Demo: Time-Scaling and Pitch-Shifting

Select the name at the top of each box (such as "Female Voice") to hear the original, unprocessed sound. Select one of the time-scaling options (such as "1.2") to hear the sound time-scaled by the selected ratio. Select one of the pitch-shifting options (such as "0.8") to hear the original sound pitch-shifted by the selected ratio. Note that the duration and pitch change independently of each other. The scalings from 0.6 to 1.4 were computed with a time-domain technique and the others with a frequency-domain algorithm.

Female Voice
Time Scaling 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0
Pitch Shifting 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0

Orchestra
Time Scaling 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0
Pitch Shifting 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0

Solo Cello
Time Scaling 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0
Pitch Shifting 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0

Solo Clarinet
Time Scaling 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0
Pitch Shifting 0.33 0.5 0.6 0.8 1.2 1.4 2.0 3.0