)

      

ε=5·10−3

5 dB

6.99 (±0.06)

9.10 (± 0.02)

9.38 (± 0.05)

11.59 (± 0.05)

1.35 (± 0.01)

1.41 (± 0.01)

λT=0.5, λE=22.5

(1.12)

      

ε=5·10−3

10 dB

7.73 (± 0.1)

10.5 (± 0.05)

9.95 (± 0.04)

13.2 (± 0.06)

1.42 (± 0.0)

1.51 (± 0.02)

λT=0.4, λE=29.5

(1.23)

      

ε=5·10−3