Patent ID: 8295518

Claim:
A filter bank system for a hearing aid, comprising: an analysis filter bank configured to receive an input signal and to split the input signal into sub-band signals; a processing device for receiving and manipulating at least one of the sub-band signals to generate a manipulated sub-band signal; and a synthesis filter bank for combining the manipulated sub-band signal with at least one further sub-band signal; wherein one or both of the following is true: a stop-band attenuation of at least one transfer function of said analysis filter bank is composed of: a separately configurable, frequency-independent analysis basic attenuation component; and a separately configurable, frequency-dependent analysis attenuation component; and/or a stop-band attenuation of at least one transfer function of said synthesis filter bank is composed of: a separately configurable, frequency-independent synthesis basic attenuation component; a separately configurable, frequency-dependent and manipulation-dependent first synthesis attenuation component; and a separately configurable, frequency-dependent second synthesis attenuation component.