Audio-frequency processing device and sound-volume management method

Audio-frequency processing device and sound-volume management method

  • CN 1,980,054 B
  • Filed: 11/30/2005
  • Issued: 05/23/2012
  • Est. Priority Date: 11/30/2005
  • Status: Active Grant
First Claim
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1. sound-volume management method, the volume when being used to manage an apparatus for processing audio output audio is characterized in that, comprises step:

  • The control signal of response user manual adjustments volume is regulated current gain value;

    Obtain digital noise signal, and calculate the average noise volume level of this numeral noise signal in one first Preset Time section, this average noise volume level is set at one with reference to the noise volume level;

    Periodically obtain digital noise signal, calculate the average noise volume level of this numeral noise signal in one second Preset Time section, and the average noise volume level that calculates this numeral noise signal is compared to this rate of change with reference to the noise volume level;

    Periodically obtain simultaneously a plurality of sampling values and the current gain value of digital audio and video signals in this second Preset Time section, and calculate the audio energy values of this digital audio and video signals in this second Preset Time section based on these a plurality of sampling values and current gain value;

    With the audio energy values of this rate of change and this digital audio and video signals as parameter, thereby confirm the amplitude of accommodation of the audio energy values of this digital audio and video signals;

    Calculate preferable yield value based on a plurality of sampling values of this audio signal and the audio energy values after the adjusting;

    AndSend this preferable yield value signal.

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