Gregm...What's with this 10 KHz roll off with CDs and speakers? My disc player measures flat to the top of my spectrum analyser,20 KHz, and, before equalization, my Maggie MG1.6QR only falls off in the highest 1/6 octave band (just below 20 KHz). It is true that music, whether on LP or CD, typically has rolled-off energy above about 10 KHz.
I know that my ability to hear pure sine wave signals quits around 14KHz or so, but I can still "hear" the effect of tweeters and supertweeters much higher than this. I think this is because a music signal generally has waveforms that are as steep as a sine wave at 20KHz or higher, and the ear (at least mine) senses the steepness of the waveform.
I know that my ability to hear pure sine wave signals quits around 14KHz or so, but I can still "hear" the effect of tweeters and supertweeters much higher than this. I think this is because a music signal generally has waveforms that are as steep as a sine wave at 20KHz or higher, and the ear (at least mine) senses the steepness of the waveform.