A new and comparatively inexpensive system for producing sonograms - The Stortfield Sonogram System - is introduced with the assistance of the designer Ian Anderson. It comprises an 8 bit analog-to-digital converter on an IBM PC compatible card and sound analysis software supplied on a floppy disk. A continuous real time display of amplitude or frequency is provided, and print-outs can be obtained in conventional or 3-D format. Sound samples may be saved on disk for repeated analysis. 1ts potential is illustrated with sounds of European and African birds.