FAIL (the browser should render some flash content, not this).


"a powerful learning tool..."

J.J, Ward, MEd, RRT in Respiratory Care



Download WAV file (431 kB)     

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.