Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ.

---

[ Follow Ups ] Thread: [ Display  All  Email ] [ Vinyl Asylum ]

---

[ Alert Moderator ]

---

Viscous absorbtion

Posted by Mark Kelly (M) on December 18, 2005 at 02:54:08

In Reply to: Re: only one of us is wrong posted by HenryH on December 18, 2005 at 02:28:28:

The models assume elastic materials on both sides of the interface. In the real world there is some loss, and the standing waves (what you call resonance) increase until the loss balances the input. Expanding the model to include this viscous loss makes the whole thing much more complex.

Basically viscous loss is velocity dependent and, for a given displacement, velocity is proportional to frequency so the viscous loss increases with frequency. That's all very well and good but this frequency dependent lossiness also reduces the ability of the material to transmit vibration at the higher frequencies therefore the platter is acting as a non-linear filter. This partialy explains the common observation that application of lots of damping material makes for mushy and indistinct sound.

Mark Kelly

This post is made possible by the generous support of people like you and our sponsors:

Signature Sound

[ Signature Sound Lounge ]

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---