1.Discard frozen frames once their magnitude has decayed sufficiently (e.g., -60 dB)
¥For a 1 second decay time and 2048 sample hop size at 44.1 kHz, we would need to update the magnitudes and phases of 22 frozen frames at each hop
¥This could still be burdensome for long decaytimes
2.Consolidate groups of frames having similar phase increments