Methods and apparatus to extract a pitch-independent timbre attribute from a media signal
View Patent ↗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 receive a media signal; a timbre database to store reference pitch-less timbre spectrums; and a processor to: compare a pitch-less timbre spectrum of the media signal to the reference pitch-less timbre spectrums; and classify the media signal based on data corresponding to a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums that matches the pitch-less timbre spectrum, the classification corresponding to at least one of an instrument or a genre.
1. An apparatus comprising:
an interface to receive a media signal;
a timbre database to store reference pitch-less timbre spectrums; and
one or more processors to:
compare a pitch-less timbre spectrum of the media signal to the reference pitch-less timbre spectrums; and
classify the media signal based on data corresponding to a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums that matches the pitch-less timbre spectrum, the classification corresponding to at least one of an instrument or a genre.
2. The apparatus of claim 1 , wherein the one or more processors are to identify a media source of the media signal based on at least one of the timbre or the classification.
3. The apparatus of claim 2 , wherein the one or more processors are to generate a report based on at least one of the classification or the identification.
4. The apparatus of claim 1 , wherein the one or more processors are to, when the pitch-less timbre spectrum of the media signal does not match a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums, prompt for additional information corresponding to the media signal.
5. The apparatus of claim 4 , wherein the timbre database is to store the pitch-less timbre spectrum of the media signal as a reference pitch-less timbre spectrum in conjunction with the additional information.
6. The apparatus of claim 1 , further including an audio settings adjuster to determine a device setting adjustment based on the classification.
7. The apparatus of claim 6 , wherein the one or more processors are to generate a report including the device setting adjustment.
8. The apparatus of claim 7 , wherein the interface is to transmit the report to a device that output the media signal.
9. The apparatus of claim 1 , wherein the pitch-less timbre spectrum of the media signal corresponds to an inverse transform of a magnitude of a transform of a spectrum of the media signal.
10. A non-transitory computer readable storage medium comprising instructions which, when executed cause a machine to at least:
compare a pitch-less timbre spectrum of an obtained media signal to reference pitch-less timbre spectrums; and
classify the media signal based on data corresponding to a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums that matches the pitch-less timbre spectrum, the classification corresponding to at least one of an instrument or a genre.
11. The computer readable storage medium of claim 10 , wherein the instructions cause the machine to identify a media source of the media signal based on at least one of the timbre or the classification.
12. The computer readable storage medium of claim 11 , wherein the instructions cause the machine to generate a report based on at least one of the classification or the identification.
13. The computer readable storage medium of claim 10 , wherein the instructions cause the machine to, when the pitch-less timbre spectrum of the media signal does not match a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums, prompt for additional information corresponding to the media signal.
14. The computer readable storage medium of claim 13 , wherein the instructions cause the machine to store the pitch-less timbre spectrum of the media signal as a reference pitch-less timbre spectrum in conjunction with the additional information.
15. The computer readable storage medium of claim 10 , wherein the instructions cause the machine to determine a device setting adjustment based on the classification.
16. The computer readable storage medium of claim 15 , wherein the instructions cause the machine to generate a report including the device setting adjustment.
17. The computer readable storage medium of claim 16 , wherein the instructions cause the machine to transmit the report to a device that output the media signal.
18. The computer readable storage medium of claim 10 , wherein the pitch-less timbre spectrum of the media signal corresponds to an inverse transform of a magnitude of a transform of a spectrum of the media signal.
19. A method comprising:
obtaining a media signal;
comparing a pitch-less timbre spectrum of the media signal to the reference pitch-less timbre spectrums; and
classifying the media signal based on data corresponding to a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums that matches the pitch-less timbre spectrum, the classification corresponding to at least one of an instrument or a genre.
20. The method of claim 19 , further including identifying a media source of the media signal based on at least one of the timbre or the classification.