- by Medikoe Wellness Expert
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- Apr 09 2018
How to Make a Good Impression When Saying Hello
When people you meet for the first time say hello, do they strike you as friendly or hostile? The linguistic and social judgments we make when hearing speech are based on intonation. Just as we have a mental image of what an apple looks like -- round, green or red, with a stem, etc. -- we form mental representations of others' personalities according to the acoustic qualities of their voices. For the first time ever, researchers have managed to visually model these mental representations and compare those of different individuals.
To do this, they developed a computer program for voice manipulation called CLEESE. This software can take the recording of a single word and randomly generate thousands of other variant pronunciations that are all realistic but each unique in their melody -- sort of like putting makeup on the original recording. Then, by analyzing participants' responses when hearing these different pronunciations, the researchers were able to experimentally determine what intonation makes a hello seem sincere. To sound determined, a French speaker must pronounce bonjour (French for "hello") with a descending pitch, putting emphasis on the second syllable. On the other hand, to inspire trust, the pitch must rise quickly at the end of the word. Using this software, the team is thus able to visualize the "code" people use to judge others by their voices, and has shown that the same code applies no matter the sex of the listener or the speaker.
This method of investigation could be used to answer many other questions in the field of language perception. For example, how do these findings play out at sentence level? And do mental representations vary with the language being spoken? It may also serve to understand how emotions are represented by autistic individuals. To help others answer these questions, the research team has made CLEESE freely available here . The team members themselves have already found a clinical application for the program: to study how words are interpreted by survivors of a stroke, an event which can alter how they perceive vocal intonation. Whether for the purposes of medical monitoring or diagnosis, the researchers would like to use their method to detect anomalies in language perception and possibly make it a tool for patient rehabilitation.
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