Audiotent Tip 375. Telephone Vocal Effect.
Here is a little trick to create a lo-fi vocal effect using just an equaliser.
First, insert your favourite eq. Flexible digital eq would work best for this technique.
Next, high pass the low frequencies to around 300-600Hz and Low pass the high frequencies above 4-7kHz.
This will now limit the frequency response, making the vocal thinner, more lo-fi, replicating how it would sound playing through a small telephone speaker.
Finally, add a few (2 or 3) narrow boosts (high Q value) in random frequencies from 600Hz to 4kHz. This will replicate some resonances and add even more character to the effect.
If you are looking for some processed vocal loops to get you inspired, check our latest Vocal Chops here.