کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
568555 1452030 2015 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mismatched distances from speakers to telephone in a forensic-voice-comparison case
ترجمه فارسی عنوان
مسافتهای ناچیز از سخنرانان به تلفن در یک مورد مقایسات قانونی و صوتی
کلمات کلیدی
مقایسه صدای قضایی، نسبت احتمال، اعتبار، قابلیت اطمینان، عدم هماهنگی فاصله، غرامت جبران ناپذیر
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی


• Illustration of methodology for implementing FVC based on conditions of a real case.
• Use of relevant data, quantitative measurements, statistical models to calculate LRs.
• Procedure for testing of validity and reliability under the conditions of the case.
• Investigation of bias due to mismatched distances of speakers to the microphone.
• Demonstration of three methods for mismatch compensation.

In a forensic-voice-comparison case, one speaker (A) was standing a short distance away from another speaker (B) who was talking on a mobile telephone. Later, speaker A moved closer to the telephone. Shortly thereafter, there was a section of speech where the identity of the speaker was in question – the prosecution claiming that it was speaker A and the defense claiming it was speaker B. All material for training a forensic-voice-comparison system could be extracted from this single recording, but there was a near-far mismatch: Training data for speaker A were mostly far, training data for speaker B were near, and the disputed speech was near. Based on the conditions of this case we demonstrate a methodology for handling forensic casework using relevant data, quantitative measurements, and statistical models to calculate likelihood ratios. A procedure is described for addressing the degree of validity and reliability of a forensic-voice-comparison system under such conditions. Using a set of development speakers we investigate the effect of mismatched distances to the microphone and demonstrate and assess three methods for compensation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Speech Communication - Volume 70, June 2015, Pages 28–41
نویسندگان
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