| 摘要 |
This specification describes technologies relating to a phone-based system for targeted advertisement delivery by identifying broadcast audio advertisements, and methods of providing such a system. In one aspect, a method includes receiving a user-initiated telephone connection that includes an audio sample of an advertisement from a broadcast source, and identifying the audio advertisement sample. The method also includes retrieving a metadata associated with the identified audio advertisement sample, obtaining a targeted advertisement information that most closely corresponds to the retrieved metadata. The method further includes transmitting a message including the targeted advertisement information. Other implementations of this aspect include corresponding systems, apparatus, and computer program products.
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