To make modern audio sound like it’s coming from a 1940s console, you need to strip away the "fullness" of the sound:
Old radios had limited frequency ranges. Use an EQ plugin to cut out the deep bass and very high treble. A good starting point is a High Pass filter around 600Hz and a Low Pass filter around 3.5kHz . Old Radio Sound Effects
Apply gentle compression to even out the levels, mimicking the way old broadcast hardware processed audio. 3. Quick Software Shortcuts To make modern audio sound like it’s coming
Add a small amount of "grit" or "warmth" using tape emulation or a distortion plugin. Apply gentle compression to even out the levels,
If you need immediate "foley" (performed sounds) or background noise, look for these specific elements:
Use the "Scientific Filter" and select a curve that emphasizes the mid-range frequencies.
If you're recording a radio play and want to make your own sounds, try these: How to Assemble a Basic Radio Play Sound Effects Kit