Real-Time Implementation of a Frequency Shifter for Enhancement of Heart Sounds Perception on VLIW DSP Platform

• Published in: Electronics (Basel) Vol. 12; no. 20; p. 4359
• Main Authors: Muto, Vincenzo, Andreozzi, Emilio, Cappelli, Carmela, Centracchio, Jessica, Di Meo, Gennaro, Esposito, Daniele, Bifulco, Paolo, De Caro, Davide
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.10.2023
• Subjects: Algorithms; Auscultation; Cardiovascular diseases; Diagnosis; Digital signal processing; Digital signal processors; Emergency medical care; Energy dissipation; FIR filters; Fourier transforms; Frequency shift; Frequency shifters; Frequency synthesizers; Heart; Helicopters; Hilbert transformation; Human subjects; Libraries; Methods; Microprocessors; Noise; Perception; Perceptions; Random noise; Rapid prototyping; Real time operation; Sensors; Signal processing; Sound; Sound recordings; Sounds; Statistical analysis; Trigonometric functions; Very Low Frequencies; Wavelet transforms; Italy

Auscultation of heart sounds is important to perform cardiovascular assessment. External noises may limit heart sound perception. In addition, heart sound bandwidth is concentrated at very low frequencies, where the human ear has poor sensitivity. Therefore, the acoustic perception of the operator c...