yes, agree with the part that the analog wave can't change. But let's assume the four point data given to one is not on peaks but at different locations. You would still have difficulty drawing it.
True, but the key thing is that the samples (for digital recordings) are taken rapidly enough that they will always "sample" or taste any change or transition in the analog wave.
And whether we like it or not, the lower frequencies are getting sampled at higher rate. A 20Hz frequency is getting sampled at 2205. That's how much data is there. Now, I am not a DAC designer, so can't say if the conversion software throws out all that data and uses only 4 samples out of it. But that doesn't seem likely.
But extra information doesn't matter as to the quality of the reproduction, right? Case in point - CD and WAV files are constant sized based on length of recording. They are not any smaller because they only record bass heavy music for example.
Not sure how this matters to the discussions at hand. I am not good at digressing into other things, but seems like this is going opposite to what you said above. First you said wave can't change, meaning its continuous. Now you say its discrete and non-continuous. If its not continuous, then we should have more discrete data, no?
No, I always maintained that sound, our perception of sound, and the reproduction of sound (instruments, analog players, or digital players) are all discrete phenomena. They are a sequence of transitions - transitions of tone and volume. Nothing is stored or played back in parallel. The transitions happen so rapidly that we perceive or imagine that multiple sounds are occurring in parallel.
even if there is one groove, the groove is made with various depths. Are you trying to say that its not possible to put all the frequency data together in one groove?
Yes, but sound is only generated when the stylus transitions sequentially from one groove depth to another. Again, this happens very fast so we don't perceive it this way.
Nice write up, but I don't understand what this has to do with discussion at hand. Sound existed before digital, before analog or any electronics was invented. And eardrum may vibrate once at any given point, but it can vibrate many times over, almost 15000 times in a sec. Brain just pieces that information together for us. Same way, a speaker can produce so many frequencies, even though its vibrating once at any given time. But we hear it all together. Our eyes do the same thing. We know all this - but what does it have to do with sampling rate in digital?
I was trying to illustrate the fact that absolutely nothing in nature is truly continuous. And this is the false belief that the analog purists continue to hold. That the signal is somehow continuous and thus any discrete sampling causes loss of information. In reality, everything, sound light energy, everything, occurs in discrete pulses.
Sorry, I didn't mean to digress or to confuse. I was trying to address the underlying false notion - which is why I have said the same thing in many different ways in this thread. Now I am sure people are getting pissed off at me