Method of processing voice signals
AssigneeIndustrial Technology Research Institute
InventorsTai-Huei Huang, Po-Kai Huang
Life of this patent
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Abstract
A method of processing voice signals suitable for enhancing the speech discrimination ability of a hearing impaired person is disclosed. First, a voice signal is received, and the received voice signal is divided into a plurality of voice frames. A frequency spectrum analysis is conducted on one of the voice frames to estimate the effective bandwidth of the voice frame. Next, a frequency transposition process is performed on the voice signal so as to suit the auditory sensation bandwidth of a hearing impaired person. In addition, an energy compensation process is performed on the voice frame after performing the frequency transposition process so as to compensate the reduced energy brought by the frequency transposition process.
Claims15
A method of processing voice signals, suitable for enhancing voice recognition ability of a person, comprising:
- receiving a voice signal, wherein the voice signal is divided into a plurality of voice frames according to a window function;
- converting one of the voice frames into the frequency domain, and estimating an effective bandwidth of the voice frame;
- and
- computing a frequency transposition function according to an amount of the effective bandwidth and performing a frequency transposition process on the voice signal with the computed frequency transposition function.
A method of processing voice signals, suitable for enhancing voice recognition ability of a person, comprising:
- receiving a voice signal, wherein the voice signal is divided into a plurality of voice frames according to a window function;
- judging whether one of the voice frames is a consonant featuring high-frequency voice;
- converting one of the voice frame into the frequency domain and estimating an effective bandwidth of the voice frame, when the voice frame is judged as a consonant featuring high-frequency voice;
- and
- computing a frequency transposition function according to an amount of the effective bandwidth and performing a frequency transposition process on the voice signal with the computed frequency transposition function.
Dependencies are inferred from the claim text.