Hi Markkd2lh wrote: ↑Mon Jun 08, 2020 3:43 amHi Roger, thanks for your work on Voice Prompts. All I can say is, "WOW!".
Is this a first for an amateur DMR HT? I know Motorola has it on commercial XPR7550a radios, but have not seen it on a DMR designed for ham use?
I have the American English voice loaded. Firmware at 6/3 unstable update.
The letter "T" is being pronounced as "D" by Matthew. Is this a vocoder issue?
Marc
Yes. This is partially a vocoder problem, and also a sample rate problem, as the radio operates internally at a 8kHz audio sample rate, which gives 4kHz bandwidth at the very most.
However the problems can normally be resolved by modifying the original MP3 files a little.
I noticed some problems with "T" and "G" sounding similar, and at one point I manually edited "T.mp3" to improve this, but I have a feeling my manually edited file got overwritten when I re-downloaded all the prompts again, because of some other change that I made
I need to update my Python script which downloads the synthesised speech and does all the conversion and packing etc, so that I can mark individual prompts e.g. individual letters as having a manual override so that they don't get overwritten again
See https://github.com/LibreDMR/voice-prompts/ if you want to try building the voice pack yourself, its not that hard, you only need Python 3 and FFMPEG installed.
then run the script with the "-c config.csv" in the English_USA folder and it will download all the MP3's and do the rest.
BTW. To compress to AMBE it uses the firmware in the radio, so the GD-77 must be connected via USB
Anyway.
Let me know which letters don't sound any good and I can try a few tricks to improve this.