1*b290403dSRicardo GarciaThese wav files show how Sonic performs at increasing speech rates. All sound 2*b290403dSRicardo Garciasampels are in the public domain. 3*b290403dSRicardo Garcia 4*b290403dSRicardo Garciasonic.wav 5*b290403dSRicardo GarciaThis is a sonic 2X sped-up version of a public domain librivox.org recording, from 6*b290403dSRicardo Garciathe audiobook "Princess of Mars". 7*b290403dSRicardo Garcia 8*b290403dSRicardo Garciasoundtouch.wav 9*b290403dSRicardo GarciaThis is the same recording as sonic.wav, but sped up using soundtouch, which 10*b290403dSRicardo Garciauses WSOLA rather than the sonic algorithm. Even at 2X speed up, you should be 11*b290403dSRicardo Garciaable to hear the characteristic WSOLA distortion relative to the sonic version. 12*b290403dSRicardo Garcia 13*b290403dSRicardo Garciatalking.wav 14*b290403dSRicardo GarciaThis is my father talking, using a decent microphone and 44KHz sample rate. 15*b290403dSRicardo Garcia 16*b290403dSRicardo Garciatalking_2x.wav 17*b290403dSRicardo GarciaThis is his voice sped up by 2X using Sonic. 18*b290403dSRicardo Garcia 19*b290403dSRicardo Garciaespeak_s450.wav 20*b290403dSRicardo GarciaSonic also performs well at increasing the speed of synthesized speech. 21*b290403dSRicardo Garciaespeak_s450.wav was generated using 'espeak -s450 -f test1.txt -w 22*b290403dSRicardo Garciaespeak_s450.wav'. This is the highest speed currently supported by espeak, 23*b290403dSRicardo Garciathough Sonic can speed up espeak to much faster rates. 24*b290403dSRicardo Garcia 25*b290403dSRicardo Garciaespeak_sonic.wav 26*b290403dSRicardo GarciaThis was generated with 'espeak -f test1.txt -w out.wav; 27*b290403dSRicardo Garciasonic 2.6 out.wav espeak_sonic.wav'. Sonic sped it up 2.6X, which is about the 28*b290403dSRicardo Garciasame speed as espeak at -s450. I personally feel that the sonic sped up sample 29*b290403dSRicardo Garciasounds better than espeak at -s450. 30*b290403dSRicardo Garcia 31*b290403dSRicardo Garciatwosineperiods.wav 32*b290403dSRicardo GarciaThis is just two sine periods, which is too short to hear. However, it's 33*b290403dSRicardo Garciauseful for making sure the flush function works correctly. A 2-X speedup should 34*b290403dSRicardo Garciaresult in one sine period with no distortion. 35