Soft-db Sound Intensity Mapping Manual do Utilizador

1Sound Intensity Mapping Based on the Manual Scanning Technique2010 Annual CAA Conference13-15 October, Victoria, BCIntroductionSound intensity measu

2Limits of Existing SystemsSystems or software developed to produce sound intensity maps are expensive and inappropriate for in the field measurements

3Key ElementsPosition Tracking Method.Intensity Measure Blocks Representation.Map Construction.Position Tracking MethodThe position tracking device

4Intensity Measure RepresentationIntensity block representation is based on the Fresnel ellipse.λ/2 = r1+ r2 -r rr2r12 kHz 2 kHz ––6,4 cm6,4 cm4 kHz 4

5Computing Method – Spatial Averaging80 dB80 dB85 dB85 dB90 dB90 dB88.188.187.487.483.183.186.786.7Results – Map viewBackgroundPointsGlobalOpaque

6Spectrum Bands100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1 kHz1,25 kHz1,6 kHz2 kHz2,5 kHz3,125 kHz4 kHz5 kHz6,3 kHz8 kHz10 kHz12,5 k

7ConclusionFast mapping implementationEase of useFast resultsEasy results interpretationA sound mapping method was developed using standard