Acoustic signal corrector and acoustic signal correcting method

Abstract

According to one embodiment, an acoustic signal corrector includes: an output module; a selection receiver; and a holder. The output module is configured to output a plurality of acoustic signals. Amplitude values of frequencies within a frequency band of each of the acoustic signals are emphasized as emphasized amplitude values. A plurality of amplitude values among the emphasized amplitude values are corrected as corrected amplitude values at some of frequencies within the frequency band. Resonance is possibly induced in the frequency band by sealing an ear canal. The selection receiver is configured to receive a selection of one of the acoustic signals output by the output module. The holder is configured to hold, as a configuration for sound quality correction, a configuration corresponding to the correction of the one of the acoustic signals at the some of the frequencies.

1 . An acoustic signal corrector, comprising:
 an output module configured to output a plurality of acoustic signals, amplitude values of frequencies within a frequency band of each of the acoustic signals being emphasized as emphasized amplitude values, a plurality of amplitude values among the emphasized amplitude values being corrected as corrected amplitude values at some of the frequencies within the frequency band, resonance being possibly induced in the frequency band by sealing an ear canal;   a selection receiver configured to receive a selection of one of the acoustic signals output by the output module; and   a holder configured to hold, as a configuration for sound quality correction, a configuration corresponding to the correction of the one of the acoustic signals at the some of the frequencies.   
     
     
         2 . The acoustic signal corrector of  claim 1 , wherein the output module comprises:
 an amplifier configured to extract a component of the frequency band comprised in each of the acoustic signals, and add the component to the frequency band of each of the acoustic signals; and   a signal processor configured to output the acoustic signals each with the amplitude values corrected at the some of the frequencies within the frequency band processed by the amplifier.   
     
     
         3 . The acoustic signal corrector of  claim 2 , wherein the amplifier comprises:
 an extractor configured to extract the component of the frequency band comprised in each of the acoustic signals;   an adder configured to add the component extracted by the extractor to the frequency band comprised in each of the acoustic signals.   
     
     
         4 . The acoustic signal corrector of  claim 1 , wherein the output module comprises:
 a first storage module configured to store each of the acoustic signals comprising the emphasized amplitude values; and   a signal processor configured to output each of the acoustic signals stored in the first storage module, the amplitude values among the emphasized amplitude values of each of the acoustic signals stored in the first storage module being corrected at the some of the frequencies in the frequency band as the corrected amplitude values.   
     
     
         5 . The acoustic signal corrector of  claim 1 , wherein the output module comprises:
 a storage module configured to store each of the acoustic signals comprising the corrected amplitude values; and   a signal output module configured to output each of the acoustic signals stored in the storage module.   
     
     
         6 . The acoustic signal corrector of any one of  claim 1 , wherein correction of the amplitude values at each of the some of the frequencies reduces amplitude values of a band portion with each of the some of the frequencies as a center. 
     
     
         7 . The acoustic signal corrector of any one of  claim 1 , wherein
 the selection receiver is configured to provide a selection item for receiving the selection, the configuration for the correction at each of the some of the frequencies being assigned to the selection item, and   the output module is configured to output each of the acoustic signals in which the amplitude values among the emphasized amplitude values are corrected at the some of the frequencies corresponding to the configuration assigned to the selection item received by the selection receiver.   
     
     
         8 . The acoustic signal corrector of  claim 7 , wherein the selection receiver is configured to hierarchically divide the configuration instructing to correct the amplitude values at each of the some of the frequencies into groups based on a number of selection items, and assign one configuration selected from a same hierarchical group for each of the items to provide a user interface receiving a selection of one configuration for an upper hierarchical group to an lower hierarchical group. 
     
     
         9 . An acoustic signal correcting method, comprising:
 outputting, by an output module, a plurality of acoustic signals, amplitude values of frequencies within a frequency band of each of the acoustic signals being emphasized as emphasized amplitude values, a plurality of amplitude values among the emphasized amplitude values being corrected at some of frequencies within the frequency band, resonance being possibly induced in the frequency band by sealing an ear canal;   receiving, by a selection receiver, a selection of one of the acoustic signals output by the output module; and   holding, by a holder, as a configuration for sound quality correction, a configuration corresponding to the correction of the one of the acoustic signals at the some of the frequencies.