Field Report: iZotope ANR-B
Back to normal
"Deathly quiet" is the only term I know to explain ANR-B's reduction in op amp noise. Dialog and music was untouched and the noise floor disappeared. The system is very intuitive. Not too many knobs and buttons. From left to right ANR-B has two channels that can be used for two mono sources or one stereo source. This is facilitated by the analog or AES ins and outs on XLR jacks on the back. It has RJ-45 LAN and RS-422 connections.
The link button allows the unit to be operated in stereo mode using one set of controls. Setup opens a menu on the display for accessing internal settings such as input and output type, LAN settings and firmware management. Each menu item can be scrolled through using the data wheel next to the display. The preset button opens a list of factory presets including ISDN (50Hz-8kHz) and cell phone (220Hz to 3.8kHz) filtering, along with presets for landline and music. These provide fine-tuned noise reduction and can be applied to 20 user-defined presets for different applications.
Each of the two input channels have the adapt and train buttons plus bypass and residual controls. Bypass removes the ANR-B channel from the audio chain, and holding the residual button allows for monitoring the noise being eliminated. If program material is heard on the residual output, using less suppression is necessary. Each channel has a suppression knob. Finally each channel has 10-segment input (with clip indicator), output and noise reduction meters.
It is vital to mention that noise reduction is a crafty art form. No two environments are alike, so proactively learning to experiment with the combinations available on ANR-B is important. Also remember that the system performs best when audio input levels are as strong as possible. With that in mind, iZotope's ANR-B can be the best 1RU investment installed in a problem audio chain.
Wygal is the programmer, engineer and Web designer for Liberty University in Lynchburg, VA.
Editor's note: Field Reports are an exclusive Radio magazine feature for radio broadcasters. Each report is prepared by well-qualified staff at a radio station, production facility or consulting company.
These reports are performed by the industry, for the industry. Manufacturer support is limited to providing loan equipment and to aiding the author if requested.
It is the responsibility of Radio magazine to publish the results of any device tested, positive or negative. No report should be considered an endorsement or disapproval by Radio magazine.
Acceptable Use Policy blog comments powered by Disqus
[an error occurred while processing this directive]
Today in Radio History
The history of radio broadcasting extends beyond the work of a few famous inventors.
Read each issue online in our Digital Edition Format in your Web browser.
EAS Information More on EAS
The feed provides feeds for all US states and territories.
Need a calendar for your computer desktop? Use one of ours.
Information from manufacturers and associations about industry news, products, technology and business announcements.
Staying on-air is priority #1, but 100 percent redundancy comes at a cost.
Browse Back Issues[an error occurred while processing this directive]
Also in the November Issue
- Music is Everywhere at WTMD
- FCC Looks to Update RF Exposure Rules
- Government Shutdown Causes FCC Delays
- Applied Technology: Wheatstone baseband192
- Side by Side: Video Cameras
- Exploring More from Google Earth
- The History of W9BSP