Sorry I never got with you on Friday about the metal work. Ended up being a crazy day for me. Let me know if this Friday might work for you.
I've heard of recordings being made by great engineers, and how choice of microphones, placement, etc can contribute to a great recording.Also I have a pristinely recorded pro pink noise disc. It covers 33 bands and has one test file at the highest level that can be cleanly recorded. It also has sweeps, etc. Recorded by two of the best audio engineers in the world. Let me know.
As I understood it pink noise was something that could be generated from a mathematical function with a random variable responsible for frequency. My assumption was any computer should be able to generate the same "quality" of pink noise as any other, but I do not know much about the details or what could contribute to errors.To Jazzi - you are correct in most of your assumptions and understanding. The purpose of having what I call a high quality recorded CD...............
I have some neo magnets on the way, should be strong and light enough not to screw with the results too much. As of now, the plan is still to use the L6SE's to excite the metal. As soon as the magnets arrive, I'll start testing things to see where we stand. I may need more speaker to get good results, I might not. I'm hoping to get the stamp that rton20s and his brother worked up sharpened tomorrow, and start cutting out both the vibration test samples, and the heat/removal/measurement samples.As I understood it pink noise was something that could be generated from a mathematical function with a random variable responsible for frequency. My assumption was any computer should be able to generate the same "quality" of pink noise as any other, but I do not know much about the details or what could contribute to errors.
So the "quality" you refer to is all about the generator I think, and that seems to make sense. So question answered, I think! Thank you for the help.
I'm happy to see this project coming along and not fizzling out!
Have you decided on a method to use your accelerometer? The last I remember reading, you were going to use speakers to excite each of your samples, is that still the plan? How do you plan to interpret the data? I've been thinking about this a bunch and have a few more ideas. I'm curious what you have come up with!