These tracheal sounds were recorded over the
trachea of a healthy 26 year old man. (Note: this is a stereo file with
simultaneous recording over trachea and posterior right lower lung)
The respirosonogram
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 gray (low). Calibrated
air flow is displayed at the top (I = inspiration, above zero; E = expiration,
below zero). A simultaneously recorded electrocardiogram (ECG) is shown at the bottom.
