Wow and flutter: what is it, and how to measure it using WFGUI?

📼 In the world of analog audio, the irregular movement of tape, record or film causes speed fluctuation, which in turn, causes pitch fluctuation. Relatively slow changes in pitch are called wow, faster changes are called flutter. This video explains how to measure wow & flutter using either a hardware or a software meter, and what do the numbers mean. See a more in-depth written version for more information: https://reflectiveobserver.medium.com... Download WFGUI here: http://www.ant-audio.co.uk/index.php?... --- Chapters: 00:00 - Intro 00:46 - Tape speed, different methods to measure wow & flutter, formulas 03:56 - Wow & flutter measurement with standalone meters and with WFGUI for Windows This video uses portions from: BlankFor_ms | TUTORIAL Tape Warble, Wow & Flutter |    • TUTORIAL Tape Warble, Wow & Flutter   The LED Artist | Vinyl Strobe LED Outshines Built-in LED |    • Vinyl Strobe LED Outshines Built-in LED   N.H. Crowhurst | The Effects of Wow, Flutter, and Rumble | http://www.vias.org/crowhurstba/crowh... Pioneer Electronics | Tuning Fork magazine | No4, 1980 Amalgamated Wireless Ltd. | the instruction manual to A248 wow and flutter meter Vladimir Kraz | Electromagnetic Compliance: a view from the field | https://incompliancemag.com/article/e... AudioCraft2013 | Wow & flutter chart