ep140 - Sony on Wireless Audio for Video: UHF, 2.4 GHz & 32-Bit Float – CineD Focus Check

This episode is a deep dive into audio for video. Markus Warlich has worked in pro audio at Sony since 1997. He demystifies the misconceptions around wireless transmission and 32-bit float: why 2.4 GHz and UHF are not solving the same problem, why some "32-bit float" systems are just a 24-bit converter blown up, why the UHF band has nearly halved since 2012 and may not survive beyond 2031 – and why, even for visual people, the audio is often more important than the picture. To our pleasant surprise, this week's episode turned into an unofficial wireless audio masterclass!

This Episode is Sponsored by Hollyland. Check it out at 11:15

► Check out the Pyro S wireless video transmitter: http://cined.co/nImvmn

► Markus Warlich on YouTube: https://www.youtube.com/c/MarkusWarlich

Chapters in this Episode:

(00:00:00) Intro: wireless audio for camera people

(00:01:08) Welcome Markus Warlich from Sony Pro Audio

(00:02:18) From PA rental to Sony Pro Audio

(00:03:20) Why every camera operator now owns a wireless kit

(00:05:38) €150 vs €5,000 wireless: which system for which job?

(00:08:35) 2.4 GHz explained: shared spectrum and why your body blocks it

(00:12:06) Line of sight, frequency hopping and those 500 m range claims

(00:16:15) Branded transmitters and the hand-held vlogging trend

(00:18:39) How many channels fit in a room: 2.4 GHz vs UHF

(00:21:48) Latency: from 40 ms down to 1.1 ms

(00:25:15) Audio quality: the microphone is your lens

(00:28:30) Licensing: why 2.4 GHz won the consumer market

(00:30:50) When 2.4 GHz makes sense and when only UHF will do

(00:32:56) Trade shows, headphones and the pressure on the sound department

(00:36:56) Onboard recording, 32-bit float and the "save" trap

(00:40:39) Sony's lineup: ECM-W5, UWP-D and DWX – who needs what

(00:43:20) Why the ECM-W5 link is three times more stable

(00:46:06) What happened to the UHF band since 2012

(00:49:00) Spectrum crunch, frequency managers and military UHF

(00:52:30) Is your old UHF kit still legal?

(00:54:40) The World Radio Conference: why camera people should care

(00:58:58) WRC-27 and 2031: is 470–694 MHz at risk?

(01:01:48) Buying UHF today: which frequency range to choose

(01:03:44) Travelling with wireless: Europe, US, Japan, China and Israel

(01:10:57) ECM-W5: 32-bit float over the air, timecode and four channels

(01:15:52) Real vs "blown-up" 32-bit float

(01:17:02) Common wireless mistakes and learning your kit under pressure

(01:20:42) What 32-bit float fixes – and what it doesn't

(01:22:55) Hiding lav mics and MZed's 86-hour Cinema Sound course

(01:25:15) Handheld mic technique, spare mics and on-camera shotguns

(01:28:51) Why audio often matters more than the picture

(01:31:48) The next big change in wireless audio

(01:34:27) Where to find Markus and outro

Related reading on CineD:

Sony DWX Gen 4 Announced: https://www.cined.com/sony-dwx-gen-4-announced-dwt-b40-bodypack-with-32-bit-float-recording-dwr-r40q-4-channel-receiver/

Sony DWX Gen 4 Detailed (IBC interview with Markus): https://www.cined.com/sony-dwx-gen-4-wireless-system-detailed-32-bit-float-recording-1-1ms-latency-and-a-30-price-cut/

Sony ECM-W5 Announced: https://www.cined.com/sony-ecm-w5-wireless-microphone-system-announced-32-bit-float-via-mi-shoe-64gb-backup-recording-timecode/

Leave us a comment, email us at [email protected], and subscribe to Focus Check on your favourite podcast platform!