Andy Walls wrote: > I find audio at 8 ksps very unusual for a TV capture device. > I tried it with pulseaudio at 44100 samples/sec and with some commercial tuned in... (no big copyright problem hopefully) :-) i used this command: parec --device=alsa_input.hw_1 > blah.raw resulting raw data: http://www.wgboome.de./blah.raw > The data set contains no large positive values > (nothing in the range 0x1000-0x7fff). > Now the noise is in the positive range, 2... I made a new filter program (see appendix), that produces acceptable but still distorted sound. filter output: http://www.wgboome.de./blah.ogg > The valuex 0x10 and 0x80 do remind me of the YUV values for black: Y = > 0x10, U = 0x80, V = 0x80. Maybe some video data is getting thrown in > with the audio? > sounds good... because: the unwanted data changed its range now... -arne appendix: ... (buf[i]/256>=0x80 && buf[i]/256<0xC0) || (buf[i]/256>=0x40 && buf[i]/256<0x80)) { ... -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
