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Keith_W replied to the thread ERB spectral envelope..All of REW's smoothing options are different types of spectral envelope. Read the relevant section in the REW manual here. To... -
Keith_W replied to the thread Measuring Audio Glasses (Left Mic Freq, Mic Echo, Left Speaker Freq, THD).Please make sure you read and understand the replies before you make any more posts. 1. If you want to measure the FR of your glasses...
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Keith_W replied to the thread Measuring Audio Glasses (Left Mic Freq, Mic Echo, Left Speaker Freq, THD).You need to provide more context into what you are measuring, how you set up your measurement, whether you loaded a calibration file...
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Keith_W replied to the thread Measuring Audio Glasses (Left Mic Freq, Mic Echo, Left Speaker Freq, THD).Please refer to the REW help index and the free REW eBook (you want Book 2) for general questions about how to use REW and how to...
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Keith_W replied to the thread Measuring Audio Glasses (Left Mic Freq, Mic Echo, Left Speaker Freq, THD).This is not a trivial exercise. You will need special test equipment and the ability to dismantle the glasses to test the mic and...
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Keith_W replied to the thread Settings in Preference "Analysis".Just leave your settings the way they are. You only need to adjust the analysis settings if you are doing something pretty advanced. You...
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Keith_W replied to the thread Settings in Preference "Analysis".This page will answer all your questions.
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Keith_W replied to the thread Help Explaining SPL & Phase Graph.Please read book 2 ("REW Advanced") of the free REW guide here. In a nutshell, there are no good reasons for beginners to look at the...
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Keith_W replied to the thread Polarity anomaly - UMIK-1 vs. UMIK-2.It does not matter if your mic inverts polarity, because all measurements taken with that mic will show the same inverted polarity. At...
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Keith_W replied to the thread External Signal Mode.Would he be able to use the RTA John?
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Keith_W replied to the thread Polarity anomaly - UMIK-1 vs. UMIK-2.How to test if your mic has correct polarity or not: Step 1: Take a speaker driver and a 1.5V battery. Connect the red input to + and...
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One common cause of low end roll-offs in measurements is Windows doing noise cancellation processing on the input. Mics may have the...
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Keith_W replied to the thread Why not linear phase?.A perfect Dirac pulse is impossible since it infinitely short and its integral over time is equal to 1. However, you can approximate it...
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Keith_W replied to the thread Help: Why use a 20k Sweep for a Sub, and not just 20-80Hz?.Something has gone awry with your volume matching. If you use an SPL meter to volume match your sub to your main speakers with pink...
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Keith_W replied to the thread Crossover, speaker alignment, room equalization - what do I start with?.True pre-ringing is a reversed copy of whatever you are trying to correct occurring before the main impulse. I uploaded an example into...
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