Yeah, but so what? Why is this important?Like I have said later sampling rate you are taking 192000 point per second to capture at 20Hz cycle waveform.
Yeah, but so what? Why is this important?Like I have said later sampling rate you are taking 192000 point per second to capture at 20Hz cycle waveform.
I dunno what to say. When 24/192k or DSD were presented, we were assume we no longer heard different in details in 20-20kHz if we push for more sampling rate. In analogue, 16/44.1 is Retina screen in ASR while other say it is 24/192 or DSD is Retina. Retina is how many pixel points in an square inch before we can't differential the image quality, just like how many points can we push in 1 sec of sample. If you can't understand, you have to read how PCM coding works. You will see example they are using points as example. You can have many version of the same thing in google.Yeah, but so what? Why is this important?
Doesn't matter. You get exactly the same waveform. There's no "distortion". Watch the Monty video again, and really try to understand it this time.Like I have said later sampling rate you are taking 192000 point per second to capture at 20Hz cycle waveform.
It doesn't matter. You can reproduce 20 to 20KHz perfectly with 44100 samples per second. You can't make it "more perfect" by adding more samples - all you can do is extend the frequency range byond 20Khz which is a waste of effort since we cannot hear it.You can have 192,000 point to draw 20Hz sinewave instead of 44100 point. That what the Sony is talking about on the purple graph.
It's clear that you don't understand the sampling theoremIf you can't understand, you have to read how PCM coding works
If it just a simple sinewave in 20 cycle per second, no difference. If each cycle you have a sort have wave, like 20000 of square, saw waves in positive and negative per cycle. You have it in 20 different cycle per second. That is a complex harmonics in that 20 cycle per second. You need have more points to capture all the shape in those 20 cycle per second. Of course, if you can't heard the harmonics, it is just a simple sinewave 20Hz hum.Doesn't matter. You get exactly the same waveform. There's no "distortion". Watch the Monty video again, and really try to understand it this time.
I know, it exist. It state you can accurately recover a signal to sample the frequency at 2 times. That is theorem. 60hz screen refreshing rate sure be the max we can differential. However, 120hz refresh screen rate exist in gaming monitor and phone, we still can differential.It's clear that you don't understand the sampling theorem
but the harmonics to create that wave shape can only be heard if they are lower than 20KHz.If it just a simple sinewave in 20 cycle per second, no difference. If each cycle you have a sort have wave, like 20000 of square, saw waves in positive and negative per cycle. You have it in 20 different cycle per second. That is a complex harmonics in that 20 cycle per second. You need have more points to capture all the shape in those 20 cycle per second. Of course, if you can't heard the harmonics, it is just a simple sinewave 20Hz hum.
If we filter out above 20kHz harmonic in 20Hz cycle, we are altering the signal. That not what sampling theorem taught us. lolbut the harmonics to create that wave shape can only be heard if they are lower than 20KHz.
So any that are above 20Khz can be filtered out without affecting what we hear. The ones below 20KHz can be reproduced perfectly with 44.1KHz sampling. So again - more is not needed.
... indeed
Those garbages are the timbre of the 20Hz cycle. it will never the same signal. It is not a simple add and subtract stuff. lolI'm sorry, but you're wrong. Nyquist–Shannon requires a finite bandwidth.
Think about what a "stairstep" actually is. It can only exist as frequency content above the intended signal. When you filter it out, you don't lose information. You just remove garbage that doesn't belong to the original signal.
Does 440 nm blue get less blue to you if you add ultraviolet?Those garbages are the timbre of the 20Hz cycle. it will never the same signal. It is not a simple add and subtract stuff. lol
You filter it out before sampling.If we filter out above 20kHz harmonic in 20Hz cycle, we are altering the signal. That not what sampling theorem taught us. lol
It is the parts of the timbre that human hearing cannot detect. You ears are also band limited: they will also filter out anything above 20kHz (probably much lower if you are not a teenager who's never attended a rock concert).Those garbages are the timbre of the 20Hz cycle. it will never the same signal. It is not a simple add and subtract stuff. lol
If we filter out above 20kHz harmonic in 20Hz cycle, we are altering the signal. That not what sampling theorem taught us. lol
You mean the hump above 50 kHz in the screencap and the video? Yeah, that 100% looks like noise shaping. Amir also quickly explains it in the video you linked after minute 9. I don't quite understand what you refer to when talking about a limiter or high shelf - the signal in that region is definitely not intentionally added into the files.I am currently writing a paper about music streaming services and comparing them to Hi-Res audio files. I found an article about Hi-Res very informative (https://www.mobilefidelity-magazin.de/macht-den-hi-res-schwindel-sichtbar-xivero-musicscope) in German. In the meantime, I have also analyzed my files with various tools such as Musicscope. However, I have a question that is not entirely clear to me. As shown in my images and in the informative YouTube video by Audio Science Review, described at minute 9 (), I would be interested to know if this high shelf boost comes from noise shaping or from a limiter artificially boosting the upper frequency spectrum, similar to a high shelf EQ. In an article on Audio Science Review, this "high shelf" or "boost" is referred to as "noise shaping".
I have attached an image that I used from HD downloads in PCM format for my paper. I would appreciate any help so that I can describe this correctly. Best Regards Max
Hi randomear, thank you very much for the tip. I still copy and paste the address bar. That's very old school, I need to change that. I was a bit unsure because of the German article https://www.mobilefidelity-magazin.de/macht-den-hi-res-schwindel-sichtbar-xivero-musicscope. Let me translate this part:You mean the hump above 50 kHz in the screencap and the video? Yeah, that 100% looks like noise shaping. Amir also quickly explains it in the video you linked after minute 9. I don't quite understand what you refer to when talking about a limiter or high shelf - the signal in that region is definitely not intentionally added into the files.
Also, quick tip: You can link to timestamps in youtube video by pressing "Share" and then clicking the checkbox in front of "Start at [X:YY]"