Page 16 of Triano Technical Guide by Hearing Planet

2 cc coupler ansi s3.22-1996 directivity index db 7 6 measurement on kemar 5 4 3 10 db triano sp tm directional characteristics static 0° 500 hz 1 khz 2 khz with hearing instrument 2 1 0 -1 -2 -3 0.125 0.25 0.5 without hearing instrument 270° 90° measured on kemar 180° left side 1 1.6 2 2.5 f 4 khz 8 directivity data ­ measurement on kemar ai-di articulation index ai weighted directivity di 3.8 db 10.0 db 4.6 db front-side ratio average data at 90° and 270° front-rear ratio average data at 180°

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