Human speech consists of concomitant temporal modulations in amplitude and frequency that are crucial for speech perception. In this study, amplitude modulation (AM) detection thresholds were measured for 550 and 5000 Hz carriers with and without concurrent frequency modulation (FM), at AM rates crucial for speech perception. Results indicate that adding 40 Hz FM interferes with AM detection, more so for 5000 Hz carrier and for frequency deviations exceeding the critical bandwidth of the carrier frequency. These findings suggest that future cochlear implant processors, encoding speech fine-structures may consider limiting the FM to narrow bandwidth and to low frequencies.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1121/1.4962374 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
On the Feasibility of Detecting Faults and Irregularities in On-Load Tap Changers (OLTCs) by Vibroacoustic Signal Analysis.
Sensors (Basel)
December 2024
Hydro Québec's Research Institute, Varennes, QC J3X 1S1, Canada.
Unlike traditional tap changers, which require transformers to be de-energized before making changes, On-Load Tap Changers (OLTCs) can adjust taps while the transformer is in service, ensuring continuous power supply during voltage regulation. OLTCs enhance grid reliability and support load balancing, reducing strain on the network and optimizing power quality. Their importance has grown as the demand for stable voltage and the integration of renewables has increased, making them vital for modern and resilient power systems.
View Article and Find Full Text PDFCharacteristic Analysis and Error Compensation Method of Space Vector Pulse Width Modulation-Based Driver for Permanent Magnet Synchronous Motors.
Sensors (Basel)
December 2024
School of Physics and Information Engineering, Fuzhou University, Fuzhou 350108, China.
Permanent magnet synchronous motors (PMSMs) are widely used in a variety of fields such as aviation, aerospace, marine, and industry due to their high angular position accuracy, energy conversion efficiency, and fast response. However, driving errors caused by the non-ideal characteristics of the driver negatively affect motor control accuracy. Compensating for the errors arising from the non-ideal characteristics of the driver demonstrates substantial practical value in enhancing control accuracy, improving dynamic performance, minimizing vibration and noise, optimizing energy efficiency, and bolstering system robustness.
View Article and Find Full Text PDFImpact of the Abdominal Drawing-In Maneuver on Spinal Extensor Muscle Activity: A Randomized Controlled Double-Blind Trial Involving Individuals with Non-Specific Low Back Pain.
Int J Environ Res Public Health
December 2024
Gulhane Faculty of Physical Therapy and Rehabilitation, University of Health Sciences, 06010 Ankara, Turkey.
Non-specific low back pain (NSLBP) is a common musculoskeletal issue that can limit function and reduce the patient's quality of life. Enhancing spinal stabilizer muscle activity through targeted exercises may help improve spinal alignment and alleviate NSLBP symptoms. This study aimed to investigate whether incorporating the abdominal drawing-in maneuver (ADIM) into selected low back exercises influences the electromyographic (EMG) activity of key spinal extensor muscles.
View Article and Find Full Text PDFEmotional Evaluations from Partners and Opponents Differentially Influence the Perception of Ambiguous Faces.
Behav Sci (Basel)
December 2024
Research Center of Brain and Cognitive Neuroscience, Liaoning Normal University, Dalian 116029, China.
The influence of contextual valence and interpersonal distance on facial expression perception remains unclear despite their significant role in shaping social perceptions. In this event-related potential (ERP) study, we investigated the temporal dynamics underlying the processing of surprised faces across different interpersonal distances (partner, opponent, or stranger) and contextual valence (positive, neutral, or negative) contexts. Thirty-five participants rated the valence of surprised faces.
View Article and Find Full Text PDFPredictive Modeling of Heart Rate from Respiratory Signals at Rest in Young Healthy Humans.
Entropy (Basel)
December 2024
Human Psychobiology Laboratory, Experimental Psychology Department, University of Seville, 41018 Seville, Spain.
Biological signals such as respiration (RSP) and heart rate (HR) are oscillatory and physiologically coupled, maintaining homeostasis through regulatory mechanisms. This report models the dynamic relationship between RSP and HR in 45 healthy volunteers at rest. Cross-correlation between RSP and HR was computed, along with regression analysis to predict HR from RSP and its first-order time derivative in continuous signals.
View Article and Find Full Text PDFWant 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!