Minor Sounds of Major Importance
نویسنده
چکیده
Prosody plays a big role in the human speech and is used for expressing emotions and attitudes in addition to the lexical words. This study looks at the possibility to use prosody in expressing attitudes with backchannels, such as /oh/, /m/, /uhu/ etc. In the study, two monosyllabic backchannels, /a/ and /m/, were chosen, created synthetically and manipulated systematically with regards to the prosodic properties pitch, peak position, and duration. Each stimulus was put in a context, and the task was for the participants to choose among five answer alternatives a suitable interpretation of the backchannel. The results show that the meaning of a backchannel mainly changes with the peak position property, but interaction effects of the combination with pitch and duration could also be seen. Some stimuli have received fairly unambiguous results, which is an indication that they sound natural and are easy to interpret. This is a positive result for the continuous research of usage of backchannels in spoken dialogue systems.
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