[linux-audio-user] ... like an old vinyl

Anahata anahata at treewind.co.uk
Thu Oct 23 03:30:48 EDT 2003

On Wed, Oct 22, 2003 at 10:14:58PM -0500, Reuben Martin wrote:
> First: Using an equalizer, kill all frequencies below ~600 and above
> ~2k. Use a graphic EQ for this. (The two values are just examples, you
> can play with both frequencies to get the desired sound you're looking
> for.)
> Second: get a recording of the inside blank track that comes after the
> last song of a noisy record. Loop this noise and mix it over top of
> the song once you've done the band pass filter from step one.
That's a bit drastic for vinyl - more like an acoustically recorded
78rpm from about 1920. Those were pressed on shellac, not vinyl.

The priciple's about the same, though - add a few random background
ticks and clicks, a bit of white noise as many vinyl discs had tape
noise from the master, possibly a bit of distortion on peaks if you want
it to sound like a worn record/stylus, and also some gentle frequency
variation at 0.5 Hz (for 33 1/3 rpm) to simulate a less-than perfect
turntable or warped record.

I'm sure it can be done with Linux tools...

anahata at treewind.co.uk       Tel: 01638 720444
http://www.treewind.co.uk    Mob: 07976 263827

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