1. A method to identify media, comprising: generating, by executing an instruction with a processor, interval sums based on peaks in a media signal received at a monitored site corresponding to media; identifying, by executing an instruction with the processor, signal peaks based on the generated interval sums; generating, by executing an instruction with the processor, a signature of the received media signal based on normalized curve features, wherein the normalized curve features respectively correspond to the identified signal peaks at corresponding temporal locations of the corresponding signal peak; and determining, by executing an instruction with the processor, whether the media signal corresponds to a reference signal based on a comparison of a reference signature and the signature of the received media signal.