Time Stretching
Time stretching is doing scaling only on the time axis, leaving frequencies the same. When a < 1 (the most common case), it's narrowing on the time axis, reducing the area.
STFT, Gabor:
WDF:
Read more about this topic: Motions In The Time-frequency Distribution
Famous quotes containing the words time and/or stretching:
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—Henry David Thoreau (1817–1862)