Device and method to adjust equalization of moving picture experts group audio layer-3 (MP3) music

Device and method to adjust equalization of moving picture experts group audio layer-3 (MP3) music

  • CN 102,013,879 A
  • Filed: 09/10/2010
  • Published: 04/13/2011
  • Est. Priority Date: 09/10/2010
  • Status: Active Grant
First Claim
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1. the balanced adjusting device of MP3 music is carried out equilibrium and is regulated in the process to the decoding of MP3 bit stream data, comprising:

  • Decoded frequency-region signal is carried out conversion, rebuild the correction inverse discrete cosine transformation device of time-domain signal;

    Enter the advance frequency inversion device of line frequency paraphase of multiphase filter in data;

    AndThe sub-band filter device changes the frequency-region signal contravariant in every group of subband bandwidth into time-domain signal to obtain the PCM value;

    It is characterized in that the balanced adjusting device of described MP3 music also comprises;

    Balanced adjusting device one is to entering the frequency-region signal of revising before the inverse discrete cosine transformation device computing that gains;

    Balanced adjusting device two is to entering the computing that gains of frequency-region signal in every group of subband before the sub-band filter device.

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