Daniela,
This can be done without special software. An important step when splicing in aspiration noise is to *replace* equivalently long portions of the voiced onset of the /b/ sound. For example, copy the first 30 ms of aspiration from /p/ and paste it at the 30ms mark of the vowel after the /b/ burst. Otherwise, you get the /p/ aspiration and then the complete /b/ voiced onset (the rising F1 transition). If this is what you've been doing, then I'm not sure why it wouldn't sound good.
Another thing- since you are creating sounds from the original voiced utterance, you’ll get a pitch contour that is too low for an aspirated sound. The pitch manipulation function in Praat can solve this issue as well.
Matt
Hello,
I am looking for a good a way to manipulate voice onset time in real speech, for example to create a continuum from "bear" to "pear".
So far, I spliced in aspiration noise between fricative and voice onset using PRAAT, but the result is not really satisfying.
Can anybody give advice?
Thank you very much!
Daniela
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Daniela SAMMLER, Ph.D.
Max Planck Institute for
Human Cognitive and Brain Sciences
Stephanstr. 1a
04103 Leipzig
phone: +49 341 9940 2679
fax: +49 341 9940 2260