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In Reply to: RE: Yes I can hear the difference posted by Botanico92007 on January 05, 2008 at 08:05:12
I think Botanico hits the nail on the head hear. While frequency response is often cited as the sole reason for higher sample rate audio, I also feel the higher density of the recording (sample rate) allows the wave form to be reproduced with more accuracy. While I know I can hear up to about 25khz (but barely), how do I know that the wave form being replayed is as close as possible to the way it was created in analog?
Let's go back to high school calculus (which I never mastered, but know the concepts). We are trying to reproduce a wave form. Remember calculus tries to compute the area under the curve by successive smaller and smaller approximations. This is exactly what HD audio is all about. We are sampling many more times a second to track the original wave form better. We know the more samples, the closer the recreated wave form will be to the original. See the attached link for a practical example of why high sampling rates are important.
On Friday I received three 96/24 recordings from AIX Records. Owner Mark Waldrep suggested Laurence Juber's Guitar Noir. It is an excellent recording and a good performance. You can really hear the room like you are there. The instruments sound like they are right in front of you. It sounds "live", uncompressed and open. I can crank up the volume, but not feel it is "loud".
The other disc I bought was Anita Chang, The Chopin Ballades, a solo piano piece. While I do not have the same recording in CD resolution, I pulled out a full DDD recording Cristina Ortiz performing Beethoven's Piano Sonata no 21. The recording was probably state of the art back in 1988, and it still sounds good, but it is clearly more compressed (not as much dynamic range) and the piano sounds more muffled, not as clear, not as present. Even my 12 year old daughter could tell the difference once I explained what to listen for.
I also received as a bonus, A High Resolution Audio Experience disc. It is a sampler of a bunch of different styles from the AIX library. I was most impressed by the recording of the Carl Verheyen Band, a bluesy rock piece. It just jumped out at me. Makes you wonder what modern rock recordings could sound like if producers would use and release HD audio instead of jamming everything into 16 bits and compressing the life out of it. Seems the new standard of quality is how little you can move the VU meters.
Bruce
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