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an expression called the Directivity Index. The Directivity Index is the ..... Calculating the Directivity index for an n-element array is fairly difficult. ...

http://www.nadn.navy.mil/Users/physics/ejtuchol/Chapter14.pdf

The Directivity Index (DI) is a ratio of the noise level detected by the detector, ... friendly sub has a sonar with a directivity index of 15 dB and a ...

http://www.nadn.navy.mil/Users/physics/ejtuchol/Chapter9.pdf

needed to obtain the directivity index are the pressure .... Block diagram, control electronics for directivity index measuring system. ...

http://ieeexplore.ieee.org/iel6/8337/26100/01162504.pdf?arnumber=1162504

scribed by a ratio called the directivity index. The di- rectivity index of a microphone is the ... The plot of directivity index vs frequency for a 14-inch ...

http://ieeexplore.ieee.org/iel6/8335/26285/01166286.pdf?arnumber=1166286

Dr. Theo Kooij /DARPA. Dr. Shyke Goldstein /APTI. 12 March 2003 z4.02.06.1;PP (U). Beamforming and Directivity Index. In the Nonlinear Acoustic Region ...

http://www.ll.mit.edu/asap/asap_03/presentations/kooij.prn.pdf

The Directivity Index has been calculated using Gerzon' equal angle, weighted area method. 4.5. Tabulated values of Directivity index, Directivity factor, ...

http://www.medc.com/catalog/Test Reports/SUB-200T Test Report.pdf

where DI is the directivity index corresponding to the angular location of point a and DIfe is the directivity index corresponding to the angular location ...

http://users.on.net/~mjneish/acoustics australia.pdf

Directivity Index (DI), dB. Directivity Factor (Q). Directivity vs. Frequency ... Directivity Index (DI): 10 dB (+2, -1). 13 dB (+2, -3). 14 dB (+1, -5) ...

http://www.jblpro.com/pages/pub/components/21929394.pdf

by C Sevastiadis - Related articles

http://www.ceti.gr/~chamzas/chamzas_pdfs/publications/199903_microphones.pdf

4.04 Tabulated values of Directivity index, Directivity factor, Sensitivity, ... 4.05 The Directivity Index has been calculated using Gerzon' equal angle, ...

http://www.pentonuk.co.uk/technical/test-reports/1622-LS-RCS3T-June08.pdf

Directivity Index (DI): 6.9 dB (avg. 500 Hz - 16 kHz). System Sensitivity1: 94 dB SPL/1W/1m ... Directivity Factor (Q). Beamwidth. Directivity Index, Q ...

http://www.mia.dk/attachments/4636_ac28_26.pdf

Directivity Index. The Directivity Index is defined as the ... The Directivity Index is a way to compare the directional benefit of ...

http://www.knowles.com/search/pdf/an-4-issue01.pdf

Directivity Index and factor: computer synthesized from coverage. Coverage: 1/3 octave band synthesized from FFT measurements. ...

http://www.pro-audio.at/pdfs/CD18_web.pdf

Directivity Index (DI): 7.5 dB (avg. 500 Hz - 16 kHz). System Sensitivity1: 94 dB SPL/1W/ ... Directivity Index (DI), dB. Directivity Factor (Q). Beamwidth ...

http://www.soundservice.gr/jblfiles/ae ac compact/JBL_AC2895.pdf

by M Di Cola - Cited by 1

http://www.lisasystem.com/sito/pdf/rad57a86.pdf

Directivity Index (DI): An important metric with respect to directional hearing aids is the "Directivity Index," which is expressed in dB. ...

http://www.oticonusa.com/eprise/main/SiteGen/Uploads/Public/Downloads_Oticon/News_from_Oticon/NFO_Oct_05.pdf

Directivity Index (DI): 10 dB. Crossover Frequencies: 350 Hz [1.2 kHz]. Dimensions (HxWxD): 1600 mm x 762 mm x 450 mm. (63 in x 30 in x 17.75 in) ...

http://www.performanceaudio.com/media/pdf/100/18705_s.pdf

Directivity Index (DI): 10 dB. Crossover Frequencies: 350 Hz, [1.2 kHz]. Dimensions (HxWxD): 1937 mm x 762 mm x 450 mm. (76.3 in x 30 in x 17.75 in) ...

http://www.performanceaudio.com/media/pdf/100/18703_s.pdf

The total directivity performance of the MR945A can be seen in its polar patterns which exhibit a uniform dispersion angle and directivity index at ...

http://www.altecpro.com/pdfs/vintage/SpeakerAndMics/horns/MR945A HF Horn.pdf

Directivity Index (DI): 11.3 dB. Crossover Modes: Bi-amp/Passive switchable ... Directivity Factor (Q). Beamwidth. Directivity Index, Q ...

http://www.jands.co.nz/xfiles/JBL Professional/PDF Brochures - do not move/AE/AM5212-66.pdf

Directivity Index (DI): 8 dB (avg. 500 Hz - 16 kHz). System Sensitivity1: 86 dB SPL/1W/1m ... Directivity Factor (Q). Beamwidth. Directivity Index, Q ...

http://www.musiccentar.com/docs/items/2846.pdf

Directivity Factor (Q)2: 6.0. Directivity Index (DI): 7.8 dB. Nominal Impedance: 4 ohms ... Directivity Index (DI), dB. Directivity Factor (Q) ...

http://cachepe.zzounds.com/media/JBL_Ctrl1Pro-85411ae45c1b5bcd7aaac14d4cec5e18.pdf

Directivity Index Di: 10.7 dB (+1.2, -1.3 dB). 10 log R θ, (average 1.25 kHz to 16 kHz). Lowest Recommended Crossover Frequency: ...

http://archives.telex.com/archives/EV/Speakers/HP Series Horns/HP940_Horn_EDS.pdf

directivity index for directional microphone systems on a manikin. This letter is written in reference to the article entitled ...

http://www.informaworld.com/index/902855338.pdf

by M Buck - Cited by 4

http://www.commsp.ee.ic.ac.uk/~sap/iwaenc/Proceedings/2001/main/data/buck.pdf

Tabulated values of Directivity index, Directivity factor, Sensitivity, ... The Directivity Index has been calculated using Gerzon' equal angle, ...

http://www.redbackaudio.com.au/download/ndb/specifications/c/C0888.pdf

Directivity Factor. Directivity Index. Rigid boundaries force an omni-directional source to radiate sound in preferential direction ...

http://www.iitr.ac.in/outreach/web/CIRCIS/PG/NVH/Chapter 2 Environmental Noise Propagation.pdf

Table Page. 1 Planar and Volumetric Array Input Parameters for Directivity Calculations 14. 2 Directivity Index DI (dB) Calculated From planar-xz-equal.f ...

http://www.stormingmedia.us/03/0354/A035413.pdf

Directivity Index (DI): 10 dB. Maximum Peak Output1: 132 dB SPL 1m ... Directivity Index, Q ... Directivity Index (DI), dB. Directivity Factor (Q) ...

http://www.tanzhaus-zuerich.ch/technik/JBL_VP7210_95DP.pdf

Directivity index: 10. (+1.5/-2) 1.5 kHz - 15 kHz, Connectors: 2 x Speakon NL4MP, Size: (W x H x D) 195 x 365 x 206.5 mm, Weight: 7 kg, Options: ...

http://teletech.dk/eng/pdf/kling_CA106_en.pdf

Directivity Index (DI): 11 dB. Maximum Peak Output1: 134 dB SPL 1m ... Directivity Index, Q ... Directivity Index (DI), dB. Directivity Factor (Q) ...

http://www.bonstudio.gr/misc/namm/PROAUDIO/VP7212MDP spec sheet.pdf

by SC Wooha - Cited by 15

http://lib.ioa.ac.cn/ScienceDB/JASA/jasa1999/pdfs/vol_105/iss_6/3275_1.pdf

directivity index and suppress of side lobes level on the sonar range. ... Key words: directivity index of sonar antenna, idealized model of cone ...

http://intellagence.eu.com/acoustics2008/acoustics2008/cd1/data/articles/001319.pdf

30 May 2008 ... Directivity index (directional hearing). Effect of signal duration on hearing thresholds. Temporary hearing Threshold Shift (TTS) ...

http://www.noordzee.nl/upload/dossiers/Ron_Kastelein_'Effect_antropogeen_geluid_op_marine_fauna'.pdf

directivity factor and directivity index versus frequency. DISTORTION. Following AES (Audio Engineering Society) recommended practice, plots of second- and ...

http://www.osmondelectronics.com.au/pdfs/MTL-4 EDS.pdf

The directivity index (DI). DI is the same as Q factor, but expressed in a logarithmic fashion as follows: DI (in dB) = 10*log (Q) ...

http://www.doctorproaudio.com/doctor/cajondesastre/pdfs/brusi_understanding_directivity_game_numbers_doctorproaudio.pdf

system and is provided with a directivity index, which within two adjustable frequency ranges. supplements in an excellent way that of the bass system. ...

http://www.sound-link.co.uk/pdf/rl922keng.pdf

by F UNIVERSITATIS - Related articles

http://facta.junis.ni.ac.rs/walep/walep2005n/walep2005-12.pdf

Directivity Factor (Q)2: 6.0. Directivity Index (DI): 7.8 dB. Nominal Impedance: 4 ohms ... Directivity Index (DI), dB. Directivity Factor (Q) ...

http://www.audiomaster.cz/download/techpodpora/jbl/j040m.pdf

www.jblpro.com. A Harman International Company. ► VP7215/95DPC Powered 15" 2-Way Integrated Loudspeaker System. Beamwidth. Directivity Index, Q ...

http://www.grp-mc.com/jbl/pdf/vp_serie/vp7215_95DPC.pdf

Directivity Index. Improves speech intelligibility in noisy environments. Unique tones for memory, low battery, volume, etc. Automatically adjusts in noisy ...

http://www.mthearing.com/public/pdfs/CARD0067-04-EE-MT.pdf

by J CHALUPPER - Related articles

http://www.medical.siemens.com/siemens/en_GLOBAL/rg_marcom_FBAs/files/au_shi/News/TechTop_Chalupper_Rpt_SeptHR09.pdf

Directivity Index (DI): 4.5. Nominal Impedance: 4 ohms. Crossover Frequency: 3 kHz. Polarity: Positive Voltage to + terminal causes outward low ...

http://www.galax.hu/original/datasheet/installhangf/JBL Control 1 Pro - 5.pdf

Directivity Index (Dt) of a sound source when. Directivity Factor (Q) is known. .... Directivity Index and Q. Set the value for Q (17) opposite the upper ...

http://alteclansingunofficial.nlenet.net/publications/ssd.pdf

A method for computing a directivity index (DI) on a manikin for directional ... Empirical differences between the directivity index derived from the ...

http://nstl1.nstl.gov.cn/pages/2007/17/90/28(1).pdf

by A VoiceDirectivity factor, 278. Directivity index, 278. Dolph–Chebyshev filter, 47, 408. Double talk, 48. Double talk detection, 51. Downsampling, 191 ...

http://media.wiley.com/product_data/excerpt/63/04714534/0471453463-1.pdf

and directivity index (D¡) are plotted in. Figure 4. POWER HANDLING CAPACITY. To our knowledge, Electro-Voice was the first U.S. manufacturer to develop ...

http://www.noleggio-audio-luci.it/docs/FM-1502ER.pdf

Directivity Factor (Q). 5.3 averaged 1kHz to 10kHz. Directivity Index (DI). 6.6 averaged 1kHz to 10kHz. Rated Maximum SPL. Average: 105dB ...

http://www.tannoy.cz/specifications/di_range.pdf

Estimating the Directivity Index on a Manikin. Andrew B. Dittberner and Ruth A. Bentler. Objective: In this investigation, a method for com- ...

http://pdfs.journals.lww.com/ear-hearing/2007/02000/Predictive_Measures_of_Directional_Benefit_Part_1_.4.pdf

The directivity index of a loudspeaker is the difference between the on-axis response (or “listening window”) of the speaker and its sound-power. ...

http://www.harman-kardon.cz/infinity/data/infinity-prelude-forty.pdf