Hello, Thanks to Sebastian's tests and reports (we ended up recording what was produced with his audio setup), I could track and find what I believe was the bug. So, can people please test libespeak-ng1 version 1.49.0+dfsg-7 which should be available within a few hours? You can use the unstable versions of espeakup (1:0.80-5) and brltty (5.4-6), do not use the experimental versions which introduce a delay which is actually spurious. I hope this time it'll be good enough for Stretch :) The technical details are in https://github.com/espeak-ng/espeak-ng/issues/172#issuecomment-274682363 Basically, espeak used to close/reopen the audio card, which espeak-ng didn't, and some drivers or cards or something else doesn't really flush data if that's not done. I have to apologize to Kirk notably, it seems that depending on audio setups there indeed was real overlapping, not only ears glitches :) Samuel _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup