Talk:Analog-to-digital converter

message: This part should talk about the difference between sample rate and resolution regarding music recording and playback.
Sample rate will increase the bandwith of the recording and nowadays 44kHz is too low. Theorist might call Nyquist theorem to the discussion, saying the normal person can't hear above 15-17kHz and that 44kHz is enough. The problem is that sound waves are produced mechanically by a speaker and if you simply dont send the hi-frequencies, it will vibrate differently, changing the sound. BTW, DVD is 96kHz. 
BTW, there is a musical producer that has detected a 95kHz frequency. The guys knew something was bad with his equipment, called in the tech guys, they didnt believe he could hear that high (experts usually hear 20kHz-22kHz) and made a series of test to see if the guy was really feeling it, and HE WAS!
Regarding resolution, 16bits are insufficient for today's standarts. Not only regarding the low SNR, but also regarding the depth, the dynamics of the music. Simply put, between 16bits and 20 or 24 bits, YOU WILL NOTICE the difference, even if you are not an expert. Once again, DVD quality is 24bits.
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My two cents: we should isolate this discussion in another article, about psychoacoustics. This article would list scientific references about sound perception.  I do know one or two articles about high and low frequency perception.   Signal quantization is something, hearing quantized signals is another thing.
Now, I don't know what you mean when you say that DVD has 24bits and 96kHz. DVDs are MPEG2 streams, and not raw signals like CDs!!...
AFAIK, sampling rates and bit depths larger than 44100/16 are only required when the signals are going to be digitally processed. But this means "in consumer applications"... The real limits of human perception is a current area of research, an open question. -- nwerneck, 01 Dec 2005 20:25:49 -0200
: The music perception is a highly controversial topic and not related to the ADC itself. So the question if the current CD audio standard is sufficient should not be part of the ADC article. If at all this would be a point with the CD standard or digital music part, but even there the controversial part is better avoided. 2A04:1C40:34C9:0:2139:39FF:F647:CF90 (talk) 20:03, 17 June 2022 (UTC)
thread_title:  Regarding musical application 

message: The aliasing section says the following:
"The frequency of the aliased signal is the difference between the signal frequency and the sampling rate. For example, a 2 kHz sine wave being sampled at 1.5 kHz would be reconstructed as a 500 Hz sine wave. This problem is called aliasing."
This is a gross misrepresenation of the topic. It mentions sampling, but omits reconstruction. It fails to take into account spectral folding and image bands, and egregiously it fails to mention that *all* frequencies on the frequency axis fold into the band 0 - fs/2.
Please, someone with the knowledge, expertise, and time, rewrite this section, and any other parts similarly afflicted!  — Preceding unsigned comment added by 63.230.166.220 (talk) 20:50, 28 June 2012 (UTC)
replies: text: I don't see a problem with this example. Reconstruction does not come into play here because the error occurs during sampling. ~Kvng (talk) 18:22, 31 January 2019 (UTC)
thread_title:  Aliasing misrepresented 

message: In  there is a claim that all ADCs have linearity issues. A 1-bit delta-sigma converter is designed to address this. I'm sure there are some residual non-linearities in supporting circuits but the core process is fundamentally linear. Should we soften this claim? In reviewing articles like this I've found a pattern of WP:NPOV issues from editors who can't seem to believe it is possible for digital systems to represent an analog signal accurately. ~Kvng (talk) 18:11, 31 January 2019 (UTC)
thread_title:  Nonlinearity