Impact of the GSM mobile phone network on the speech signal: some preliminary findings
Impact of the GSM mobile phone network on the speech signal: some preliminary findings
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DOI：
10.1558/ijsll.v15i2.193
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发表时间：
2008-01-01
影响因子：
0.4
通讯作者：
Watson, Catherine
中科院分区：
文献类型：
--
作者：
Guillemin, Bernard John;Watson, Catherine
固定电话和移动的电话网络在它们处理和处理语音信号的方式上是非常不同的，其对语音频谱以及对法医竞技场中感兴趣的声学参数的影响也是不同的。本文概述了这两个网络的主要特点，引起这些差异。然后提出了一些调查结果，显示了移动的网络对基本频率F0的影响，以及对元音前三个共振峰的影响。结果表明，虽然影响油F0不是很大，共振峰频率的影响，特别是对这些使用自动共振峰跟踪器确定的测量，可以是显着的。这些早期的发现被认为是非常重要的法医从业人员依靠声学测量的一部分，他们的调查。
The landline and mobile phone networks are very different in the manner in which they handle and process the speech signal, with consequential differences in their impact on the speech spectrum as well as on the acoustic parameters of interest in the forensic arena. This paper overviews the key features of both networks which give rise to these differences. Some findings are then presented showing the impact of the mobile network on fundamental frequency, F0, as well as oil the first three formants in vowel sounds. It is shown that though the impact oil F0 is not great, the impact on the formant frequencies, and particularly on the measurements of these determined using automated formant trackers, can be significant. These early findings are considered to be of great importance to forensic practitioners relying on acoustic measurements as part of their investigations.