On 4/26/2019 11:14 AM, Deisher, Michael wrote:
I realized that just after pressing send. The 90Hz bandwidth (I call it acoustic bandwidth since it is encoded as a PCM audio signal)
You're confusing the vibration of air with an electrical signal at audio frequencies. The word "acoustic" and the science of acoustics apply to the pressure waves in air or some other medium (like water), NOT in an electrical circuit.
The signal generated and decoded by WSJT-X, and other software, is an audio frequency signal. It takes a loudspeaker or earphones to convert that electrical signal to pressure waves that we can hear. Humans can hear these pressure waves vibrating at frequencies between about 20 Hz and 20 kHz.
73, Jim K9YC _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
