1. A method comprising: training, at a user terminal, a first voice conversion model with respect to a training source speech of a first speaker and a second voice conversion model with respect to a training target speech of a second speaker; wherein training the first voice conversion model further comprises determining a first conversion function for transforming any source speech into corresponding synthetic speech, the first conversion function receiving the training source speech of the first speaker and a training source synthetic speech of the first speaker as inputs, and wherein training the second voice conversion model further comprises determining a second conversion function for transforming synthetic speech into corresponding target speech, the second conversion function receiving the training target speech of the second speaker and a training target synthetic speech of the second speaker as inputs, and wherein said training target synthetic speech is produced from said training target speech; processing, at the user terminal, source speech of the first speaker using the first voice conversion model to convert the source speech to synthetic speech; and processing, at the user terminal, an output of the first voice conversion model at the second voice conversion model to produce target speech corresponding to the source speech.
1. A method comprising: training, at a user terminal, a first voice conversion model with respect to a training source speech of a first speaker and a second voice conversion model with respect to a training target speech of a second speaker; wherein training the first voice conversion model further comprises determining a first conversion function for transforming any source speech into corresponding synthetic speech, the first conversion function receiving the training source speech of the first speaker and a training source synthetic speech of the first speaker as inputs, and wherein training the second voice conversion model further comprises determining a second conversion function for transforming synthetic speech into corresponding target speech, the second conversion function receiving the training target speech of the second speaker and a training target synthetic speech of the second speaker as inputs, and wherein said training target synthetic speech is produced from said training target speech; processing, at the user terminal, source speech of the first speaker using the first voice conversion model to convert the source speech to synthetic speech; and processing, at the user terminal, an output of the first voice conversion model at the second voice conversion model to produce target speech corresponding to the source speech. 2. The method of claim 1 , wherein utterances of the training source speech are not parallel to utterances of the training target speech.