Method and apparatus for controlling band split compressors...

Details Method and apparatus for controlling band split compressors... Method and apparatus for controlling band split compressors...

H - Electricity

04

R

H04R 25/00 (2006.01) H03G 3/20 (2006.01)

Patent

CA 2620377

A method and hearing aid for processing sound signals for hearing impaired persons by providing multi-band compression processing is described. An input sound signal is filtered into a number of frequency bands to obtain band split signals. A signal level for each of the band split signals is determined and the frequency bands are arranged into a number of groups. Based on the signal levels in each of the groups, a compressor input level for a number of band split compressors each associated to one of the frequency bands is calculated. A compressor gain for each band split compressor is determined based on the corresponding compressor input signal and the band split signals are amplified with the corresponding compressor gain to produce an output sound signal.

Procédé et prothèse auditive pour le traitement des signaux sonores par compression multi-bande pour personnes mal entendantes. Un signal d'entrée est filtré en un certain nombre de bandes de fréquence pour être transformé en signaux multi-bande. Un niveau de signal est déterminé pour chaque signal de bande de bande partagée et les bandes de fréquence sont agencées en un certain nombre de groupe. A partir des niveaux de signal de chaque groupe, on calcule un niveau d'entrée de compresseur pour un certain nombre de compresseurs de bandes partagées associés chacun à l'une des bandes de fréquence. On détermine un gain de compression pour chaque compresseur à partir du signal d'entrée de compresseur correspondant et les signaux de partage de bande sont amplifiés avec le gain de compression correspondant en vue de l'obtention d'un signal sonore de sortie.

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