In typical stereo encoders, overshoots in the program material result in over-modulation in the stereo generation process. With the continued proliferation of audio delivered digitally using satellites or the internet, overshoots are common place, especially when bit reduction codecs are used – which typically can change the waveform amplitude by up to 3dB or more. Tightly controlled audio levels are no longer peak controlled by the time they eminate out at the FM transmitter end of the digital link – which means unless the transmitter or stereo generator has some way of handling the overshoots, over-modulation will occur, resulting in the need to reduce peak levels with the resulting loss of loudness and signal to noise.
Advanced stereo generation for digital delivered audio
Some stereo generators have brute force clippers on the inputs of the generator to deal with this, often audibly, generating clipping distortion, or audible ducking of the audio. Other generators may use composite clippers, with the resulting ‘mush’ that infects the spectral purity of the broadcast.
6 Digital Signal Procesing chips inside the DSPmpX provide unprecedented peak control and reference grade stereo generation. With typically over 70dB of stereo separation and very tight linear phase 15Khz brickwall filtering, your radio stations composite signal will be exceptionally clean, both in terms of audio quality, and in spectral content, ensuring you do not cause interference, or increase levels of multi-path.
Inaudible amplitude and bandwidth control
The DSPmpX borrows techniques from the $10,000 flagship broadcast audio processors and integrates the following into an extremely simple to setup product.
- Reference grade stereo generator
- Composite clipper
- Pilot protection filter
- SCA / RDS filter
- Linear phase overshoot compensated brickwall 15 Khz filters.
- Distortion controlled audio clipping and limiting system
In front of the stereo generation system is a highly advanced DSP audio subsystem with the sole job of preventing the stereo encoder from being over-driven (unless you turn up the composite clipper control). This system contains an overshoot compensated distortion control clipping system with dynamic limiting feedback mechanism. In layman’s terms, this translates to an extremely low distortion gain control mechanism that is free from pumping and ducking. The carefully tuned system kicks a fast limiter into play when there is excessive amounts of audible distortion being generated by over-driving the clippers. The result is a system that is audibly transparent for typical overshoot levels generated by digital links. When the system is over-driven the system will do it’s best to reduce audible distortion, while switching off all dynamic limiting and clipping otherwise.
The combination of program dependent limiting and clipping, overshoot control, stereo generation, composite clipping and filtering provides an extremely effective tool to radio stations who may want to feed a network of transmitters over satellite, or maybe just a community radio broadcaster who wants to process audio at the studio and use audio over IP to send their audio to a remote hill top transmitter site.
Oh….. One last thing – the DSPmpX has a built in silence detector that can switch between its analogue or digital (AES / EBU) audio inputs or vice versa. Perfect if your internet or satellite feed fails where you can play audio from back up device - keeping you on the air.
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Another first for BW Broadcast; this year we will be show casing our products in Brazil. Continuing to expand our presence in the South American Market, we are working with key partners in the region to bring the BW Broadcast technology to a whole new host of broadcast and audio professionals.
One of our newly appointed dealers; Planeta Do Radio, have organised their own event Engetec 2014. With support from technical and radio professionals and engineers, they are able to host this event at the Hotel Boulevard in the City of Londrina, PR from 21st – 23rd November.
ENGETEC PDR is an initiative with the objective of bringing professionals in Brazil information on installation, operation and maintenance of broadcasting equipment and they will be highlighting BW Broadcast products.
Planeta Do Radio will be show casing our range of processors, most noticeably the Ariane Sequel Audio Leveler, which has proved very popular with increased sales over the last couple of months.
The Ariane Audio Leveler is like no other audio processor in the world. It is the cost effective and easy way to breath new life into your existing processor by tightly controlling audio levels whilst not affecting the tonality of the source. It can be used for pre-processing Radio or TV Program Audio to get more controlled but open On-Air signal and is perfect for recording, nightclubs, PA Systems, production and broadcast studios and studio-transmitter links. It also works really well as a leveler for webcasting, streaming and IBOC to create a more even and listenable sound.
We are happy to announce that BW Broadcast will be represented at Africast 2014 by our developing dealer DM Broadcast. The event is being held in the Sheraton Abuja Hotel in Abuja, Nigeria between 21st-23rd October.
This year is the 10th edition of the Afro-centric biennial conference of Africa Broadcasters. Introduced by the National Broadcasting Commission; the broadcast regulator in Nigeria, Africast is the new gateway to Africa’s Broadcast Market. It is a conference platform on which broadcast issues as they relate to Africa are thrashed out every 2 years by professionals, academics and policy makers. It is also a mini market for manufacturers of broadcast equipment and content who are targeting the emerging African market.
At the exhibition we will have the DSPXtra-FM Audio Processor and the award winning RBRX1 FM Receiver. Both of these products have been doing well in the African markets because of their extensive list of features and benefits that are complemented by their great price.
We will be showcasing these products to hundreds of buyers, meeting new customers, develop personal and direct relationships with our customers as well as providing hands-on exposure and live demonstrations of our products.
Be part of this huge event that connects providers, distributors, and marketers of broadcast content and equipment and register today!
As the dust settles on another IBC, the hangovers have cleared and it’s back to business. We had a really successful show, picking up more awards for our Encore Range of products.
Neal Helly, Sales Representative for BW Broadcast had this to say: “IBC was a great opportunity to meet so many of our customers and Broadcasting friends within Europe and even some from further afield this year. It was also the first time our new Encore Range has been exhibited in Europe and the reaction was tremendous. Not only did the range win two awards, it was evident from our customers reaction that these products were going to take their stations to the next level! In summary, IBC was a great show for all concerned with BW Broadcast this year and we are already looking forward to returning to Amsterdam again next year!”
VERTUS ENCORE – FM/AM TRANSLATOR
The Vertus Encore, a ground-breaking ‘single box’ translator, (which already won best of show at NAB earlier this year) won another best of show at Amsterdam.
The Vertus Encore AM/FM translator combines the ground breaking features from our Encore transmitter range with the world’s BEST re-broadcast receiver. No one else can offer a solution for translator sites that can rival Vertus’ sound quality, reliability and ease of use – all in one economical box!
Pulls in distant stations and re-broadcasts them with amazing clarity!
- Use it to translate AM to FM as well as FM to FM.
- Save money, this ‘one box solution’ includes integrated processing, RDS & telemetry.
- Reduce stress, simplifying your broadcast chain and end compatibility problems.
- DSP processing AM to FM rebroadcast for unprecedented AM sound enhancement.
- Designed for the translator market with all the features you’ll ever need.
- Quick-change parts make onsite maintenance a breeze!
- Diagnostic logging, emails alerts & audio back-up give you total peace of mind.
TX ENCORE – FM TRANSMITTER
The Encore Transmitter was also awarded ‘Best of Show’. Building on the incredibly popular award winning V2 range of transmitters BW Broadcast have added even more features to make it the most reliable transmitter on the market.
Our New Encore FM Transmitters integrate the vital elements you need to build a successful radio station. Integrated audio processing, RDS and telemetry ensure you will sound fantastic, save money on additional equipment and have less stress managing equipment and no compatibility issues. Set-up is so simple and intuitive, the OLED screen tells you everything you need to know – you’ll be on the air 5 minutes after taking it out of the box! Available from 5 to 3000 watts.
Ensure you stay on air.
Now you can change parts and avert disaster without breaking a sweat!
- Slide-in power supplies
- Gold clamp ‘quick change’ transistors
- Audio back-up.
No nasty surprises.
You’ll be so ‘well informed’ an issue will never become a problem.
- Telemetry system compatible
- Advanced diagnostic logging
- Remote control app – make vital adjustments from anywhere.
Your ‘one box’ broadcast solution – Encore saves you money, rack space & hassle!
Find out where you can see live demonstrations of BW Broadcast products at our next exhibition.
or contact your Local Dealer for demos and best prices!
You can also contact our Sales Team directly.