Why/what am I hearing?? -> Need common sense (again!)
Posted: Wed May 07, 2014 5:44 pm
Hi y'all Audiophiles, Audioheads and VooDoo Gurus!!
Now, I am somewhat puzzled by the fact that I put a serious 60/60 (1 octave) cut at 8 kHz (= > cut affecting frequencies in the 4 kHz - 12 kHz range) just for the fun of it and it made a very big difference to what my audio sounded! Audio sounded horrible......does this suggest that although my transmitter (TS870) is incapable of passing 8 kHz I am effectively cutting "sub-harmonics" of 8 kHz, which would be 2 kHz?? Not sure if I am reading this right!! I would think that the Monitor on the 870 is pretty decent and that change would also be evident in the on-air signal?
So, I guess I am asking WHY does a cut at 8 kHz seem audibly so noticeable (or, is it that I only hear it when using the Monitor function of my TS870?) although the TX filters should not let 8 kHz through!?? Am I hearing a "cut" at a sub-harmonic of the 8 kHz center frequency which could be the aforementioned 2 kHz???
The reason for my placing a deep cut at 8 kHz was to help me get the ALC under better control (which it did not!)......
Would appreciate some clarity ;=)
Cheers!
JJ
P.S. Getting cuts/boosts more balanced (= no huge cuts nor boost) appeared to actually help with the ALC more!
Now, I am somewhat puzzled by the fact that I put a serious 60/60 (1 octave) cut at 8 kHz (= > cut affecting frequencies in the 4 kHz - 12 kHz range) just for the fun of it and it made a very big difference to what my audio sounded! Audio sounded horrible......does this suggest that although my transmitter (TS870) is incapable of passing 8 kHz I am effectively cutting "sub-harmonics" of 8 kHz, which would be 2 kHz?? Not sure if I am reading this right!! I would think that the Monitor on the 870 is pretty decent and that change would also be evident in the on-air signal?
So, I guess I am asking WHY does a cut at 8 kHz seem audibly so noticeable (or, is it that I only hear it when using the Monitor function of my TS870?) although the TX filters should not let 8 kHz through!?? Am I hearing a "cut" at a sub-harmonic of the 8 kHz center frequency which could be the aforementioned 2 kHz???
The reason for my placing a deep cut at 8 kHz was to help me get the ALC under better control (which it did not!)......
Would appreciate some clarity ;=)
Cheers!
JJ
P.S. Getting cuts/boosts more balanced (= no huge cuts nor boost) appeared to actually help with the ALC more!