This is a chart of FREQUENCY differences. This represents how many times a second the LASER scans said discs. The more times a second, or higher freqency, the better the sound reproduction. This is measured in HERTZ, abriviated "Hz". When you get into the THOUSANDS of Hz you call them KILOHERTZ. (1000 Hz = 1 kHz). Just like 1000 meters = 1 kilometer. So 44,000 Hz is usually labeled as 44 kHz. And inversely, 192 kHz means that the disc is scanned by the laser 192,000 times every second.
This is a CRUDE drawing of SOUNDWAVES being reconstucted from a DIGITAL source. It's kind of like trying to draw a CURVED line with an ETCH E SKETCH. The HIGHER the frequency, the SMALLER the "stair-steps" in the wave reproduction. The SMALLER the stair-steps, the MORE steps you have and the CLOSER it sounds to the original recording.
