Thank you for your time ! Please read carefully the following information, even though you are used to doing such tests !

This listening test aims at evaluating the variations of the fundamental frequency (F0) (i.e. pitch, voice height) in singing voice synthesis.
We do not want to assess the overall quality of the synthesis or the used techniques for processing the waveforms.
However, the sounds below may contain artefacts which are not related to the F0 (e.g. unatural timbre, distortions, time irregularities).
Thus, please try to ignore these artefacts and focus on the F0 variations.

For each pair of recordings below (each line) select one button depending on your preference about the naturalness of the two sounds.

• If the left recording is much better than the right one, select the most left button (+3)
• If the left recording is better than the right one, select the second button (+2)
• If the left recording is slightly better than the right one, select the third button (+1)
• If you do not hear any difference or you have no preference, select the middle button (0)

Recommendations

• If there is any technical problem (e.g. sound not playing) with one sound, select Prob.
• If you perceive a difference of loudness such as you can't properly evaluate a pair of sounds, select also Prob.
• Do the test in a quiet place.
• Use absolutely headphones or earphones.
• Verify that the sound level is loud enough to hear the sound details properly.
• Please, take the time to listen !
• No need to try to find a repetition or order among the sounds. There is none. Their order is randomized.
• There is no "correct" answer. It is only about your subjective preference.

The sounds used in this test are under Copyright © 2015 Ircam, Institut de recherche et coordination acoustique/musique.