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...s well! Especially for low speed changes, it's the best I've heard so far. For high speed increases, there is what sounds like static added to the sound output. I've attached two sound samples of high speed speech, which is a 4X speed up of a popular TTS voice in the blind community (voxin/Eloquence). I've sped up the voice with LPC in one case, and time_scale_tests in the other. Don't worry that you can't understand these speech samples - many blind people can, and I can understand it, just barely, at this speed. I guess now I need to learn about the algorithm you'...

Hi. I'm Bill Cox, and I volunteer a bit for the Vinux project, which is Linux for people with vision impairments. Most blind users use a closed-source speech synthesis tool called voxin, as it's very easy to understand at high speed. I would like to make TTS synthesizers based on large recorded vocabularies of actual speech, but to make it useful for the blind, I need to be able to speed up the speech while maintaining excellent quality. To date, I've been playing with l...

Here's one clue about whatever is causing the low quality speech. Speech sounds terrible at 1.01X faster, and it sounds excellent at normal speed (1.0X). So, the main problem is something that breaks with any change in frame size in the decoder. Any idea what that might be? Thanks, Bill On Tue, Oct 19, 2010 at 5:14 PM, Bill Cox <waywardgeek at gmail.com> wrote: > I was able to