Wideband audio recordings of gunshots: waveforms and repeatability
نویسنده
چکیده
For the purposes of audio forensics research we have obtained multi-channel acoustical recordings of gunshots under controlled conditions for several firearms. The recordings are made using an elevated platform and an elevated spatial array of microphones to provide quasi-anechoic directional recordings of the muzzle blast. The consistency and repeatability of gunshot sounds are relevant to many areas of forensic analysis. This paper includes a description of the recording process and a summary comparison of the acoustical waveforms obtained from ten successive shots from the same firearm by an experienced marksman. Practical examples and applications are presented.
منابع مشابه
Acoustical Characterization of Gunshots
This paper addresses several practical and theoretical issues encountered in the analysis of gunshot audio recordings. Gunshot recordings have the potential for both tactical detection and forensic evaluation. Such recordings can provide information about speed and trajectory of the projectile, the estimated location of the shooter, and in some cases the type of firearm and ammunition used. How...
متن کاملAcoustical modeling of gunshots including directional information and reflections
Audio recordings of gunshots exhibit acoustical properties that depend upon the geometry and acoustical characteristics of nearby reflecting surfaces and the relative orientation of the firearm with respect to the recording microphone. Prior empirical studies have demonstrated the basic principles of gunshot recordings near the firearm and near the target. This paper describes an experiment to ...
متن کاملDeciphering Gunshot Recordings
Audio gunshot recordings can be helpful for crime scene reconstruction, estimation of the shooter's location and orientation, and verification of eyewitness accounts. The audio evidence can include the muzzle blast, the shock wave signature if the projectile is traveling at supersonic speed, and possibly even the characteristic sound of the firearm's mechanical action if the recording is obtain...
متن کاملSupport Vector Machine Classification of Gunshots
Crime scene investigation involves a forensic analysis of the information available with the goal of determining the innocence or guilt of a suspect. Sometimes, this information can be physical, chemical, visual, or aural. In particular, crimes where audio evidence is available faces investigators with the problem of determining a reasonable sequence of events that explain the audio data. In th...
متن کاملDoppler velocimetry of normal human fetal venous intrapulmonary branches.
OBJECTIVES To describe the nature of flow velocity waveforms from fetal middle and distal venous pulmonary branches in the second half of normal pregnancy in relation to gestation, and to test repeatability and interrelationships of flow velocity waveform recordings from proximal, middle and distal venous pulmonary branches. DESIGN Cross-sectional study. SUBJECTS/METHODS A total of 111 norm...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016