%0 Journal Article
%T A Psychoacoustic "NofM"-Type Speech Coding Strategy for Cochlear Implants
%A Nogueira Waldo
%A B¨ąchner Andreas
%A Lenarz Thomas
%A Edler Bernd
%J EURASIP Journal on Advances in Signal Processing
%D 2005
%I Springer
%X We describe a new signal processing technique for cochlear implants using a psychoacoustic-masking model. The technique is based on the principle of a so-called "NofM" strategy. These strategies stimulate fewer channels ( ) per cycle than active electrodes (NofM; ). In "NofM" strategies such as ACE or SPEAK, only the channels with higher amplitudes are stimulated. The new strategy is based on the ACE strategy but uses a psychoacoustic-masking model in order to determine the essential components of any given audio signal. This new strategy was tested on device users in an acute study, with either 4 or 8 channels stimulated per cycle. For the first condition (4 channels), the mean improvement over the ACE strategy was . For the second condition (8 channels), no significant difference was found between the two strategies.
%K cochlear implant
%K NofM
%K ACE
%K speech coding
%K psychoacoustic model
%K masking
%U http://dx.doi.org/10.1155/ASP.2005.3044