![]() At very low end analysis showed long decay time, about 1.2 seconds, but I can’t rely on this. I worked out, that in empty room sound from 500 Hz and up to the 3 kHz point takes 1 second in overall to fade out. T60 is time taken by sound to drop down by 60 dB. All of those are perfectly showing the characteristics of the room. When I finished, I took many screenshots of EDT/T60 analysis and Waterfall analysis. I did few takes, to make sure I have variety to choose from. It means fuzzmeasure will play 20 thousand frequencies in 10 seconds. From 0 to 20 kHz in particular time you set in settings. When doing room analysis using fuzzmeasure, you need to be aware of distortion, because it will add additional harmonics and completely change all your analysis.įuzzmeasure produces the frequency sweep. Then I turn up the gain a good level in diapason from -10 dB to 0 dB. It can’t close to the walls, because otherwise it will pick up too much walls reflection in one place. ![]() I put it one meter from the wall facing up. I set up the stand with the laptop and the speaker in the far corner of the empty room and I placed omni directional mic in the opposite corner. Fuzzmeasure is a software, which calculates the reverb level in the room. Then I did empty room analysis by using Fuzzmeasure. As you can see on the screenshot, my calculations are correct. I used website to check, if I’ve done my measurements and calculations right. At these points the two waves add with the same phase and reinforce each other. ![]() Midway between each pair of nodes are locations where the amplitude is maximum. They occur at intervals of half a wavelength (λ/2). At these points the two waves add with opposite phase and cancel each other out. A node is a point along a standing wave where the wave has minimum amplitude. In a standing wave the nodes are a series of locations at equally spaced intervals where the wave amplitude is zero. A square room is more problematic than a rectangular room, as having the walls the same distance apart can create strong standing waves. There are only couple of metres difference between them, so this room actually has square form, which is worst place for any action with the sound. We have two main measurements – length and width. Axial mode requires parallel surfaces, but empty room has triangle ceiling, that means in that room also will be tangential mode, but it’s not included in our assignment. In this assignment we working with the axial mode. At these frequencies this room will resonate. So in the empty room standing waves will occur at these frequencies. Then I made a list of frequencies, which occurs more than once: I multiplied the fundamental frequency by the particular number of each harmonics. ![]() Then I calculated the harmonics for each axis. So, the wavelengths and the fundamental frequencies for this room are (rounded down) : Speed of sound / wavelength = fundamental frequency The first standing wave that I find in a room is twice the length of the room : In this report I will describe all my findings, suggestions and personal opinion about work I’ve done.įor the analysis I chose the Empty Room and the Drum Booth. Recently I analysed two spaces in our college by using Fuzzmeasure software.
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