Popfiltrer

Popfiltrer are screens placed between a microphone and the vocal source to diffuse the air bursts caused by plosive consonants such as p and b. By breaking up and slowing down the air pressure before it reaches the microphone diaphragm, they reduce popping sounds and the amount of saliva hitting the mic, leading to clearer recordings and fewer retakes.

Construction and design vary, but the most common type is a circular or oval nylon-mesh screen mounted on a flexible arm attached to the microphone stand. Some models use metal mesh or a two-layer mesh for stronger diffusion. The filter is typically positioned a few centimeters in front of the microphone, with an optimal distance often around 5 to 15 cm, depending on the mic and vocalist.

Effectiveness and limits: A popfilter effectively reduces plosives without significantly altering the overall tone of the voice. It does not cure issues with sibilance and high-frequency harshness, which are usually addressed with proper mic technique, equalization, or a de-esser. It also does not eliminate background noise; it mainly targets air blasts from speech.

Usage and context: Popfiltrer are widely used in recording studios, radio broadcasting, podcasting, and live sound setups where close-miking is common. They are a standard accessory for vocalists and spoken-word performers.

Maintenance: Clean the screen occasionally to remove moisture and debris. Replace the mesh if it becomes torn or clogged, as reduced diffusion can diminish effectiveness.