Methods and apparatus to extract a pitch-independent timbre attribute from a media signal
AssigneeThe Nielsen Company (US), LLC
InventorZafar Rafii
Life of this patent
Estimating the term…
Abstract
Methods and apparatus to classify media based on a pitch-independent timbre attribute from a media signal are disclosed. An example apparatus includes an interface to access a media signal; and an audio characteristic extractor to determine a spectrum of audio corresponding to the media signal; and determine a timbre-independent pitch attribute of the audio based on an inverse transform of a complex argument of a transform of the spectrum.
Claims20
An apparatus to extract a timbre-independent pitch attribute from a media signal, the apparatus comprising:
- an interface to access a media signal;
- and
- an audio characteristic extractor to:
- determine a spectrum of audio corresponding to the media signal;
- and
- determine a timbre-independent pitch attribute of the audio based on an inverse transform of a complex argument of a transform of the spectrum.
A non-transitory computer readable storage medium comprising instructions which, when executed, cause a machine to at least:
- determine a spectrum of audio corresponding to a media signal;
- and
- determine a timbre-independent pitch attribute of the audio based on an inverse transform of a complex argument of a transform of the spectrum.
A method to extract a timbre-independent pitch attribute from a media signal, the method comprising:
- determining, by executing an instruction with a processor, a spectrum of audio corresponding to a received media signal;
- and
- determining, by executing an instruction with the processor, a timbre-independent pitch attribute of the audio based on an inverse transform of a complex argument of a transform of the spectrum.
Dependencies are inferred from the claim text.