QRQ CW PRACTICE using an iphone - uses realVNC, Raspberry PI4, Mixxx & SonoBus 'audio over ip' APP

[Chuck aa0hw]

Mixxx allows you to go back a word or two(or more) to play again, a word or phrase that you may not have copied fully Mixxx also allows you to adjust the SPEED of the QRQ CW COPY PRACTICE session - 'on the fly'

NOTE: to keep the pitch the same, no matter the MIXXX variable speed setting, ZAMGATE and a pure sine wave generator app is used for the typical CW REGENERATION setup that is used in many of this channel's Morse Code videos....basically, MIXXX triggers the sine wave generator to pass through ZAMGATE's upper port while it also adds rise/fall time according to its ATTACK & RELEASE settings....then a simple CW audio bandpass filter polishes up the CW edges into raised cosine envelopes