The FM-25 includes new intelligent two-band AGC technology — or iAGC — coupled to a multiband limiter and stereo generator. The combination provides automatic, real-time program density control for a consistent, spectrally-balanced sound regardless of density variations in incoming source material.
Other features of the FM-25 include stereo enhancement and program adaptive L-R control for multipath mitigation. The composite output signal is available as traditional analog via twin rear panel BNC connectors and simultaneously as Wheatstone’s baseband192 digital multiplex technology.
The FM-25 fully supports the WheatNet-IP Intelligent Network, and is equipped with two analog composite outputs, an SCA input, balanced analog Left/Right outputs and an AES digital output which may be switched to deliver either discrete Left/Right or baseband192 digital multiplex signal. Input audio with automatic source failover may be delivered via analog, AES and WheatNet-IP.
Similar to the FM-55 audio processor, the FM-25 is smartly designed with a front panel OLED display, Guru GUI navigation and headphone jack on the front panel — as well as the incredible sound and build quality that the industry has come to expect of a Wheatstone audio processor.
The FM-25 represents a true value for the LPFM broadcaster, and can be packaged with an Audioarts Air-1, Air-4 or new 08 mixer for on-air, production and processing at an affordable price.
The FM-25 is based on our adaptive multiband iAGC — or intelligent AGC — which allow unobtrusive transitions between hyper-compressed recordings and those with more dynamic range. iAGC effectively manages the behavior of the multiband AGC as program content density changes, something a typical broadband AGC simply cannot do. By coupling the iAGC and limiter, we are able to produce a consistent, spectrally-balanced sound regardless of density variations in incoming source material.
Operating in the sum and difference domain within the multiband AGC and under the management of specialized automatic level and spectral management algorithms, the FM-25’s Smart Stereo Enhancement provides a wide but extremely stable 'on-air' stereo image. "Wide", "alive", "exciting to listen to", and "very natural sounding" are terms customers have used to describe how our stereo enhancement method sounds. Users have reported hearing artistically important nuances in music that were simply inaudible when the same material was processed by competing products.
The FM-25’s Bass Management System circumvents bass-related distortion plaguing other broadcast audio processors. The result is increased depth, feel, and clarity of bass impact without affecting mid and high frequency program -- in fact bass detail and the clarity of higher frequency audio are actually enhanced by the new algorithm.
Exclusive to the Wheatstone line of audio processors is the Stereo Multipath Limiter. A single user control assigned to this algorithm sets it to mitigate market and terrain-specific multipath behavior, reducing the annoyances of multipath-triggered receiver-induced stereo blend.
Wheatstone® baseband192 digitizes the entire multiplex spectrum including RDS and SCAs up to 67kHz, providing a higher performance interface than using the classic analog composite method between processing and transmitter. A single AES/EBU cable between the processor and a current solid-state FM transmitter carries the digital baseband signal, bypassing the need for multiplexing in the exciter and eliminating the resulting signal overshoot with its associated loudness tradeoff.
See more at: Wheatstone Audio Processing Technology Overview
WheatNet-IP I/O compatibility makes it possible to control the FM-25 and stream its audio to and from anywhere in the IP audio network, making it 100% compatible with WheatNet-IP surfaces and controllers!
Each Wheatstone broadcast audio processor comes packaged with our powerful GUI Guru software. It’s as if we sent a processing expert with each box! GUI Guru makes the tough, behind-the-scenes decisions based on the simple-to-use controls supplied for AGC, Compression, Density, Loudness, and Bass and Treble.
This equipment guide is an introduction to the various Wheatstone and Audioarts products that are ideal for the LPFM broadcast studio.
Jeff Keith, in this white paper, indicates effective measures for dealing with Multipath issues.
In this White Paper, published in the Septemnber Radio World Engineering Extra, Jeff Keith explains baseband192 technology.
How can radio stations enhance their relationships with listeners? One way is through better use of audio processing technology. Because audio processing is such a subjective topic, we asked a wide variety of individuals to contribute their views. You'll hear from 26 processing experts in this new white paper.
A white paper by Josh Gordon discussing the changing role of audio processing in the radio industry.
This brochure describes the entire line of Wheatstone's audio processing products.
This paper examines QoS, transport, protocols and other issues relevant to extending AoIP networks for sharing resources and controlling studios across a wider area network.
Shows the new products we are working on for 2016
A full-color brochure describing the BLADE-3 line of WheatNet-IP network access points.
This brochure provides overviews of the entire WheatNet-IP Intelligent Network. It includes technical details as well as acts as a catalog for all Control Surfaces, BLADES and Accessories.
Owner's manual for the FM-25 FM on-air audio processor.
A document describing configuration of the Cisco 3750G, 3560G, 3650 and 3850 ethernet switches for use with the WheatNet-IP Intelligent Network.
This is a technical manual covering all of the WheatNet-IP BLADE-3s.
This document shows simplified diagrams of the proper wiring and connections for logic I/O on WheatNet-IP BLADEs.
This document is a brief description of the logic function names used in the Wheatstone WheatNet-IP system.
IP Audio Networks: Planning for Reliability A white paper by Andrew Calvanese, VP Engineering, Wheatstone Corporation
WheatNet-IP brings added convenience and simplicity to the configuration of a PC- based automation system such as RCS Zetta. Where once it was necessary to employ a specialized sound card, discrete analog or digital audio wiring, a logic interface, and control cabling, with WheatNet-IP’s PC Driver, we can accomplish all of this over a single Ethernet cable. The driver effectively acts as a WheatNet-IP BLADE, and lets the PC enjoy full access to all aspects of the WheatNet-IP intelligent network. The driver is available in versions that offer one, four, eight, twelve, and twenty-four stereo input and output channels. For situations where discrete outputs from Zetta players are desired, we recommend at least the four-channel version of the driver.
This is a GREAT article from Pro Audio Asia...
Reprint of October 2016 article from Radio Magazine on the Hubbard broadcasting in Phoenix.
Saga Modernizes with Wheatstone by Jeff Den Adel, Engineer, Saga
Building an AoIP Network with BLADES by Amanda Hopp
IP At Center of Rogers' Console Decision by Mike McCabe, Engineerin Manager Rogers Broadcasting
A look at sending audio over IP via packets, and network considerations such as latency and jitter. A Radio World Engineering Extra by Greg Massey and Jon McClintock. Reprinted by permission.
In this ten minute video, Wheatstone engineer Mike Erickson takes you through the initial setup of the FM-55 processor from out of the box to on-the-air. These instructions also apply to the FM-55's little sister, the FM-25.
Wheatstone Processing Videos
In January 2017, Mike Erickson sat down with Scott Fybush to talk all things processing. We shot video of the conversations and got some exceptional stuff. Learn about what it takes to provide modern, airwave-dominating clean sound that listeners rave about.