[78-L] Record Noises - Identify and Understand Cause

[neechevoneeznayou at gmail.com]

On 1/12/2014 7:53 PM, beststuff4u at frontiernet.net wrote:

> Hiss, Wear, Pop, Crackle, Click, and Clipping

Here's what the words mean to me.

Hiss - typically low level broadband noise. Used to be called "air". The 
word "hiss" sounds like hiss.

A click is a smaller event and typically there are lots of them in rapid 
succession. Clicks tend to be higher freqs. Maybe above 3000 Hz. Clicks 
can be created by static electricity discharges.

Pop - to me a pop is a relatively large transient event. Pops may be 
wider bandwidth. Can be caused by record damage or debris on the surface.

Crackle - I think of crackle as midrange clicks, below 3500 Hz. Fairly 
steady, hopefully low level, sometimes caused by impurities in pressing 
material.

Clipping happens in the digital domain, I would think you are not going 
to have this if you are making the transfers properly.

Wear - never heard this term used other than a general description of a 
record's condition. I have never heard of a "wear filter" in any 
program. AFAIK wear is a conglomeration of faults.

I'm sure others on the list will have something to say about this.

Joe Salerno