Old Radio Sound Effects -

To make modern audio sound like it’s coming from a 1940s console, you need to strip away the "fullness" of the sound:

Look for "old radio switch" or "antique tube radio" being turned on. Old Radio Sound Effects

Add a small amount of "grit" or "warmth" using tape emulation or a distortion plugin. To make modern audio sound like it’s coming

Use the "Scientific Filter" and select a curve that emphasizes the mid-range frequencies. Old Radio Sound Effects

Sites like Envato Elements or Zapsplat offer extensive libraries of royalty-free radio effects. 2. How to "Old-ify" Your Voice