Machine-control of a device based on machine-detected transitions

A non-transitory machine-readable storage medium comprising instructions that, when executed, cause one or more processors to at least:

• determine an audio characteristic in audio, the audio characteristic being represented by an audio characteristic value;
• detect a transition between a music category and a talk category by comparing the audio characteristic value to a threshold value among a set of threshold values, the set of threshold values corresponding to different categories in a set of categories including the music category and the talk category;
• and
• control a device to initiate extracting fingerprints responsive to the detected transition between the music category and the talk category.

A method comprising:

• determining, by executing an instruction using one or more processors, an audio characteristic in audio, the audio characteristic being represented by an audio characteristic value;
• detecting, by executing an instruction using the one or more processors, a transition between a music category and a talk category by comparing the audio characteristic value to a threshold value among a set of threshold values, the set of threshold values corresponding to different categories in a set of categories including the music category and the talk category;
• and
• controlling, by executing an instruction using the one or more processors, a device to initiate extracting fingerprints responsive to the detected transition between the music category and the talk category.