Noise Identifier

Identify common noise and interference issues. Includes sound samples and FAQ links.

Description	Play	FAQ Links
60 Cycle Hum Replicated by exposing unshielded condenser element to AC to DC transformer.		Hum Caused by Ground Loops - Definition and Cures Hum pickup on SM87 Microphone Hum Problem
Comb Filtering Sibilant sound of “SH” between two active microphones.		Theater Audio - Comb Filter Distortion From Close Proximity Of Lavalier Mics Two MX mics on one lectern / podium
GSM Noise Cell Phone, Mobile PDA, and Wireless Devices near computer speakers.		Cell Phone, GSM, and PDA Interference - affecting other devices? How to identify MX microphones with improved resistance to GSM interference Cell Phone Frequencies / Wireless Communications Devices
Interference from Motion Detector Ticking noise injected into wireless system by a nearby motion detector.		Selection and Operation: Wireless Microphone Systems (pdf)
Music with Automixer Sustained guitar chords through SCM810 being gated.		Feedback in a church Disabling Automatic Mixing Function By Channel Submixing into an automatic mixer
PSM Dropout Musical passage experiencing multipath dropout.		PSM700 Dropouts at close range Causes of wireless system dropouts Sound dropping out of PSM400
RF Dropout Testing wireless microphone while experiencing loss of line of sight.		Causes of wireless system dropouts Choosing a wireless microphone Wireless for Health Clubs
TV Audio Interference Dropouts resulting from operating a wireless system on the audio carrier of an active analog TV station.		What television stations should I avoid for my wireless microphone? RF spectrum analyzer Causes of wireless system dropouts