tohenk2, you might have great hearing, and I bet a lot of people who come here once thought/still think they have better than average hearing, when it doesn't have to be the case.
But knowing that what you hear depends on a lot of things, you can't always take conclusions and blame the reason for change to some piece of equipment when your mood, bias, even placebo also take place into your perception of music.
Regarding the forgetting about >20KHz it has to do with the recording. The majority of them are recorded with a sample rate of 44.1Khz, and just in case you don't know:
BTW, i haven't rejected the possibility of you having great hearing capabilities.
But knowing that what you hear depends on a lot of things, you can't always take conclusions and blame the reason for change to some piece of equipment when your mood, bias, even placebo also take place into your perception of music.
Regarding the forgetting about >20KHz it has to do with the recording. The majority of them are recorded with a sample rate of 44.1Khz, and just in case you don't know:
Quote:
| Origins of 44.1 kHz sampling The highest frequency that a human ear can detect is approximately 20,000 Hz. The compact disc was designed with the capability to contain the full audible range, and thus overcome the limitations of previous consumer-level audio carriers. The provable Nyquist–Shannon sampling theorem states that when quantizing a signal of a given bandwidth (20 kHz in this case, 0 - 20 kHz), in order to be able to reproduce the original waveform perfectly from the digitized information, the sampling rate used in the quantization has to be more than twice the amount of bandwidth. Thus, the sample rate needed to be over 40 kHz. As real-world components do not adhere to the ideal situation behind the theorem, and CD players designed with even lower-class analogue components might not achieve desired results (producing audible distortion), the sampling rate was raised well over the ideal minimum requirement. |
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