Methods and apparatus to measure exposure to broadcast signals having embedded data
Example methods and apparatus to measure exposure to broadcast signals having embedded data are disclosed. Example meters disclosed herein are to decode a watermark from a first audio signal to obtain an identifier of a broadcast station, and query a data structure based on (i) the identifier of the broadcast station obtained from the watermark and (ii) a location, the query to obtain a transmission frequency of a broadcast signal corresponding to the audio signal. Disclosed example meters are also to tune a radio to the transmission frequency of the broadcast signal, and compare the first audio signal with a second audio signal from the radio to verify an identity of the broadcast station.
1. A meter comprising:
at least one memory;
instructions in the meter; and
processor circuitry to execute the instructions to at least:
decode a watermark from a first audio signal to obtain an identifier of a broadcast station;
query a data structure based on (i) the identifier of the broadcast station obtained from the watermark and (ii) a location, the query to obtain a transmission frequency of a broadcast signal corresponding to the first audio signal;
tune a radio to the transmission frequency of the broadcast signal; and
compare the first audio signal with a second audio signal from the radio to verify an identity of the broadcast station.
2. The meter of claim 1 , wherein the processor circuitry is to:
decode data from the broadcast signal tuned by the radio; and
report the decoded data to at least one of a remote server or an external device.
3. The meter of claim 2 , wherein the processor circuitry is to:
accept an input representative of a user preference; and
associate the user preference with the decoded data.
4. The meter of claim 3 , wherein the processor circuitry is to report the user preference with the decoded data to the at least one of a remote server or an external device.
5. The meter of claim 1 , wherein the data structure is a lookup table.
6. The meter of claim 1 , wherein the processor circuitry is to obtain the location from the watermark.
7. The meter of claim 1 , further including a location detector, wherein the processor circuitry is to obtain the location from the location detector.
8. A meter comprising:
at least one memory;
instructions in the meter; and
processor circuitry to execute the instructions to at least:
decode a watermark from a first audio signal to obtain a transmission frequency of a broadcast signal corresponding to a broadcast station;
tune a radio to the transmission frequency of the broadcast signal;
compare the first audio signal with a second audio signal from the radio to verify an identity of the broadcast station;
decode data from the broadcast signal tuned by the radio; and
report the decoded data to at least one of a remote server or an external device.
9. The meter of claim 8 , wherein the processor circuitry is to decode the watermark to obtain a location associated with the broadcast station.
10. The meter of claim 8 , wherein the processor circuitry is to decode the watermark to obtain an identifier of the broadcast station.
11. The meter of claim 8 , wherein the decoded data includes media identification information that was embedded in the broadcast signal based on a protocol.
12. The meter of claim 8 , wherein the processor circuitry is to:
accept an input representative of a user preference; and
associate the user preference with the decoded data.
13. The meter of claim 12 , wherein the processor circuitry is to report the user preference with the decoded data to the at least one of a remote server or an external device.
14. At least one non-transitory computer-readable medium comprising computer readable instructions that, when executed, cause at least one processor to at least:
decode a watermark from a first audio signal to obtain a transmission frequency of a broadcast signal corresponding to a broadcast station;
tune a radio to the transmission frequency of the broadcast signal;
compare the first audio signal with a second audio signal from the radio to verify an identity of the broadcast station;
decode data from the broadcast signal tuned by the radio; and
report the decoded data to at least one of a remote server or an external device.
15. The at least one non-transitory computer-readable medium of claim 14 , wherein the instructions cause the at least one processor to decode the watermark to obtain a location associated with the broadcast station.
16. The at least one non-transitory computer-readable medium of claim 14 , wherein the instructions cause the at least one processor to decode the watermark to obtain an identifier of the broadcast station.
17. The at least one non-transitory computer-readable medium of claim 14 , wherein the decoded data includes media identification information that was embedded in the broadcast signal based on a protocol.
18. The at least one non-transitory computer-readable medium of claim 14 , wherein the instructions cause the at least one processor to:
accept an input representative of a user preference;
associate the user preference with the decoded data; and
report the user preference with the decoded data to the at least one of a remote server or an external device.