Voice Conversion (En français)

Goal of this subjective test

The goal of this subjective test is to evaluate different methods used for converting a source voice into a target voice. The language of the speech utterances used in this test will be French but you can participate to this test even if you are not a French speaker. The method will transform only the timbre qualities of one voice so that it resembles another one. The prosodic characteristics will not be modified.

In this evaluation we will test the conversion of the voice of a french speaker into the voice of an other speaker with an hispanic accent. 2 test will be made, one about the proximity of the converted voice to the target and one about the quality of the conversion.

It should take you between 5 and 10 minutes to complete the test.

By completing this short questionnaire you are contributing to research on voice conversion, carried out at the Analysis Synthesis team of IRCAM.

Please use HEADPHONES if possible

Thanks in advance !

Pierre

We want to evaluate the conversion from a Voice A to an other Voice B with a hispanic accent.

Here you can find example utterances of two different speakers voices:

  • The source Voice A :
A

  • The target Voice B :
B

Please listen to them in order to get familiar to their different timbre qualities.

Now, for each of the following file, vote whether it is perceived as closer to the Voice A or to the Voice B.

A Perceived as voice A
<- Perceived as closer to voice A
0 Perceived as between voice A and voice B
-> Perceived as closer to voice B
B Perceived as voice B
File A <- 0 -> B

We now ask you to listen to and compare a pair of short utterances and decide which of the two utterances is perceived as more natural by attending to sound quality, i.e., presenting less sound degradation.

1. For each line on the tab, listen carefully to File 1 and File 2. Both sounds will correspond to the same source-target conversion, but processed by using slightly different methods. The differences requires careful listening so please use headphones if you can.

2. Then give a preference score about according to the following grades tab:

Much better +3
Better +2
Slightly better +1
About the same 0
  • to the left if you prefer File 1
  • to the right if you prefer File 2.
File 1 +3 +2 +1 0 +1 +2 +3 File 2

A few more questions :

  • Are you familiar with Speech processing or Voice conversion ? Yes | No
  • Did you use headphones ? Yes | No
  • Your language ? Native french speaker | French speaker | Other

Comments

Please, verify that you gave a preference to all questions, then press this button

All recordings are Ircam's property.

Thanks to Gilles Degottex for the php script.