Heart-Sound Processing by Average and Variance Calculation - Physiologic Basic and Clinical Implications

1984 ◽  
Vol BME-31 (9) ◽  
pp. 591-596 ◽  
Author(s):  
Rafael Beyar ◽  
Shlomo Levkovitz ◽  
Shimon Braun ◽  
Yoram Palti
Keyword(s):  
Heart Sound ◽  
Clinical Implications ◽  
Sound Processing ◽  
Variance Calculation

scholarly journals Performance Evaluation of Heart Sound Cancellation in FPGA Hardware Implementation for Electronic Stethoscope

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Chun-Tang Chao ◽  
Nopadon Maneetien ◽  
Chi-Jo Wang ◽  
Juing-Shian Chiou
Keyword(s):  
Heart Sound ◽  
Sound Processing ◽  
Electronic Stethoscope ◽  
Gate Arrays ◽  
Implementation Evaluation ◽  
Breath Sounds ◽  
Field Programmable ◽  
Programmable Gate Arrays ◽  
Hardware Circuit ◽  
Sound Cancellation

This paper presents the design and evaluation of the hardware circuit for electronic stethoscopes with heart sound cancellation capabilities using field programmable gate arrays (FPGAs). The adaptive line enhancer (ALE) was adopted as the filtering methodology to reduce heart sound attributes from the breath sounds obtained via the electronic stethoscope pickup. FPGAs were utilized to implement the ALE functions in hardware to achieve near real-time breath sound processing. We believe that such an implementation is unprecedented and crucial toward a truly useful, standalone medical device in outpatient clinic settings. The implementation evaluation with one Altera cyclone II–EP2C70F89 shows that the proposed ALE used 45% resources of the chip. Experiments with the proposed prototype were made using DE2-70 emulation board with recorded body signals obtained from online medical archives. Clear suppressions were observed in our experiments from both the frequency domain and time domain perspectives.

Heart Sound Monitor for Biomedical Instrumentation

2013 ◽  
Vol 303-306 ◽  
pp. 650-653
Author(s):  
Sirimonpak Sutdipong ◽  
Khanchai Tunlasakun
Keyword(s):  
Fourier Transforms ◽  
Heart Sound ◽  
Digital Signal ◽  
Electrical Signal ◽  
Sound Card ◽  
Sound Processing ◽  
Biomedical Instrumentation ◽  
Condenser Microphone ◽  
Processing Program ◽  
Short Time

This research presents the design and development of the heart sound monitor for biomedical instrumentation which can be worked with a personal computer. The prototype will receive the heart sound via the condenser microphone built-in the stethoscope. The condenser microphone will be conversed the air pressure from heart beats to electrical signal that signal will transformed to computer via sound card. The sound card will be conversed the analog signal to digital signal for process by heart sound processing program developed by LabVIEW program. The signal will be analyzed with short time Fourier transforms in heart sound processing program by graphical user interface. The user is able to select a band pass of signal for filter and choose the frequency spectrum of heart sound for display. The output database from this prototype is necessary for Medical Education or Clinical Practice.

Heart Sound Monitor for Bio-Signal Learning

2013 ◽  
Vol 680 ◽  
pp. 644-648
Author(s):  
Khanchai Tunlasakun
Keyword(s):  
Fourier Transforms ◽  
Heart Sound ◽  
Digital Signal ◽  
Electrical Signal ◽  
Sound Card ◽  
Sound Processing ◽  
Condenser Microphone ◽  
Processing Program ◽  
Band Pass ◽  
Short Time

This research presents the design and development of the heart sound monitor for bio-signal learning which can be worked with a personal computer. The prototype will receive the heart sound via the condenser microphone built-in the stethoscope. The condenser microphone will be conversed the air pressure from heart beats to electrical signal that signal will transformed to computer via sound card. The sound card will be conversed the analog signal to digital signal for process by heart sound processing program developed by LabVIEW program. The signal will be analyzed with short time Fourier transforms in heart sound processing program by graphical user interface. The user is able to select a band pass of signal for filter and choose the power spectrum of heart sound for display. The output database from this prototype is necessary for Medical Education or Clinical Practice. The prototype was tested and it worked satisfactory.

Wavelet and Teager Energy Operator (TEO) for Heart Sound Processing and Identification

2017 ◽  
pp. 495-502 ◽  
Author(s):  
Aiša Ramović ◽  
Lejla Bandić ◽  
Jasmin Kevrić ◽  
Emina Germović ◽  
Abdulhamit Subasi
Keyword(s):  
Heart Sound ◽  
Energy Operator ◽  
Sound Processing ◽  
Teager Energy Operator ◽  
Teager Energy

Heart Sound Processing Model for a Mat-Shaped Device

2021 ◽  
pp. 809-817
Author(s):  
Luca Salvati ◽  
Nicola Cappetti ◽  
Matteo d’Amore ◽  
Anita Fiorentino ◽  
Arcangelo Pellegrino ◽  
...  
Keyword(s):  
Heart Sound ◽  
Sound Processing

Effects of Selected Rhinologic Disorders on the Perception of Nasal Resonance in Children

1984 ◽  
Vol 15 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Michael P. Rastatter ◽  
Melvin Hyman
Keyword(s):  
Allergic Rhinitis ◽  
Clinical Implications ◽  
Normal Children ◽  
Nasal Resonance

A group of sophisticated listeners judged the nasal resonance characteristics of normal children versus children evidencing selected rhinologic disorders under three speaking conditions. Results showed that perceptions of denasality are influenced by both speakers and speaking tasks. That is, children with allergic rhinitis and edemic adenoids were perceived as being denasal when they produced VCV utterances and recited sentences. However, their resonance characteristics were deemed normal for vowel productions. Interestingly, children with severely deviated septums were judged to have normal nasal resonance under all speaking conditions. Clinical implications are discussed.

Perceptions of Stuttering of Different Age Groups

2019 ◽  
Vol 4 (6) ◽  
pp. 1311-1315
Author(s):  
Sergey M. Kondrashov ◽  
John A. Tetnowski
Keyword(s):  
Age Groups ◽  
School Age Children ◽  
Clinical Implications ◽  
School Age ◽  
Fourth Edition ◽  
Self Perception ◽  
Behavioral Measures ◽  
Self Rating ◽  
Comparison Results ◽  
Subject Pool

Purpose The purpose of this study was to assess the perceptions of stuttering of school-age children who stutter and those of adults who stutter through the use of the same tools that could be commonly used by clinicians. Method Twenty-three participants across various ages and stuttering severity were administered both the Stuttering Severity Instrument–Fourth Edition (SSI-4; Riley, 2009 ) and the Wright & Ayre Stuttering Self-Rating Profile ( Wright & Ayre, 2000 ). Comparisons were made between severity of behavioral measures of stuttering made by the SSI-4 and by age (child/adult). Results Significant differences were obtained for the age comparison but not for the severity comparison. Results are explained in terms of the correlation between severity equivalents of the SSI-4 and the Wright & Ayre Stuttering Self-Rating Profile scores, with clinical implications justifying multi-aspect assessment. Conclusions Clinical implications indicate that self-perception and impact of stuttering must not be assumed and should be evaluated for individual participants. Research implications include further study with a larger subject pool and various levels of stuttering severity.

Treatment Considerations for Adolescents Who Exhibit Cognitive/Communication Problems: A Neuroscience Perspective

2020 ◽  
Vol 5 (6) ◽  
pp. 1767-1775
Author(s):  
Martha S. Burns
Keyword(s):  
Social Communication ◽  
Transition Period ◽  
Clinical Intervention ◽  
Review Article ◽  
Sensitive Period ◽  
Clinical Implications ◽  
Evidence Based ◽  
Communication Problems ◽  
Treatment Considerations ◽  
Behavioral Growth

Purpose Adolescence is a period of substantial neurophysiological and behavioral growth, representing a second sensitive period of brain development. It is a psychological and social transition period between childhood and adulthood with many beneficial changes occurring, especially with respect to potential responsiveness to clinical intervention. However, adolescent behavioral complexities introduce clinical challenges as well. The purpose of this review article is to review the current neuroimaging research on neurophysiological changes observed during adolescence and the cognitive and social behavioral counterparts, with specific attention to the clinical implications. The review article will then summarize currently available intervention tools that can be utilized by speech-language pathologists working with this population. It will conclude with available evidence-based social-communication approaches that may be applicable as well as available evidence-based supplemental technological cognitive interventions that may be useful in working with adolescents who exhibit language and communication issues. Conclusion As a transition period between childhood and adulthood, adolescence represents a second sensitive period during which there is opportunity for clinically derived beneficial cognitive and communication growth.

Laryngeal Manifestations of Autoimmune Diseases

2020 ◽  
Vol 5 (2) ◽  
pp. 439-456
Author(s):  
Jenny L. Pierce
Keyword(s):  
Autoimmune Disease ◽  
Autoimmune Diseases ◽  
Patient Outcomes ◽  
Correct Diagnosis ◽  
Upper Airway ◽  
Clinical Implications ◽  
Laryngeal Function ◽  
The Past ◽  
Referral Practices ◽  
Timely Referral

Purpose This review article provides an overview of autoimmune diseases and their effects on voice and laryngeal function. Method A literature review was conducted in PubMed. Combinations of the following keywords were used: “autoimmune disease and upper airway,” “larynx,” “cough,” “voice,” “dysphonia,” and “dyspnea.” Precedence was given to articles published in the past 10 years due to recent advances in this area and to review articles. Ultimately, 115 articles were included for review. Results Approximately 81 autoimmune diseases exist, with 18 of those highlighted in the literature as having laryngeal involvement. The general and laryngeal manifestations of these 18 are discussed in detail, in addition to the clinical implications for a laryngeal expert. Conclusions Voice, breathing, and cough symptoms may be an indication of underlying autoimmune disease. However, these symptoms are often similar to those in the general population. Appropriate differential diagnosis and timely referral practices maximize patient outcomes. Guidelines are provided to facilitate correct diagnosis when an autoimmune disease is suspected.

The Nature of Deviant Articulation

1973 ◽  
Vol 38 (2) ◽  
pp. 156-161 ◽  
Author(s):  
Laurence B. Leonard
Keyword(s):  
Clinical Implications ◽  
Phonological System

This paper examines the credibility of deviant articulation as a less mature phonological system and as an individual phonological system with its own rules. Evidence is presented suggesting that both types of deviant phonological systems may occur in the articulatory defective population. The clinical implications of each type of deviant system are presented.

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