Digital Drive

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: Huge misconception regarding HDCD

Posted by J. Phelan on June 13, 2017 at 17:26:19:
Another winner -Charles should write a short book on the tech-history of digital, starting with custom filters in the late 1980s.
And HDCD was NOT the only format to fool people. So did Sony, making us think that DSD was a 1-bit system (in practice). But when we add signal processing and dither, it was 5-8 bits from the start. And this means it decimated and oversampled, (2) things we were told it would not do.
DSD was just a low-bit PCM system.
And extreme sampling rates. Whoops ! Mikes don't have sensitivities beyond 25khz, at least those used by audiophile labels.
Sony never provided recorders sampling at 192khz or beyond. (Maybe these exist now -but are rare, I think and expensive).
Even though DSD is mostly gone, we're still suffering (if we trust the theories against low-bit recording). Aren't most ADCs used today lower-bit devices ? Some labels never used these -they stood with 20-bit. But how many are there ? How many, in my view, are doing it right ?