Mixing digitized speech and text using reliability indices

A method of processing a mixed-media data stream, comprising:

• reading a mixed-media data stream comprising a text component and a digitized speech component, the text component comprising text segments identified in the mixed-media data stream as doubtful and the digitized speech component comprising digitized speech corresponding to the text segments identified as doubtful;
• converting the text not identified as doubtful to synthetic speech;
• and
• generating an audio waveform from the mixed-media data stream by combining the digitized speech and the synthetic speech.

Apparatus comprising a computer-readable storage medium tangibly embodying program instructions for presenting information in spoken form, the program instructions including instructions operable for causing a programmable processor to:

• read a mixed-media data stream comprising a text component and a digitized speech component, the text component comprising text segments identified in the mixed-media data stream as doubtful and the digitized speech component comprising digitized speech corresponding to the text segments identified as doubtful;
• convert the text not identified as doubtful to synthetic speech;
• and
• generate an audio waveform from the mixed-media data stream by combining the digitized speech and the synthetic speech.