If you do more than a small amount of audio recording you will eventually run into the problem of the “popping p’s” and the hissing of sibilent s sounds. A pop screen is the perfect solution, but the expense of a pop screens may be hard to justify in a time of shrinking budgets.
Jake Ludington posted a brilliant little “how-to” article on building a custom pop screen for under $10 USD! It’s amazingly simple, and worth the read.
