Articles
The Transistion in Audio Monitoring
Shane Toven As signal chains have become increasingly complex, the challenges involved in managing and monitoring these paths have multiplied exponentially. Over the past few decades, we've migrated from handling a single channel of content using composite video and analog audio pairs, to elaborate multi-channel facilities routing HD video with embedded audio over SDI or in many cases discrete AES pairs. These audio signals are often a mix of 5.1 and stereo programs and in many cases encoded to or decoded from Dolby at some point in the chain.
Tags: iss122 | aes | ebu r128 | atsc a85 | aes67 | Shane Toven
Submitted by Shane Toven Read this article in the tv-bay digital magazine
Remote Production
Jim Green Ten years ago,remote production was the stuff of dreams,a glimpse into a brave new world. The prospect of providing real-time audio control of live events thousands of miles away,without even leaving the studio,was as enticing as it was unlikely.
Tags: iss113 | Calrec | Latency | Control | infrastructure | IFB | DSP | AES67 | Ravenna | Dante | SMPTE 2022 | Jim Green
Submitted by Jim Green Read this article in the tv-bay digital magazine
Audio
Pieter Schillebeeckx Audio monitoring has come a long way since its humble beginnings of a box with a speaker, a volume control and an analogue input. Today's high-end audio monitoring units boast an impressive array of I/O such as SDI, MADI, AES-3 and Analogue while offering a large amount of functionality such as accurate metering, loudness measurement, Dolby decoding, metadata analysis and video confidence monitoring. There is however a huge storm brewing in the world of broadcast in the form of video and audio over IP, which will turn everything upside down.
Tags: iss113 | Audio | Audio Monitoring | SDI | MADI | AES-3 | S2022-6 | TR-03 | TR-04 | IP | AES67 | Dante | Ravenna | 3G-SDI | TSL | MADI | PAM-IP | Pieter Schillebeeckx
Submitted by Pieter Schillebeeckx Read this article in the tv-bay digital magazine
The importance of maintaining digital audio paths
Larry Schindel A portable, handheld, digital audio stream analyzer/generator is an essential piece of test equipment in the broadcast environment. It allows engineers and system integrators to quickly monitor and verify the composition, and integrity of, audio signals at any point from production all the way through the distribution chain.
Tags: iss111 | linear acoustic | dolby | aes3 | mt2000 | dvb-asi | toslink | smpte 337 | Larry Schindel
Submitted by Larry Schindel Read this article in the tv-bay digital magazine
Working With Audio Signals
N/A For most of the past century, working with audio signals was a very straightforward process. The audio information was converted to electrical signals in the form of a varying voltage between the two conductors in a pair (balanced) or between a conductor and the ground reference (unbalanced). The bandwidth, frequency response, distortion and noise requirements of audio circuits were all well-defined. Interconnecting audio equipment was a simple matter of matching impedance and levels, usually accomplished with simple circuits of passive devices.
Tags: utah scientific | iss053 | audio signals | aes | ebu | N/A
Submitted by N/A Read this article in the tv-bay digital magazine
Its a MADI World
N/A At this years NAB Show in Las Vegas, 3D solutions were still a hot topic but one emerging technology threatened to steal the show. In fact, the rapid growth of devices that support the Multichannel Audio Digital Interface (MADI) has more potential for simplifying broadcasting operations than perhaps anything else. But what exactly is MADI and why should we care?
Tags: iss053 | nab2011 | 3d | wohler | audio distribution | madi-8 | audio monitor | madi | aes | ebu | audio | N/A
Submitted by N/A Read this article in the tv-bay digital magazine
TSL PAM1-3G8 Review
N/A This unit from TSL has been in use by us for nearly a year. Its small and sleek and certainly looks professional, as you would expect from TSL.
Tags: tsl | review | pam1-3g8 | ob | iss052 | embedded aes | dolby e | N/A
Submitted by N/A Read this article in the tv-bay digital magazine
Modern Test Techniques for Digital Audio Broadcast Systems
N/A The move to digital systems in broadcast audio means that engineers and systems integrators have had to evolve new means of testing equipment. Simon Woollard, Applications Engineer for audio test and measurement manufacturer Prism Sound, discusses some of the issues faced by todays broadcast engineers.
Tags: audio | iss039 | test equipment | aes | prismsound | multi-tone testing | jitter | bit activity | N/A
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