Hi all,
I worked a bit on Navit config file for QTMoko, I though this may be helful for some users. I was a bit bored of the poor sound quality at the start of each announcement due to the sound card waking up just as the speech starts. So I tried to include a sound file before each announcement to give enough time for the card to prepare before the speech (as explained here <http://wiki.navit-project.org/index.php/Speech>). However this was not exactly useful because each sound file was suffering from the exact same problem, so the speech was still degraded. Therefore I decided to merge the two wav files into a third one so that the sound would not be interrupted as the two are being played. Here are the steps I followed (let me know if you have a better way to do it). First of all I installed sox and its dependancies: apt-get install sox then I changed the config file ~/.Navit/navit.xml to redirect speech commands into an external file at line 742 (I got this from the Navit website): <speech type="cmdline" data="/media/card/Navit/speech.sh %s" cps="10" /> I created the folder /media/card/Navit that contains the file Sound.wav (whatever you like as long as it is mono and 22050 Hz sample rate, I used a 1.5s bleep-ish sound) and the script speech.sh that follows: #!/bin/bash/ espeak -ven-uk+m1 -s 140 -a 100 -p 50 "$1" -w ./speech.wav sox -r 22050 -e signed-integer -b 16 -v 1.5 ./Sound.wav ./tmp1.raw sox -r 22050 -e signed-integer -b 16 ./speech.wav ./tmp2.raw cat ./tmp1.raw ./tmp2.raw > ./tmp3.raw sox -r 22050 -e signed-integer -b 16 ./tmp3.raw -r 22050 -e signed-integer -b 16 ./playing.wav aplay -r 22050 ./playing.wav make it executable: chmod +x /media/card/Navit/speech.sh Then you can try the result by typing something like: /media/card/Navit/speech.sh 'this is a test' the result is quite nice, the sound is a bit scratchy at the beginning of the sound file due to the wake up problem but the speech is now completely clear. All the best,
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