= NOW 15 WPM = TEXT IS FROM MAY 2021 QST PAGE 49 = WERE MOST NOTICEABLE WITH NO SIGNALS PRESENT, OR DURING PAUSES IN THE OTHER STATIONS TRANSMISSIONS. WITH A SIGNAL PRESENT, THE ARTIFACTS WERE MUCH WEAKER. ACCORDING TO BHI, THE DSP NOISE REDUCTION OPERATES BY IDENTIFYING WHETHER OR NOT SPEECH IS PRESENT IN THE SIGNAL. THE FILTER LEVEL ADJUSTS THE AMOUNT OF NOISE THAT PASSES THROUGH WITH THE SPEECH COMPONENTS. THE TONE REDUCTION CAPABILITIES WORKED WELL. IT TOOK THE PROCESSOR ABOUT A SECOND TO ELIMINATE A SINGLE TONE AND SLIGHTLY LONGER TO ELIMINATE TWO = END OF 15 WPM TEXT >