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Method of detecting a predetermined frequency band in an audio data signal, detection device and computer program corresponding thereto

  • US 9,928,852 B2
  • Filed: 12/10/2015
  • Issued: 03/27/2018
  • Est. Priority Date: 12/20/2011
  • Status: Active Grant
First Claim
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1. A method comprising the following acts performed by a terminal having a processor that is configured by instructions stored in a non-transitory computer-readable medium, wherein the method comprises:

  • receiving, by the terminal, an audio data signal which has been previously coded according to a succession of data blocks, among which at least certain blocks contain respectively at least one set of spectral parameters representing a linear prediction filter;

    decoding at least one of said certain blocks that contains at least one set of spectral parameters representing a linear prediction filter, at least one plurality of spectral parameters of said set being decoded as a result of said decoding; and

    implementing, for at least one decoded current block, the following acts;

    calculating, as a function of an index of the decoded spectral parameter closest to a threshold frequency, a value of a decision criterion representing detection of whether a predetermined frequency band is present in said audio data signal received, anddisplaying an HD logo on a display screen of the terminal as a function of the calculated value of the decision criterion to indicate a quality of the audio data signal received and whether the predetermined frequency band is present in said received audio data signal.

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