System for verifying broadcast of a commercial message

A broadcast verification system comprising:

• an audio signal creation device for creating an audio signal to be broadcast from a broadcast station;
• and
• a verification device for receiving the broadcast signal broadcast from the broadcast station, and verifying whether the audio signal is contained in the broadcast signal,
• wherein said audio signal creation device comprises ID information adding means for adding ID information indicating contents of the audio signal to the audio signal by selectively ejecting/not ejecting a plurality of predetermined frequency components of the audio signal, and
• said verification device comprises:
• ID information extracting means for extracting the ID information from the broadcast signal depending on whether the plurality of predetermined frequency components are ejected/not ejected from the broadcast signal;
• and
• determination means for checking on the basis of the ID information extracted by said ID information extracting means whether the audio signal is broadcast according to a predetermined schedule.