Audio forensic gunshot recordings may come from telephone conversations and land mobile radio traffic recorded at an emergency call center, electronic news gathering activities, surveillance recordings, etc. As an increasing number of law enforcement officers carry digital voice recorders to help document their interactions with citizens and suspects, it has become common for audio forensic examiners to encounter gunshot evidence from voice recorders. Because these off-the-shelf devices incorporate microphones, electronics, and digital coding algorithms intended to capture intelligible human speech and not gunfire, the examiner must consider the strengths and weaknesses of the portable digital voice recorder when interpreting forensic audio gunshot evidence.
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