Hi Scott et al., I compared the sound output from TG to an AU file provided by NIST, and sure enough, it did sound weird.
I had a closer look at the TG customization that I had done, and indeed, the whole u-Law audio compression thing was all messed up in my code. The problem is that the original was written for a Sun workstation, and it (apparently) used u-Law compression, or at least in the original TG program, it was turned on. In order to keep things the same and use the same tables, I thought I had turned on u-Law compression, but apparently I did something incorrectly. Therefore, I've now modified it to be linear, at least when compiled for non-Sun systems. So now the 100 Hz subcarrier should be 6 dB down, as I believe it is supposed to be. There are two sample files, 1 hour long each, in the ZIP archive at http://www.weiten.com/time_nuts/synthetic_wwv-like_audio.zip . Please give them a try/listen and let me know if it sounds more realistic. -- Dean Weiten Phone: (204)-888-1334 (home) (204)-771-4925 (cell) E-mail: dmw-at-weiten.com (home) _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
