Analysis system for respiratory sounds includes sampling and processing module producing sound parameters for comparison with database

• Main Authors: KEHAYOFF IVAN, KEHYAYAN GEORGES
• Format: Patent
• Language: English; French
• Published: 25.10.2002
• Edition: 7
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The sound analysis system includes a sampling process and memory to hold such samples. The samples are processed in order to determine specific parameters identifying specific sound components. Such parameters may then be compared with a database of sound information, in order to assist in recognition of the type of sound and likely causes. The device for the analysis of respiratory noises comprises a working memory capable of storing samples of a signal representing a respiratory noise. It also includes a processing module effecting a transformation of the signal in time and frequency. A system is provided for marking, within a transformed signal, at least one component relating to an added noise. The processing module is configured to extract from the signal a set of parameters characteristic of this noise. A representation of the signal in time and frequency is produced, and this may be compared with a database of stored parameters in a database in order to enable recognition of the type of sound being produced. Comparison may include scanning of frequency and amplitude, for different successive instants, to enable recognition of specific characteristics. L'invention concerne un dispositif d'aide à l'analyse de bruits adventices, tels que des sibilances ou des crépitants. Selon l'invention, ces bruits adventices sont repérés sur des représentations spectrales en temps/ fréquences et paramétrés selon un jeu de coefficients qui les caractérisent. Ces jeux de coefficients sont stockés en mémoire pour l'élaboration d'une base de données ou encore comparés à des sons synthétisés, à partir de paramètres tirés d'une telle base de données.