![]() ![]() Mid-to-high frequency noise was added to the samples. RFF values of the comfortable voice samples were synthetically lowered, and RFF values of the maximum vocal effort samples were synthetically raised. Will Styer also has a great praat manual which includes a section on source-filter vowel resynthesis (7.15) which allows you to manipulate formant frequencies and bandwidths of existing tokens. Stimuli were created using recordings of speakers producing /ifi/ with a comfortable voice and with maximum vocal effort. It seems the toolkit you use has this functionality as Change formants. USC Speech and Vocal Tract Morphology MRI Database. By using naturalistic recordings and modifying the formant values, you can retain all the cues listeners attend to but which you may not think to include or manipulate. You may find modifying existing recordings more reliable than synthesizing tokens from scratch. When installed, you can call various new functions from a button within Praat. If the bandwidth cue is missing, lowering F2 may improve perception by providing an additional cue, so this may explain why lowering the F2 values worked for you. Vocal Toolkit plugin is a plugin for Praat. Make vocal harmonies by adding sounds where the pitch has been altered by. Many studies have found that in the long run, ‘similar’ phones cause the most trouble for L2 learners. According to Speech Learning Model (Flege, 1987, 1992, 1995 Bohn &Flege, 1992), L2 phones can be classified into three categories, ‘new’, ‘similar’, and ‘identical’. Inaccurate formant bandwidths may lead to perceptual differences even if the formant positions are correct since listeners may rely on it as an acoustic cue to rounding. Make Voice Onset Time (VOT) / F0 continuum. This paper examines Spanish vowel perception by Korean learners. You are creating rounded vowels, and formant bandwidths are correlated with the degree of lip rounding (see Stevens 2000 p 292). Here, we investigated whether vocal phrases consisting of discrete pitches (song-like) or gliding pitches (speech-like) are remembered better, conducting three studies implementing auditory same. I'm not familiar with this toolkit, but given your description my suggestion would be to check formant bandwidths. Recently, a paper was published about how to measure DSI through Praat Maryn, Morsomme and De Bodt, 2017. ![]()
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