Preliminary Study on Production of Coarse and Fine Crackles in Respiration Using a Model of Communication Theory

Restoration of Lung Sound Signals Using a Hybrid Wavelet-Based Approach

“…5(c), and Fig. 5(e), airflow source 𝑥 𝑠 (𝑛) is first modulated by the frequency modulation 𝑚 𝑓 cosine wave in (17) with an amplitude of 1 V, and frequency of F = 400 Hz, followed by the amplitude modulation 𝑚 𝑎 sawtooth wave in (18) with an amplitude of 1 V amplitude, and frequency of F = 400 Hz [26], [27]. The noise 𝑣 from ( 2)-( 6) and shown in Fig.…”