This inspiratory squawk and crackles were
recorded over the right posterior upper chest of a 78 year old woman with
interstitial pulmonary fibrosis (this is a stereo file with simultaneous
recording over both right and left lung).
provides a visual representation of the content of the respiratory sound
recording. Time is shown on the horizontal and frequency on the vertical axis.
Sound intensity is indicated on a color scale, ranging from red (loud) over
yellow and light green (medium) to dark green and grey (low). Calibrated air
flow is displayed at the top (I = inspiration, above zero; E = expiration, below