Method of and hearing aid for enhancing the accuracy of sounds heard by a hearing-impaired listener

1. A method for enhancing the accuracy of sounds heard by a hearing-impaired listener, comprising steps of:

inputting a sound to a hearing aid;

determining whether the input sound meets a criterion wherein a proportion of a sound energy over 1000 Hz of the input sound to all sound energy of the input sound is greater than 70%; and a proportion of a sound energy under 2000 Hz of the input sound to all sound energy of the input sound is less than 20%;

if the input sound meets said criterion, performing steps (A)-(E) as follows:

(A) receiving an input sound, wherein the input sound includes a high frequency section and a lower frequency section, wherein the frequency of the high frequency section is between 1000 Hz and 14000 Hz, and the frequency of the lower frequency section is between 0 Hz and 6000 Hz;

(B) increasing the energy of the high frequency section to form a high frequency sound processing section;

(C) lowering the frequency of the high frequency sound processing section to form a frequency-lowered high frequency sound-amplifying section;

(D) combining the lower frequency section with the frequency-lowered high frequency sound-amplifying section to form a modified input sound; and

(E) outputting the modified input sound.

2. The method for enhancing the accuracy of sounds heard by a hearing-impaired listener as claimed in claim 1 , wherein in step (E), the modified input sound is outputted after undergoing energy amplification.