» Thu Feb 10, 2011 9:05 pm
looping the anolog pops and cracks is a good strategy, but make sure you get the levels right so it's not overbearing. Also, selectively applying some bandpass filters should do the rest. Those old recordings sound so old-timey in part because of the lack of fidelity. Just like to get the "store loudspeaker" sound from any recording, you can just cut anything over 8 kHz off and anything below ~125 hz, to simulate cheap speakers.
Just as a guess, I would apply a 7 kHz low pass filter, with full attenuation kicking in around 8k, and do a high pass filter around 100 Hz. Lastly, downsample it to mono and 22 kHz fidelity, maybe even 11 kHz.