Noise Identifier

Click play buttons to hear and identify common noise and interference issues.. Includes support links to relevant troubleshooting articles and bulletins.

60 Cycle Hum

Replicated by exposing unshielded condenser element to AC to DC transformer. Support Links - [Hum Caused by Ground Loops - Definition and Cures](https://service.shure.com/s/article/hum-caused-by-ground-loops-definition-and-cures?language=en_US®ion=en-US) - [Microphone Hum Problem](https://service.shure.com/s/article/microphone-hum-problem?language=en_US®ion=en-US)

Clipping

Demonstrated by applying too much gain to a microphone input. Support Links test - [How do I set the Gain Structure of my sound system?](https://service.shure.com/s/article/how-do-i-set-the-gain-structure-of-my-sound-system?language=en_US®ion=en-US) - [ULX-D Automatic Gain Ranging](https://service.shure.com/s/article/ulx-d-and-qlx-d-automatic-gain-ranging?language=en_US®ion=en-US) - [Understand specs for input and output clipping](https://service.shure.com/s/article/understand-specs-for-input-and-output-clipping?language=en_US®ion=en-US)

Comb Filtering

Sibilant sound of “SH” between two active microphones. Support Links - [Theater Audio - Comb Filter Distortion From Close Proximity Of Lavalier Mics](https://service.shure.com/s/article/theater-audio-comb-filter-distortion-from-close-proximity-of-lavalier-mics?language=en_US®ion=en-US) - [Two MX mics on one lectern / podium](https://service.shure.com/s/article/two-mx-gooseneck-mics-on-one-lectern-podium?language=en_US®ion=en-US)

GSM Noise

Cell Phone, Mobile PDA, and Wireless Devices near computer speakers. - [Cell Phone, GSM, and PDA Interference - affecting other devices?](https://service.shure.com/s/article/cell-phone-gsm-and-pda-interference-affecting-other-devices?language=en_US®ion=en-US) - [How to identify MX microphones with improved resistance to GSM interference](https://service.shure.com/s/article/how-to-identify-mx-microphones-with-improved-resistance-to-gsm-interference?language=en_US®ion=en-US) - [Cell Phone Frequencies / Wireless Communications Devices](https://service.shure.com/s/article/cell-phone-frequencies-wireless-communications-devices?language=en_US®ion=en-US)

Interference from Motion Detector

Ticking noise injected into wireless system by a nearby motion detector. - [Selection and Operation: Wireless Microphone Systems (PDF)](https://www.shure.com/damfiles/default/global/documents/publications/en/performance-production/selection_and_operation_of_wireless_microphone_systems_english.pdf-dd224d0e304f38854efac2103336e5cc.pdf)

Music with Automixer

Sustained guitar chords through SCM810 being gated. - [Feedback in a church](https://service.shure.com/s/article/feedback-in-a-church-system?language=en_US®ion=en-US) - [Disabling Automatic Mixing Function By Channel](https://service.shure.com/s/article/disabling-scm810-automatic-mixing-function-by-channel?language=en_US®ion=en-US)

PSM Dropout

Musical passage experiencing multipath dropout. - [PSM700 Dropouts at close range](https://service.shure.com/s/article/psm-dropouts-at-close-range?language=en_US®ion=en-US) - [Causes of wireless system dropouts](https://service.shure.com/s/article/troubleshoot-wireless-mic-dropouts?language=en_US®ion=en-US) - [Sound dropping out of PSM400](https://service.shure.com/s/article/sound-dropping-out-of-psm400?language=en_US®ion=en-US)

RF Dropout

Testing wireless microphone while experiencing loss of line of sight. - [Causes of wireless system dropouts](https://service.shure.com/s/article/troubleshoot-wireless-mic-dropouts?language=en_US®ion=en-US) - [Wireless for Health Club](https://service.shure.com/s/article/wireless-for-health-clubs?language=en_US®ion=en-US)

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?](https://service.shure.com/s/article/which-television-stations-should-i-avoid-when-using-a-wireless-microphone?language=en_US®ion=en-US) - [RF spectrum analyzer](https://service.shure.com/s/article/rf-spectrum-analyzer?language=en_US) - [Causes of wireless system dropouts](https://service.shure.com/s/article/troubleshoot-wireless-mic-dropouts?language=en_US®ion=en-US)