All posts by Gary Stigall

October 18th Meeting: Wheatstone HD Audio Alignment and Other Tricks

Keeping your FM station’s IBOC digital audio time-aligned with your analog audio has been a source of frustration since digital was introduced. At one time, this meant manual adjustments until you could no longer perceive the difference, perhaps using a headphone with one stereo side in digital and the other in analog. Then along came separate boxes to attempt alignment, but that introduced another single point of audio failure into your system.

Wheatstone’s Mike Erickson, one of the country’s most renowned processor experts, discussed at our October 18, 2017, meeting the AirAura processor and how it addresses HD time alignment and other FM challenges with a correction input from a Belar monitor. We also discussed processing as it relates to the reduction of FM multipath.

In Chapter 36 business, we discussed the recent survey and how it related to occasional low meeting attendance. Officer elections are next month. It’s a good time to step up and try your hand at leadership positions. Contact Gary Stigall.

About Mike Erickson

Since 2010 Mike Erickson has been Wheatstone’s system and support engineer for their line of broadcast and studio processors. Before working at Wheatstone, Mike spent 15 years at CBS New York, the last 4 years as the chief engineer of WCBS FM.

KFMB-AM Restores 50 kW Nighttime Power

Making Waves – Commentary 

In case you missed it, the FCC last week dismissed KFMB-AM San Diego’s FCC application to decrease its nighttime power to 10 kW.

Say whaaaat?

KFMB-AM went from 5 kW to 50 kW nighttime power on 760 kHz in 1992 when state highway 52 was built between its towers and the station could leverage the Caltrans displacement funds to up its power. They tightened their peanut shaped antenna pattern with the third tower in order to continue to protect co-channel WJR Detroit. The lower daytime power is a rare case in the U.S. , but with KBRT Avalon short spaced at 740 kHz, KFMB wasn’t allowed to increase its daytime power past 5 kW. In most U.S. locations, stations either lower power at night or change to a directional pattern to protect the signals of stations that came before them.

Continue reading KFMB-AM Restores 50 kW Nighttime Power

July 19 Meeting at iHeart: Orban Processing

Bob Orban will teleconference in to discuss analog and digital radio audio processing, including techniques for processing bass (including subharmonic synthesis), the uses and pitfalls of de-clippers, use of multidimensional phase correction to minimize mono reception while minimizing multipath distortion, and use of parallel compression for pre-processing. He’ll also touch on loudness management of digital radio and streaming using both the BS.1770 and the Jones Torick (CBS) algorithms, with particular consideration given to the 2015 AES TD1004.1.15-10 “Recommendation for Loudness of Audio Streaming and Network File Playback” publication. Bob will show measurements assessing how effectively conventional radio-style audio processing controls loudness, and will include practical suggestions about loudness management, and will wrap up with a brief discussion of two recent Orban products for radio and streaming.

Members and guests are welcome to our monthly meeting Wednesday, July 19th at 12 noon at iHeart Media, 9660 Granite Ridge Drive in San Diego. Orban will buy pizza for the occasion. Continue reading July 19 Meeting at iHeart: Orban Processing

Wireless Microphones After the TV Spectrum Auction

SBE General Legal Counsel Chris Imlay wrote an excellent article in the June 2017 edition of Signal, the print newsletter of the Society, in which he discusses what spectrum we should expect for wireless microphones after TV stations have moved and mobile carriers like T-mobile have set-up their services. It’s not as bad you might think, but you may have to buy new mics or intercoms.

Continue reading Wireless Microphones After the TV Spectrum Auction

June Meeting: SSL, IP Audio and Their Console-less Mixer

Says George Horton of SSL:

Audio-over-IP solutions are now in regular use around the world and in a wide range of critical applications. The installed sound market has been relying on IP transport for many years already, and now many broadcasters are implementing facility-wide AoIP technologies. This presentation covers how we are have reached the current technologies and how they are evolving. We will cover the current alphabet soup of acronyms and standards and finish up with a real word example of the technology in use.

For attendees’ interest, there will also be a range of Network IO solutions and the new ‘Console without an actual console’- SSL TCR- Tempest Control rack. A solution for remote flypack productions or fully automated broadcast facilities.

Join us for our regular monthly meeting Wednesday, June 21, at 12 noon at iHeartMedia, 9660 Granite Ridge Drive in San Diego. SSL will pick up the tab for pizza. As always, everyone is invited.

About George

George Horton, Vice President Western Region, Solid State Logic. Originally hailing from Oxford England, the hometown of Sold State Logic and has been with SSL for 29 years. From building consoles to testing, servicing, installing, training and now the commercial aspects of the Western United States.

About SSL

From groundbreaking audio consoles to innovative software and hardware solutions, Solid State Logic has evolved to become the world’s leading manufacturer of analog and digital audio consoles and provider of creative tools for Broadcast, Music, Film and Live Sound professionals.

With more than 3000 SSL-equipped studios and facilities operational today, the excellence of SSL consoles is universally recognized for unrivaled sonic quality, superb ergonomics, outstanding automation and an international support infrastructure second to none.