What Morse Code Audio Tones sound like using the Adaptive Multi-Rate Wideband (AMR-WB) audio codec

Описание

using a SIP ECHO TEST...

FLdigi sends CW TONES to the input of the local dekstop MicroSIP CLIENT - the MicroSIP CLIENT connects to a SIP TEST SERVER which receives the FLdigi CW TONES and the SIP ECHO TEST server bounces that FLdigi signal back to the desktop SIP CLIENT so you can hear what your own signal sounds like over this CODEC
Adaptive Multi-Rate Wideband (AMR-WB)
https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_Wideband

SIP CLIENT USED= MicroSIP
https://www.microsip.org/downloads

NOTE: SCOPE VIEW

GREEN WAVE on top = the original unfiltered RECEIVE audio from the SIP SERVER

RED WAVE on bottom = post filtered RECEIVE audio after going through a typical cw audio bandpass filter(just enough "q" to remove the "hissing" sound on the cw note edges)