2 ccm coupler prisma 2 ite 123/55 0 20 40 100 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range prisma 2 ite tm lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 g max li 50 db lo max li 90 db g g 70 db 60 50 40 30 20 10 0 kemar max insertion gain 80 db 70 60 50 40 30 20 10 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 0.125 0.25 0.5 1 2 f 3 4 khz 8 1 1.6 2 2.5 f 4 khz 8 prisma 2 ite 118/50 0 20 40 lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 100 g max li 50 db lo max li 90 db g g 70 db 60 50 40 30 20 10 0 kemar max insertion gain 80 db 70 60 50 40 30 20 10 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 0.125 0.25 0.5 1 2 f 3 4 khz 8 1 1.6 2 2.5 f 4 khz 8
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directional microphone system directional characterisitic 0° prisma 2 ite directional tm lo 500 hz 1 khz 2 khz frequency response from front and side 110 db 100 90 80 0° lo frequency response with noise from front and rear 120 db 130 100 90 0° 180° 270° 90° 70 10 db 90° rtg li 60 db measured in free field on 2 ccm coupler 80 70 60 50 rtg li 60 db measured in free field on 2 ccm coupler 60 50 measured on kemar 180° right ear 40 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 db 7 6 5 4 3 2 1 0 -1 -2 -3 directivity index measured on kemar directional effect in numbers notes ai di articulation index ai weighted directivity index di front-side ratio 5.3 db all data obtained in the frequency range 250 hz 5 khz front-side ratio average data at 90° and 270° front-rear ratio average data at 180° with hearing instrument 10 db front-rear ratio without hearing instrument 7 db measured on kemar the measurements were achieved with prisma 2 ite 118/50 0.125 0.25 0.5 1
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2 cc coupler prisma 2 hs/itc 118/45 0 20 40 100 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range lo max prisma 2 hs/itc tm lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 lo max g li 90 db 80 db 70 60 50 lo kemar max insertion gain 60 db 50 40 30 20 10 0 -10 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 li 50 db 40 30 20 10 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 1 2 f 3 4 khz 8 prisma 2 hs/itc 113/40 0 20 40 lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 100 lo max g lo kemar max insertion gain 60 db 50 40 30 20 10 0 -10 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 80 db 70 60 50 li 90 db 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range lo max li 50 db 40 30 20 10 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 1 2 f 3 4 khz 8
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2 cc coupler prisma 2 hs/itc 118/45 0 20 40 100 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range g max li 50 db prisma 2 hs/itc directional tm lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 lo max li 90 db g 60 db 50 40 30 20 10 0 -10 kemar max insertion gain 80 db 70 60 50 40 30 20 10 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 0.125 0.25 0.5 1 2 f 3 4 khz 8 1 1.6 2 2.5 f 4 khz 8 prisma 2 hs/itc 113/40 0 20 40 lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 100 lo max li 90 db g 60 db 50 40 30 20 10 0 -10 kemar max insertion gain 80 db 70 60 50 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range g max li 50 db 40 30 20 10 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 0.125 0.25 0.5 1 2 f 3 4 khz 8 1 1.6 2 2.5 f 4 khz 8
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directional microphone system directional characterisitics 0° prisma 2 hs/itc directional tm g 500 hz 1 khz 2 khz 100 db 90 80 70 frequency response with noise from front and side g 100 db 90 80 frequency response with noise from front and rear 0° 70 90° 0° 180° 270° 90° 60 10 db 60 50 40 30 4 khz 8 0.125 0.25 0.5 rtg li 60 db measured in free field on 2 ccm coupler 50 40 measured on kemar 180° 30 0.125 0.25 0.5 rtg li 60 db measured in free field on 2 ccm coupler 1 1.6 2 2.5 f 1 1.6 2 2.5 f 4 khz 8 db 6 5 4 3 2 1 0 -1 -2 -3 -4 directivity index measured on kemar directional effect in numbers notes ai di articulation index ai weighted directivity index di front-side ratio 4.9 db all data obtained in the frequency range 250 hz 5 khz front-side ratio average data at 90° and 270° front-rear ratio average data at 180° with hearing instrument 9 db front-rear ratio without hearing instrument 8 db measured on kemar the measurements were achieved with prisma 2 hs/itc 118/45 0.125 0.25 0.5
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2 cc coupler prisma 2 mc 113/40 0 20 40 100 60 80 hearing loss 100 db 120 0.125 0.5 90 80 70 main fitting range g max li 50 db prisma 2 mc tm lo iec 118-7/ansi s3.22 1996 saturation sound pressure level/ospl 90 gain/full-on gain 130 db 120 110 lo max li 90 db g g 60 db 50 40 30 20 10 0 -10 kemar max insertion gain 80 db 70 60 50 40 30 20 10 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 0.125 0.25 0.5 1 2 f 3 4 khz 8 1 1.6 2 2.5 f 4 khz 8
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2 cc coupler iec 118-7/ansi s3.22-1996 effect of the agc lo prisma 2 ite tm effect of ck control 130 db 120 110 100 90 80 70 30 lo off ck 60 ck 48 effect of cr control 130 db 120 off lo output limiter effect of ck control 130 db 120 110 100 110 100 90 80 70 cr 1.3 cr 1.5 cr 2.0 cr 3.0 gmax f 2 khz ck 36 db off -3 -6 -9 -12 -15 -18 -21 90 80 70 30 gmax f 2 khz ck 36 gmax -20 db f 2 khz cr 3:1 40 50 60 70 ll 80 90 100 60 30 40 50 60 70 ll 80 90 100 40 50 60 70 ll 80 90 100 dynamic compression characteristic type output limiter channel-agc agc-o syllabic compression dual compression speech sensitive processing microphone noise reduction quick slow attack time 4 ms 5 ms 3 ms 500 ms 7s 2 ms release time 80 ms 80 ms 30 ms 5 sec 1s 50 ms
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2 cc coupler iec 118-7/ansi s3.22-1996 effect of high cut 130 db 120 110 100 90 80 70 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8 g2 off g3 off g4 off fog prisma 2 ite tm lo lo 130 db 120 110 100 90 80 effect of low cut g1 off g2 off g3 off fog 70 60 0.125 0.25 0.5 1 1.6 2 2.5 f 4 khz 8
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fitting parameters parameter adjustable in program output limiter mode threshold feedback manager optimize adaptive mode gain master gain m 1 2 t 1 2 off m-t-o switch program button prisma 2 ite tm · x · · xxxx hard limiting broadband-agc-o multi-channel agc-o 0 -3 -6 -9 -12 -15 -18 -21 db · · · · · · · · on off incl open loop gain measurement on off · · · · max gain reduction in 3 db steps channel gain · · x x 1 max 1.5 db steps 2 max 1.5 db steps 3 max 1.5 db steps 4 max 1.5 db steps channel-agc crossover frequency compression threshold ck compression ratio cr dynamic characteristics · · x x · · · · · · xxxxxx 36 42 48 54 60 66 72 off 1.0 1.3 1.5 1.7 2.0 2.4 2.8 3.0 syllabic compression dual compression 400 565 hz 36 42 48 54 60 66 72 off 1.0 1.3 1.5 1.7 2.0 2.4 2.8 3.0 syllabic compression dual compression 800 1600 1130 3200 hz 36 42 48 54 60 66 72 off 1.0 1.3 1.5 1.7 2.0 2.4 2.8 3.0 syllabic compression dual compression 2000 2500 3200 hz 36 42 48 54 6
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fitting parameters noise reduction vad/ssp microphone selection microphone program selection beep tone beep tone frequency t-parameters sensitivity nh/corner frequency nl/corner frequency input selection low battery beep power-on-delay · x · x m 1 2 · x · · · · x · xxxt 1 2 x x · · off m-t-o switch program button off min mid max on off omnidirectional directional prisma 2 ite tm off on off 125 250 500 750 1000 x x · x · x · x t · xxxx 33db stufen 00 db steps off 800 900 1010 1130 1270 1420 1600 1790 2010 2250 2530 2840 3180 3570 4000 2000 2140 2280 2430 2600 2770 2960 3160 3380 3600 3850 4110 4390 4680 5000 off mt mt off on off on · free selection possible test setting x setting with program 1 voice activity detection/speech sensitive processing
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siemens hearing instruments inc locations united states headquarters/northeast manufacturing facility p.o box 1397 piscataway nj 08855-1397 · 732 562-6600 or 800 766-4500 midwest manufacturing facility/professional products 847 808-1200 or 800 333-9083 south manufacturing facility 770 422-4540 or 800 922-9998 west manufacturing facility 714 670-8216 or 800 998-9787 technical support for software and systems 888 231-1333 siemens hearing instruments a division of siemens canada limited 320 pinebush road cambridge ontario canada n3c 2v3 · 519 622-5200 or 800 663-0620 www.siemens-hearing.com/pro information in this brochure subject to change without notice © 2002 siemens hearing instruments inc all rights reserved 03727422 12/02 3.0 22k711 5k shi/05618-3
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