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Showing results for tags 'dayton'.
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I've got a '30s small dutch livingroom with sliding doors between front and back room. The front living/listening room is only 4x3,3 meters (see picture). With Penaudio Cenya monitors I've got a bass problem at 57Hz. This matches the full standing wave at 3,3 meters. I use ffmpeg equaliser filter while transcoding with Minimstreamer on my DS116 NAS. I've done this before. It works quit well when adjustments are done by ear. This time I decided to do a good job and did a sound sweep with Dayton Audio iMM-6 measurment microphone and AudioTool. I found obvious peaks at 57Hz and 170Hz. I adjusted Q and gain until the peaks were gone. Corresponding Minimstreamer settings are: convOut={-af aresample=resampler=soxr:precision=28,equalizer=f=57:width_type=q:width=20:g=-30,equalizer=f=170:width_type=q:width=20:g=-15} (visualised in Excel see picture) This seemed to work well. I got a nice and natural graph from the sweep after adjustments. However when playing music it didn't sound natural at all. I played Kovacs. It should have a firm bass sound. After adjustments it didn't have any bass left. Same goes for Leonard Cohen. After adjustments most of his voice didn't come trough. The sound was so much off I'm sure it had nothing to do with my ears needing to adjust to the new sound. I decided to change the adjustments to half their previous settings. That sounds much better. However the peaks at 57Hz and 170Hz show again on the measurement sweep. Two years ago I had the same experience using the automatic adjustment of a Behringer DEQ2496 digital EQ. I reverted to doing my own adjustments and never just the automatic adjustment again. Strange to see/hear the difference between measurement and listening experience. Makes me wonder how dsp-manufactorers are doing this. Any one else having experience with using ffmpeg EQ transcoding?