Temporal smoother can be used to smooth acoustic feature vectors along a desired axis. This class is used in voice conversion
to smooth the frequency bins of the vocal tract transformation filter as described in:
Türk, O., Büyük, O., Haznedaroglu, A., and Arslan, L. M., “Application of Voice Conversion for Cross-Language
Rap Singing Transformation”, “Application of voice conversion for crosslanguage rap singing transformation,” in Proc. of the
IEEE ICASSP 2009, Taipei, Taiwan, April 2009.