Wednesday, August 22, 2012

The article I read was about audio measurement. It's something I've never really thought about in great detail mainly because I've never done it before and don't really know or understand what goes into it. I know there is a purpose behind it and a very big purpose but I don't know how to go about finding the information needed and putting it to good use. Luckily I know in the future there is a class solely dedicated to teaching me just that information. However I wanted to learn a little bit more on my own and to see what other people had to say about what they do or why they do it. Now this article is based on one specific way of getting these measurements but it's the first time I've heard of doing it this way so I decided to give it a go and learn something new. It was a pretty basic article though interesting it didn't offer a whole lot of important information. It was good information just not as much as I had hoped. Did it help me expand on my knowledge of audio measurement? Yes it did and for that I am happy to have read it. The whole concept was focused around stereo micing techniques to get the measurement data and the difference between realism and accuracy. Now you would think that realism and accuracy would go hand in hand but when it comes to live sound that's not the case. Accuracy focuses on speaker response and getting it as flat as possible and measuring for that means that that is all you are focusing on and trying to get rid of anything not related to the loudspeaker. When it comes to realism you are measuring for what the audience will hear at a very specific spot in the crowd since it will change every time you move and sometimes it will drastically change. Now obviously you can't figure out what it will sound like for every possible location in the crowd but you can do a pretty good job if you break the area down into sections and generalize the sound for those different sections. The issue lies in what you are trying to achieve because you can't have accuracy with realism and you can't have realism with accuracy so you have to decide at the beginning what it is you are going for and kind of push the other one to the side. The other focus of this article was on doing everything in stereo since that is how we hear. There were lots of different techniques that could be used. The obvious stereo micing techniques of x/y or spaced out omni's. There was also mention of using a dummy head though it's expensive for something such as a theater it would be well worth it since the response of the room isn't going to change you might as well get it as perfect as possible. I think my favorite technique mention though was just to take foam earplugs and stick a little lavalier mic in it and then put them in your ear and record your data from there. It's cheap and effective since you are a human and you're trying to reproduce the best sound for a human. Overall I enjoyed this article and the information I got out of it, I definitely think I will be doing some more digging to get more in depth details on audio measurement and all that is behind it.

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