Sines+Noise+Transients Noise ModelFigure 10.15 illustrates the nature of the noise modeling used in . The energy in each Bark band11.12 is summed, and this is used as the gain for the noise in that band at that frame time.
10.16 shows the frame gain versus time for a particular Bark band (top) and the piecewise linear envelope made from it (bottom). As illustrated in Figures 10.13 and 10.14, the step size for all of the Bark bands above 5 kHz is approximately 3 ms.
Phase-Continued STFT TSM
Sines+Noise+Transients Time-Frequency Maps