Workflows, equipment, and technology breakthroughs. Discover who is using 4K/8K and why. Understand the theory and practical significance of providing more pixels, higher frame rates, and bigger and better color space.
In this new series John Watkinson looks at all aspects of microphones, including how they work and how they don’t work.
There is a school of thought that suggests increasing the brightness through the contrast control on a television will give a higher dynamic range. However, this doesn’t necessarily increase the contrast ratio. Quantization noise is the enemy of dynamic range and increasing brightness in a system with a low bit depth makes quantizing banding obvious. When banding occurs, the brightness must be turned down to remove it or, the bit depth should be increased.
HDR is taking the broadcasting world by storm. The combination of a greater dynamic range and wider color gamut is delivering images that truly bring the immersive experience to home viewers. Vibrant colors and detailed specular highlights build a kind of realism into broadcast productions that our predecessors could only ever have dreamed of.
Telco fixed access networks are “the last mile” to homes and commercial buildings. They play a key role in the delivery of OTT Video, and are undergoing big changes to support its growth. Telco fixed access networks were originally built in the 19th century to deliver telegraph services, evolving during the 20th century into telephone services. Today they provide vital telecommunications services supporting all aspects of a nation’s life including government, business, education and entertainment. Companies in this sector include the likes of British Telecom, Telecom Italia and AT&T. Over the last 30 years, the voice-first PSTN network has evolved to support data services over broadband, and today telco’s are deploying new data-first access networks.
We’ve heard the hype, and I admit I’ve contributed my fair share. The iPhone is able to capture impressively sharp, high-resolution images that stand up to critical examination even when magnified and viewed on a 20-meter cinema screen. The iPhone’s onboard software compensates for the most egregious image defects, applying on-the-fly color correction, noise reduction, and broad optical compensation that eliminates chromatic aberrations, barrel distortion, and a host of other things, from what is, after all, an exceedingly modest lens.
Gain control in digital audio is essentially a numerical model of the same process in the analog domain.
In this article, George Kroon, research broadcast engineer, takes a look at how Negative ARQ protocols similar to those used for internet streaming and contribution can be improved specifically for broadcast television.
The year 2020 was a big milestone for the broadcast industry. All major events were cancelled, but media operations still needed to produce shows and events even during the crisis. More than ever, broadcasters turned to the remote production and IP production; in fact, according to Omdia, 37% of media enterprises are now set to embrace remote production on IP.