HEARING AID SYSTEM ADAPTED FOR PROVIDING ENRICHED SOUND AND A METHOD OF GENERATING ENRICHED SOUND

摘要

A hearing aid (200) configured to provide enriched sound, by forming successive chords defined by a common musical scale. The invention further provides a method of providing enriched sound using a hearing aid system.

主权项

1. A hearing aid system comprising
an acoustical-electrical transducer adapted for converting an acoustical input sound into an electrical audio signal; a noise generator; a signal splitter configured to split the noise generator output signal in at least N parallel branches; N band-pass filters wherein each of said N branches comprises one of said N band-pass filters; level modulating means adapted to control the level of the output signal from the band-pass filters, hereby providing level modulated band-pass filter output signals and further adapted to increase the level of the output signal from one of the band-pass filters while decreasing the level of the output signal from another one of the band-pass filters; first summing means adapted to sum the level modulated band-pass filter output signals from said N branches hereby providing a sound enriched sound signal; harmonic controller means adapted to set the center frequency of the band-pass filters in accordance with a predetermined musical scale and such that at least N−1 of the band-pass filter center frequencies are selected from N−1 different predetermined frequency intervals, and adapted to change the center frequency of at least one of the band-pass filters, in response to a trigger event; timing controller means adapted to trigger the band-pass filter controlling means to change the center frequency of at least one of the band-pass filters in response to the event that the level modulating means has increased the peak level of the output signal from one of the band-pass filters to a first predetermined level, or has decreased the peak level of the output signal from one of the band-pass filters to a second predetermined level; second summing means for adding the sound enriched signal to the electrical audio signal hereby providing an electrical input signal; signal processing means configured to amplify the electrical input signal in order to alleviate a hearing loss of a hearing aid user, hereby providing an electrical output signal; and an electrical-acoustical output transducer for converting the electrical output signal into sound.