CD quality to DVD quality audio

Ito_^ SG

not much diff. oni added extra stuff in.. look at the waveforms oso can tell. oni way to encode good quality is from good quality source. u take tofu no matter how u cook oso tofu, wun turn to abalone.

True audiophiles wld understand right away.

Mr Soh SG

The Nyquist-Shannon sampling theorem showed that a sampled signal can be reproduced exactly, as long as it is sampled at a frequency greater than twice the bandwidth of the signal. Quantization, however, is not included in this theorem, and adds quantization noise, decreasing in level as the bit resolution increases. Also, in some cheaper systems, aliasing can become a problem, though this can be remedied by using steeper filters and oversampling.

M©+square SG

I give up.

Mr Soh SG

It is not much. But it produces a more 3 dimensional imaging. Some recordings can hear the difference. I tried with the recordings of AR Rahman, for some reason his the recording which stands out more than others. I do not know why, or is it because of the tools he used.

Mr Soh SG

FYI, u hav to use headphones to judge and not sepakers.

Ito_^ SG

You mean this? When sampling a band-limited signal (e.g., converting from an analog signal to digital), the sampling frequency must be greater than twice the input signal bandwidth in order to be able to reconstruct the original perfectly from the sampled version.

It means, recreating the original perfect low quality audio. Understand?

M©+square SG

Originally posted by Ito_^:

You mean this? When sampling a band-limited signal (e.g., converting from an analog signal to digital), the sampling frequency must be greater than twice the input signal bandwidth in order to be able to reconstruct the original perfectly from the sampled version.

It means, recreating the original perfect [b]low quality audio. Understand?[/b]

He don't understand one.

CD Audio______vs__________DVD Audio

Sampling Rate
41.1kHz__________________192kHz

Samples Per Second
44,100___________ _______192,000

Sampling Accuracy
16-bit_____________ __________24-bit

Number of Possible Output Levels
65,536_________ ___________16,777,216

Mr Soh SG

Yes but u do with mp3, u get back the original signal which is Cd quality witht . In case u didnt knwow, CDs have a layer on the surface which produces a silky brand new sound when u first buy it as the layer degrades over time so does the sound. But oversampling may get back that effect i guess.

Mr Soh SG

We r talking about Digital to digital manipulation, not from analog sources to digital. I provided an analogy for the tape thing

M©+square SG

I only know you go to audiophile forum. Confirm kanna flame as Noob.

Ito_^ SG

signal is signal.. i got A for my data comm modules hor. Laughing

Ito_^ SG

good. now you admit it will never be DVD quality. dats a good step, now to get u admit it will never be CD quality. Laughing

ditzy SG

If my ears are only this good, and the sound is that fantastic, how do I tell? Laughing

abao SG

i think at 192kbs 44.1Khz is oredi good enuf

i cant really tell the diff between 192 and 256kbs and the original CD

Ito_^ SG

160 for me, good nuff. the rest jiu kau hardware le.

chanff8 SG

by the way, you shouldn't be messing around with mp3, which is compressed audio format. shouldn't you be messing around with uncompressed wave files? and converting from mp3 to mp3, no matter what bitrate or quality you converting to, will still reduce the quality Rolling Eyes

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