Review Article

Single Channel Speech Enhancement Techniques in Spectral Domain

Table 1

Instantaneous shape parameter functions 𝑅 𝜇 𝑘 (n) and 𝑅 𝜈 𝑘 (n).

SNR range [dB] 𝑅 𝜇 𝑘 ( 𝑛 ) = 𝐹 [ ğ‘Ž 0 𝑃 𝑘 ( 𝑛 ) + 𝑏 0 ] 𝑅 𝜈 𝑘 ( 𝑛 ) = 𝐹 [ 𝑐 0 𝑃 𝑘 ( 𝑛 ) + 𝑑 0 ]
ğ‘Ž 0 𝑏 0 𝑐 0 𝑑 0

𝑃 𝑘 ( 𝑛 ) ≤ 2 0 −0.0873.500.060−1.04
2 0 < 𝑃 𝑘 ( 𝑛 ) ≤ 3 3 0.0450.840.060−1.04
3 3 < 𝑃 𝑘 ( 𝑛 ) ≤ 4 9 −0.0794.90−0.0352.11
4 9 < 𝑃 𝑘 ( 𝑛 ) ≤ 6 5 −0.0111.600.039−1.56
6 5 < 𝑃 𝑘 ( 𝑛 ) −0.0745.6001.00