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hisbluness · 10th July 2009

Thank you for your input so far. As always, foxy is delivering fantastic information, although I cant claim to understand everything

But I will work it out.

I might have been not 100% clear, and I must agree its probably the impulse response I want to measure. After that I can still use FFT to see the spectrum etc etc.

The only thing Im insecure about is this: Measuring the impulse response is usually done by, well, playing an impulse, right? I thought that this bring 2 problems along:

1) Usually a bad S/N ratio compared to different methods
2) This is nothing very healthy for a speaker when done at higher levels

And I thought that measuring with an impulse is always more likely to be affected by room acoustics.

What I know about MLS is that its a better approach since its more indepented from room acoustics and that the impulse response is obtainable by using cross-corelation etc etc.

My approach, and I know I havent read enough on it yet, would be to measure with MLS and obtain the impulse response from that (ARTA can do this afaik). Using FFT will present me the spectrum view which is basically what I want.

You are invited to correct me or tell me I know nothing

Im always amazed how quick this board is and how much valuable informatin is presented within hours. This subforum, along with Mastering, is just a pleasure to read. Education all along

e.

10th July 2009	#7
hisbluness Gear maniac Joined: Sep 2006 Location: Munich Posts: 200 Thread Starter	Thank you for your input so far. As always, foxy is delivering fantastic information, although I cant claim to understand everything But I will work it out. I might have been not 100% clear, and I must agree its probably the impulse response I want to measure. After that I can still use FFT to see the spectrum etc etc. The only thing Im insecure about is this: Measuring the impulse response is usually done by, well, playing an impulse, right? I thought that this bring 2 problems along: 1) Usually a bad S/N ratio compared to different methods 2) This is nothing very healthy for a speaker when done at higher levels And I thought that measuring with an impulse is always more likely to be affected by room acoustics. What I know about MLS is that its a better approach since its more indepented from room acoustics and that the impulse response is obtainable by using cross-corelation etc etc. My approach, and I know I havent read enough on it yet, would be to measure with MLS and obtain the impulse response from that (ARTA can do this afaik). Using FFT will present me the spectrum view which is basically what I want. You are invited to correct me or tell me I know nothing Im always amazed how quick this board is and how much valuable informatin is presented within hours. This subforum, along with Mastering, is just a pleasure to read. Education all along e.