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Subwoofers: Optimum Number and Locations - HARMAN International www harman com/documents/multsubs_0 pdf Get lots of output, with flat frequency response over a defined listening area Subs not localizable below 80 Hz anyway Subwoofer Optimization Goals
Subwoofer Arrays - Electro-Voice electrovoice com/media/downloads/wp_subwoofer_arrays_v04 pdf A dimension is “small” if its dimensions are less than about a third of a wavelength Here are some typical wavelengths: Frequency Frequency Wavelength (feet)
Use of complex frequency plane to design broadband and sub perso univ-lemans fr/~vromero/ewExternalFiles/2016JASA pdf 30 jui 2016 The reflection of sound of frequency below 1 kHz, by a rigid-backed structure that contains sub- wavelength resonators is studied in this
FCC ONLINE TABLE OF FREQUENCY ALLOCATIONS transition fcc gov/oet/spectrum/table/fcctable pdf 1 juil 2022 Frequencies in the 13 HF bands/sub-bands listed in the table below (HF NIB Bands) may be authorized to Federal stations in the FS
Frequency analysis of extreme sub-daily precipitation under - HESS hess copernicus org/preprints/hess-2017-247/hess-2017-247 pdf Frequency Analysis of Extreme Sub-Daily Precipitation under and to develop Intensity-Duration-Frequency (IDF) curves under stationary and non-stationary
LOAD-FREQUENCY CONTROL AND PERFORMANCE - Entso-E eepublicdownloads entsoe eu/clean-documents/pre2015/publications/entsoe/Operation_Handbook/Policy_1_Appendix 20_final pdf Under undisturbed conditions, the SYSTEM FREQUENCY must be maintained into sub-control areas that operate their own underlying SECONDARY CONTROL,
RECOMMENDATION ITU-R F 386-9 - Radio-frequency channel www itu int/dms_pubrec/itu-r/rec/f/R-REC-F 386-9-201302-IPDF-E pdf Note: This ITU-R Recommendation was approved in English under the procedure in the future, to migrate to this more efficient 28 MHz and sub-multiples