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Explore How to Do Room Measurements Using REW Software with 171,055 views, 2,318 likes, and 207 comments. Experience the impact of this video content that has captured audience attention.

This is a tutorial on how to use the REW acoustic measurement program to make in-room measurements of your home theater system. This guide will teach you what you need to assemble a cost effective and highly accurate room analyzing system using your PC, free license of REW, a USB powered microphone and accessory cables. We go over the various measurement options REW offers and how to use them effectively to make accurate measurements. Download the latest version of REW here: https://www.roomeqwizard.com/ Recommended Measurement Gear and Cables: Dayton Audio UMM-6 USB Microphone: https://amzn.to/2JfIsOR BAFX SPL Meter: https://amzn.to/2GX8jti 15 foot 4K HDR HDMI Cable: https://amzn.to/2GWLllK Recommended AV Components for 5.1.4 Atmos System: Marantz SR7013 9.2CH Atmos/DTS:X AV Receiver: https://amzn.to/2GXEusz SVS 5.1 Prime Speaker System: https://amzn.to/2GWTWFa 2 pairs SVS Elevation Speakers: https://amzn.to/2LgqFtf Amazon FireStick 4K: https://amzn.to/2GX8tko For the full written review, please visit: http://www.audioholics.com Become a Patron of Audioholics: https://www.patreon.com/audioholics Follow us on: FACEBOOK https://www.facebook.com/Audioholics GOOGLE PLUS https://plus.google.com/+Audioholics TWITTER https://twitter.com/AudioholicsLive 0:00 Introduction 0:23 What is REW 0:59 Hardware needed 1:46 Microphone placement 2:16 How to setup REW 2:39 Calibration file (important!) How and why we measure ---------------- 2:52 How to measure 3:29 Smoothing (how much?) 3:57 Measuring both left and right speaker 5:06 Labeling measurements 5:38 How many measurements to take 6:14 Why we need more than one measurement 6:52 How to solve dips in the frequency response 7:35 Proper chart scaling 8:32 When to remove smoothing 8:54 What to not EQ 10:40 The Schroeder frequency 11:22 Timing reference Simulation ---------------- 12:47 Simulating room modes and SBIR 12:56 What are room modes? 13:34 What is SBIR? 15:36 Why use multiple subwoofers? 15:55 Ported vs sealed subs/speakers 17:17 What frequencies to treat and how 19:25 Why simulations are not accurate 21:23 Individual subwoofer delay 22:06 Other simulation software 22:38 Running the main speakers full-range 24:06 Sealed vs open rooms 24:37 Why placement is so critical Other measurements / wrapping up ---------------- 25:40 Impulse response 26:10 Steady-state response 26:29 RT-60 (reverberation / decay) 27:10 Waterfall plots 29:30 Distortion plots 31:24 Wavelet / Spectrogram Outro ---------------- 33:14 Summary (what equipment you need) 33:25 Summary (what we've learned in this video)

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