This study aims to explore the influence of vowels and sound intensity on formant, so as to provide reference for the selection of sound samples and vocal methods in acoustic detection. Thirty-eight healthy subjects, 19 male and 19 female, aged 19-24 years old were recruited. The formants of different vowels（/a/, //, /i/ and /u/） and different sound intensities（lowest sound, comfort sound, highest true sound and highest falsetto sound） were analyzed, and pairings were compared between groups with significant differences. ①The vowels /a/ and // in the first formant were larger than /i/ and /u/, and /i/ was the largest in the second formant. The minimum value of the first formant is the lowest sound of /i/ and the maximum is the highest sound of /a/. ②In the first formant, the chest sound area increases with the increase of sound intensity, while the second formant enters the highest falsetto and decreases significantly. Different vowels and sound intensity have different distribution of formant, that is, vowel and sound intensity have different degree of influence on formant. According to the extreme value of the first formant, the maximum normal range is determined initially, which is helpful to improve the acoustic detection.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.13201/j.issn.2096-7993.2024.12.011 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The efficiency of biofeedback electric stimulation therapy combined with low-intensity pulsed ultrasound in treating erectile dysfunction: a clinical study.
Rev Int Androl
December 2024
Department of Urology and Pelvic Surgery and Andrology, West China School of Public Health and West China Fourth Hospital, Sichuan University, 610000 Chengdu, Sichuan, China.
Background: Erectile dysfunction (ED) is a prevalent condition that significantly impacts the quality of life of both patients and their partners. Current therapeutic approaches often struggle to address the diverse needs of all patients. In addition, the efficacy of low-intensity pulsed ultrasound (LIPUS) in improving ED symptoms has been insufficiently investigated.
View Article and Find Full Text PDFSustainable reduction in sound levels on intensive care units through noise management - an implementation study.
BMC Health Serv Res
January 2025
Center of Implementing Nursing Care Innovations Freiburg, Nursing Direction, Medical Center - University of Freiburg, Freiburg, Germany.
Background: The noise levels in intensive care units usually exceed the recommended limits in (inter)national recommendations. Such noise levels can affect both the recovery of intensive care patients and the performance of staff. The aim of this study was to reduce ward-based noise levels in three intensive care units (anesthesiological, neurological, and neonatological).
View Article and Find Full Text PDFRevolutionizing drug delivery: low-intensity pulsed ultrasound (LIPUS)-driven deep penetration into hypoxic tumor microenvironments of cholangiocarcinoma.
Theranostics
January 2025
College of Pharmacy, Seoul National University, Seoul 08826, South Korea.
Hypoxia is a major obstacle in the treatment of solid tumors because it causes immune escape and therapeutic resistance. Drug penetration into the hypoxic regions of tumor microenvironment (TME) is extremely limited. This study proposes using the unidirectional fluid flow property of low-intensity pulsed ultrasound (LIPUS) to overcome drug penetration limitations in the TME.
View Article and Find Full Text PDFN1 facilitation at short Inter-Stimulus-Interval (ISI) occurs under 400 ms and is dependent on ISI from previous sounds: Evidence using an unpredictable auditory stimulation sequence.
Int J Psychophysiol
December 2024
Clinical Neurophysiology Research Laboratory, Western Psychiatric Hospital, Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
The N1 auditory evoked potential amplitude depends heavily on the inter-stimulus interval (ISI). Typically, shorter ISIs result in reduced N1 amplitudes, suggesting a decreased neural response with high stimulus presentation rates. However, an exception known as N1 facilitation occurs with very brief ISIs (∼150-500 ms), where the N1 amplitude increases.
View Article and Find Full Text PDFA sound approach for ova denudation.
F S Sci
December 2024
The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, 10021, USA. Electronic address:
Article Synopsis
- Developed a non-contact method using acousto-hydrodynamic tweezers (AHT) for denuding cumulus-oocyte complexes (COCs), showing higher efficiency compared to traditional manual methods.
- Tested on mice, the method demonstrated no damage to oocytes and reduced denudation time by 46% while maintaining embryo development rates.
- Findings suggest that using acoustic waves can significantly improve the denudation process for intracytoplasmic sperm injection (ICSI), potentially enhancing fertility treatment procedures.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!