1. A method comprising: receiving a speech audio intended for transcription to textual form at a job mapper on a data processing apparatus; dividing, by the job mapper, the received speech audio into first speech segments; identifying, by the job mapper, speakers for sending each first speech segment of the first speech segments; sending, by the job mapper, each first speech segment to the speakers determined for a particular first speech segment; receiving, at the job mapper, second speech segments from the speakers, wherein each second speech segment of the second speech segments is a re-spoken version of a first speech segment of the first speech segments that has been generated by one of the speakers by repeating in spoken form the first speech segment that the one of the speakers has listened to; and processing, by the job mapper, the second speech segments to generate a complete transcript that is a textual representation corresponding to the received speech audio.