New Effective and Useful Analysis of Sound and Vibration

Leonhard supplies unique solutions for sound and vibration analyses based on a new model for auditory perception. The new model is called Auditory Perceptual Pulse Analysis (APPA) because the model is based on mathematical and physical phenomena that correspond very much to how the human ear perceive sound. The methods in the model is new and have not have been used for analysis of sound and vibration before. The mathematical principles are much more effective for analysis of signal with dynamic behaviour than frequency analysis. APPA is panted and patent pending.

 APPA analyses all kind of mechanical faults in moving machinery. It might be defects of ball bearings or of gear wheels in a gearbox. Also supervising mechanical machines or in general processes where the sound picture reveals quality or faults. It might be cutting in wood or metal, or it might be defining a specific sound picture of a product as the sound of a motorbike or the sound of a car door slamming.

APPA is very applicable for speech analysis. Even vowels that are whispered can be identified. It will also be applicable for establishing methods for analysing the intelligibility of speech, as well as methods for analysing sharpness and roughness of a sound picture, and the pitch of speech or music. APPA will also be able to lead to speaker independent and much more robust speech recognition and more efficient speech compression with higher quality in narrowband telecommunication than known today.

Leonhard is a company with more than 10 years experience in advanced signal process in the area of dynamic behaviour of auditory signals.