Patent ID: 8588445

Claim:
A hearing aid processing system, comprising: a hearing aid processing apparatus which outputs an audio signal which has been subjected to hearing aid signal processing to ears of a listener; and an adjustment apparatus which outputs parameters used in the hearing aid signal processing to the hearing aid processing apparatus, wherein the adjustment apparatus includes: an auditory filter information obtaining unit that obtains characteristics of a band pass filter having a greatest bandwidth in an auditory filter of the listener; and a parameter setting unit that generates the parameters based on the characteristics obtained by the auditory filter information obtaining unit, and assigns the parameters to the hearing aid signal processing units, and the hearing aid processing apparatus includes: an audio input unit that receives an input audio signal; the hearing aid signal processing units that generate first and second output signals each having different frequency characteristics, from an input signal based on the input audio signal inputted by the audio input unit, by executing the hearing aid signal processing based on the parameters obtained from the parameter setting unit; a first audio output unit that outputs, as an audio signal, the first output signal generated by one of the hearing aid signal processing units to one of a left ear and a right ear of the listener; and a second audio output unit that outputs, as an audio signal, the second output signal generated by the other one of the hearing aid signal processing units to the other one of the left ear and the right ear of the listener, wherein the hearing aid processing apparatus includes: a first band stop filter, as a high pass filter in the one of the hearing aid signal processing units, which attenuates only a predetermined low frequency band below a cut-off frequency selected in a specific band which is a band of the band pass filter having the greatest bandwidth so as to generate the first output signal from the input signal, and a second band stop filter, as a low pass filter in the other one of the hearing aid signal processing units, which attenuates only a predetermined high frequency band at and above the cut-off frequency so as to generate the second output signal from the input signal.