1. A method for text-to-speech synthesis with personalized voice, comprising: receiving, at a mobile communications device operated by a user, incidental audio speech data from a sending device operated by a remote input speaker, wherein the speech data of the remote input speaker is received over a first network communication link during a voice communication between the remote input speaker and the user of the mobile communications device; generating, by the user's mobile communications device, a voice dataset for the remote input speaker based, at least in part, on the incidental audio speech data; receiving, over a second network communication link, text data at the user's mobile communications device, wherein the text data is sent from the sending device subsequent to the voice communication; and converting, by the user's mobile communications device, the text data to synthesized speech, at least in part, using the voice dataset to personalize the synthesized speech to sound like the remote input speaker.