scholarly journals Viable scalar spectral tilt and tensor-to-scalar ratio in near-matter bounces

2019 ◽  
Vol 100 (8) ◽  
Author(s):  
Rathul Nath Raveendran ◽  
L. Sriramkumar
Keyword(s):  
Spectral Tilt

Inflation versus Cyclic Predictions for Spectral Tilt

2003 ◽  
Vol 91 (16) ◽  
Author(s):  
Justin Khoury ◽  
Paul J. Steinhardt ◽  
Neil Turok
Keyword(s):  
Spectral Tilt

scholarly journals Red spectral tilt and observable gravity waves in shifted hybrid inflation

2011 ◽  
Vol 84 (10) ◽  
Author(s):  
Matthew Civiletti ◽  
Mansoor Ur Rehman ◽  
Qaisar Shafi ◽  
Joshua R. Wickman
Keyword(s):  
Gravity Waves ◽  
Hybrid Inflation ◽  
Spectral Tilt

scholarly journals The purpose shapes the vocative: Prosodic realisation of Colombian Spanish vocatives

2018 ◽  
Vol 48 (1) ◽  
pp. 33-56
Author(s):  
Clara Huttenlauch ◽  
Ingo Feldhausen ◽  
Bettina Braun
Keyword(s):  
Proper Names ◽  
Colombian Spanish ◽  
Step Down ◽  
One To One ◽  
The Relationship ◽  
Spectral Tilt

The question of whether intonation contours directly signal meaning is an old one. We revisit this question using vocatives in Colombian Spanish (Bogotá). We recorded speakers' productions in three pragmatic conditions – greeting, confirmation-seeking, and reprimand – and compared proper names (vocatives) to situation-specific one-word utterances, such as¡Hola!‘Hello’ (non-vocatives). Intonational analyses showed no direct one-to-one correspondence between the pragmatic conditions and intonation contours: (a) for vocatives, e.g. a rising–falling contour occurred in both greetings and reprimands; and (b) for non-vocatives, e.g. a step-down contour (a.k.a. calling contour) occurred in both greeting and confirmation-seeking conditions. Looking beyond intonation to consider other phonetic variables – spectral tilt, duration, alignment of tonal targets, f0-range, f0-slope – the results showed that the intonation contours that occurred in more than one pragmatic condition differed in phonetic realisation, e.g. rising–falling vocatives showed differences in f0-range of the rise and spectral tilt. However, the corresponding non-vocatives did not show the same differences. Furthermore, vocatives in greeting contexts were realised differently from non-vocatives in greeting contexts. In sum, the pragmatic condition affects the prosodic realisation of (non-)vocatives, but the relationship is complex. The results are discussed in the light of prosodic constructions, leading to the conclusion that the prosodic realisation of vocatives and non-vocatives in Bogotá Colombian Spanish cannot be easily modelled by prosodic constructions.

Acoustic Correlates of Breathy Vocal Quality: Dysphonic Voices and Continuous Speech

1996 ◽  
Vol 39 (2) ◽  
pp. 311-321 ◽  
Author(s):  
James Hillenbrand ◽  
Robert A. Houde
Keyword(s):  
Frequency Domain ◽  
Relative Amplitude ◽  
Harmonic Amplitude ◽  
Continuous Speech ◽  
Connected Speech ◽  
Acoustic Measures ◽  
Acoustic Correlates ◽  
Two Measures ◽  
Vocal Quality ◽  
Spectral Tilt

In an earlier study, we evaluated the effectiveness of several acoustic measures in predicting breathiness ratings for sustained vowels spoken by nonpathological talkers who were asked to produce nonbreathy, moderately breathy, and very breathy phonation (Hillenbrand, Cleveland, & Erickson, 1994). The purpose of the present study was to extend these results to speakers with laryngeal pathologies and to conduct tests using connected speech in addition to sustained vowels. Breathiness ratings were obtained from a sustained vowel and a 12-word sentence spoken by 20 pathological and 5 nonpathological talkers. Acoustic measures were made of (a) signal periodicity, (b) first harmonic amplitude, and (c) spectral tilt. For the sustained vowels, a frequency domain measure of periodicity provided the most accurate predictions of perceived breathiness, accounting for 92% of the variance in breathiness ratings. The relative amplitude of the first harmonic and two measures of spectral tilt correlated moderately with breathiness ratings. For the sentences, both signal periodicity and spectral tilt provided accurate predictions of breathiness ratings, accounting for 70%-85% of the variance.

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