Cadence determination and media content selection

A method of cadence-based media playback for use during repetitive-motion activities comprising:

• determining a cadence associated with a repetitive motion activity based on acceleration data captured by a plurality of accelerometers, wherein the acceleration data comprises sequences of acceleration sample data captured from each of the plurality of accelerometers over a duration of time, by:
• filtering the sequences of measurements based on frequency to generate filtered sequences;
• identifying a signal corresponding to the cadence from the filtered sequences by combining the filtered sequences having a highest energy at each particular time interval;
• calculating aggregate values corresponding to periods of oscillation of the filtered sequences over intervals during the duration of time;
• and
• calculating a cadence value based on the aggregate values;
• identifying a media content item based on the determined cadence;
• and
• playing back the identified media content item.

A method of cadence-based media playback for use during repetitive-motion activities comprising:

• capturing acceleration data by a plurality of accelerometers over a duration of time, wherein the acceleration data comprises sequences of acceleration measurements captured at particular times throughout the duration by each of the accelerometers;
• filtering each of the sequences of measurements based on frequency to generate filtered sequences;
• identifying a cadence signal corresponding to the cadence from the filtered sequences, wherein the signal corresponding to the cadence is identified by combining the filtered sequences having a highest energy during subintervals of the duration;
• calculating a sequence of first aggregate values corresponding to periods of oscillation of the cadence signal over intervals during the duration of time;
• smoothing the sequence of first aggregate values to generate a sequence of second aggregate values;
• determining whether the sequence of first aggregate values and the sequence of second aggregate values satisfy predetermined tolerances, wherein the predetermined tolerances include a difference tolerance and a duration requirement;
• and
• upon determining that the predetermined tolerances are satisfied, calculating an initial cadence value based on the sequence of first aggregate values.