The normal "vesicular" sounds were recorded over the left anterior upper chest of a 15 year old male adolescent.
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 grey (low). Calibrated air flow is displayed at the top (I = inspiration, above zero; E = expiration, below zero).