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| data_visualization [2015/08/26 07:51] – [Sound] ami | data_visualization [2016/01/13 17:48] (current) – external edit 127.0.0.1 |
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| E.g. environmental data values are every 10 seconds => these are timestretched to fit the audio and video which is at 24 fps. | E.g. environmental data values are every 10 seconds => these are timestretched to fit the audio and video which is at 24 fps. |
| All data are converted to txt (cvs). | All data are converted to txt (cvs). |
| Different parameters (temperature, humidity and hours of sunlight or rain, but also the frequencies and amplitudes of the soundfiles, the amount of action (bees) in the video files) will act as strange attractors in the 3D space and they will influence the behaviour of the virtual bee colony (bee-blob) in space, but also in volume or condensation. | Different parameters (temperature, humidity and hours of sunlight or rain, but also the frequencies and amplitudes of the soundfiles, the amount of action (bees) in the video files) will act as strange attractors in the 3D space and they will influence the behaviour of the virtual bee colony (bee-blob) in space. |
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| {{:sound_beehive:hive-web.jpg?300x236|}} {{:sound_beehive:hive2-web.jpg?300x236|}} | {{:sound_beehive:hive-web.jpg?300x236|}} {{:sound_beehive:hive2-web.jpg?300x236|}} |
| If you cannot solve this issue physically you should add a 50Hz comb filter patch to the software setup (a 50Hz comb filter will radically/steeply cut out 50Hz and all of its harmonics (100, 150, 200, 250, etc...))...although, when I run the files through a spectrum analyzer I only see the first harmonic (100Hz) clearly, then a much weaker 3rd (150Hz) and a slightly stronger 4th (200Hz), so it should suffice to kill 50, 100, 150 and 200, no need to go above that. (this strongly reduces it, but does not get rid of it altogether, except for the weaker 150 and 200.) | If you cannot solve this issue physically you should add a 50Hz comb filter patch to the software setup (a 50Hz comb filter will radically/steeply cut out 50Hz and all of its harmonics (100, 150, 200, 250, etc...))...although, when I run the files through a spectrum analyzer I only see the first harmonic (100Hz) clearly, then a much weaker 3rd (150Hz) and a slightly stronger 4th (200Hz), so it should suffice to kill 50, 100, 150 and 200, no need to go above that. (this strongly reduces it, but does not get rid of it altogether, except for the weaker 150 and 200.) |
| I will add screen dumps (to the upload) of the spectrum analyzer, before and after filtering...the hum are those continuous equidistant lines. I ran the the 4 files you gave me through a FFT 50Hz removal (most software has 50Hz removal presets, because it is such a common issue, though US software will have a, for us useless, 60Hz filter), getting rid of most of the hum and a hi-pass reducing everything below 70Hz, to get rid of the "city" (on one of the samples there is a sound that most likely comes from a car stereo, which is harder to get rid of.) | I will add screen dumps (to the upload) of the spectrum analyzer, before and after filtering...the hum are those continuous equidistant lines. I ran the the 4 files you gave me through a FFT 50Hz removal (most software has 50Hz removal presets, because it is such a common issue, though US software will have a, for us useless, 60Hz filter), getting rid of most of the hum and a hi-pass reducing everything below 70Hz, to get rid of the "city" (on one of the samples there is a sound that most likely comes from a car stereo, which is harder to get rid of.) |
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| {{:sound_beehive:mons-2015.jpg?800x393|audio installations with beehive recordings}} | |
| //Transformative Ecologies at Mons-2015: audio installations with beehive recordings// | |
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| {{:beehive2015:50_100_150_200hz_beforrefiltering.jpg|}} {{:beehive2015:50_100hz.jpg|}} | {{:beehive2015:50_100_150_200hz_beforrefiltering.jpg|}} {{:beehive2015:50_100hz.jpg|}} |
| //soundfiles before and after filtering// | //soundfiles before and after filtering// |
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| | {{:sound_beehive:mons-2015.jpg?800x393|audio installations with beehive recordings}} |
| | //Transformative Ecologies at Mons-2015: audio installations with beehive recordings// |
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| **Analysis & synthesis by Givan Bela: Bees along the WatchTower** | **Analysis & synthesis by Givan Bela: Bees along the WatchTower** |
| {{:sound_beehive:1-s2.0-s0003682x09002837-main.pdf|Real-time aircraft noise likeness detector}} | {{:sound_beehive:1-s2.0-s0003682x09002837-main.pdf|Real-time aircraft noise likeness detector}} |
| {{:sound_beehive:1-s2.0-s0022460x09000078-main.pdf|Real time aircraft fly-over noise discrimination}} | {{:sound_beehive:1-s2.0-s0022460x09000078-main.pdf|Real time aircraft fly-over noise discrimination}} |
| | {{:sound_beehive:canalroute.png?300x274|}} |
| | //canaroute over the rooftop garden and apiary of the Brussels Urban Bee Lab |
| | // |
| \\ | \\ |
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