Abstract: A computer implemented speech processing method for generating translated speech comprising: receiving a first speech signal corresponding to speech spoken in a second language; generating first text data from the first speech signal, the first text data corresponding to text in the second language; generating second text data from the first text data, the second text data corresponding to text in a first language; responsive to obtaining a second speech signal corresponding to the second text spoken in the first language and in a second voice: extracting first acoustic data from the second speech signal; modifying the first acoustic data based on one or more acoustic data characteristics corresponding to a first voice; and generating an output speech signal using a text to speech synthesis model taking the second text data as input and using the modified first acoustic data, the output speech signal corresponding to the second text spoken in the first language.