7. A system comprising: one or more computers and one or more storage devices storing instructions that are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising: obtaining a recording of a particular user speaking a name of a contact; receiving a voice dialing command including an utterance of the name of the contact by the particular user; and in response to receiving the voice dialing command including the utterance of the name of the contact by the particular user, providing, for output, the recording of the particular user speaking the name of the contact or a text-to-speech audio output of the name, and initiating a voice dialing operation between the particular user and the contact.
11. The system of claim 7 , wherein receiving a voice dialing command including an utterance of the name of the contact by the particular user comprises: receiving input that initiates execution of a voice dialing routine; and receiving the utterance of the name of the contact by the particular user.