![]() Problem : to improve the sonics in your studio/listening environment, by "tuning" the speaker and room. ![]() This is a long read, but it may just have a really good solution to your challenge. As well as time alignment, I'd also like to be able to use the software to EQ the system to get a flatter response, and maybe in the future use it for prototyping new cab designs.I apologise ahead, as I am not the most concise of writers. I'm trying to decide at the moment whether Fuzzmeasure is sufficient for what I want to do or whether I should bite the bullet and get a copy of Smaart. I started out aligning phase by ear (invert and search for null at crossover frequency) then use Fuzzmeasure's Mixed Phase Response plot to check how well phase slopes / trace matched either side of the xover. Initially I want to do measurements to optimize the time and phase alignment of our system. I've just got a calibrated ECM8000 from Cross Spectrum, so will be using that for measurements. Responses were all most the same up to 15-16k, so it should do the job in sound system measurements. We can maybe continue a bit of topic, what measurement mic you are using? I have just a ECM8000, but I've measured the responses of it and B&K 4191 in an anechoic chamber. Please feel free to ask about fuzzmeasure or measurements in general I'll try to help how ever I can. I can suggest at least to try it before buying it.Įdited by huhts - 06 August 2010 at 10:17pm A discussion board for fuzz is also good place to ask if you have something in your mind about the software. You can automate measurements, export multiple impulse responses or write a script to handle your job. One more thing about fuzzmeasure is that you can use applescript to say what fuzzmeasure should do. Of course you can export impulse responses from fuzz and analyze them how ever you want. Thats why I use matlab for measurements if I have to collect lot of data and analyze it more carefully than fuzzmeasure can. Then it is possible to say if something is a diffraction problem or resonance problem. I prefer more 2D visualization for frequency vs time plots where you can also use different scales for axes to get a better view of what happens in time. Fuzzmeasure has a multiple plot display options where you can compare the result or display the difference between them to get a straight result for delays. ![]() Measure the cabs separately and compare the group delays near cross over frequency. I've used a group delay plots for time alignment and got pretty good results out of it. Then the fuzzmeasure has produced a fullrange sweep and does the deconvolution right and the system gets a signal what it can handle. If I have to filter the signal and I don't have dsp with me, I route the signal through soundflower to Pure Data where I filter the signal before routing it out of the converter to the system. There is something weird if you are not using a full range sweep, something goes wrong in the deconvolution algorithm and weird things happens in harmonic response. It can produce only log sweep signal but for loudspeaker measurements I think a long sweep is a good option to get good impulse response and to dig out the harmonics. I've used it quite a lot and I think that i'ts a pretty quick, handy and useful for basic measurements. Have you managed to use it for time alignment successfully? ![]() A bit off topic I know, but what do you think of Fuzzmeasure? I'm considering buying it.
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