Burris Carlyn, Vorperian Houri K, Fourakis Marios, Kent Ray D, Bolt Daniel M
J Speech Lang Hear Res. 2014 Feb;57(1):26-45. doi: 10.1044/1092-4388(2013/12-0103).
This study examines accuracy and comparability of 4 trademarked acoustic analysis software packages (AASPs): Praat, WaveSurfer, TF32, and CSL by using synthesized and natural vowels. Features of AASPs are also described.
Synthesized and natural vowels were analyzed using each of the AASP's default settings to secure 9 acoustic measures: fundamental frequency (F0), formant frequencies (F1-F4), and formant bandwidths (B1-B4). The discrepancy between the software measured values and the input values (synthesized, previously reported, and manual measurements) was used to assess comparability and accuracy. Basic AASP features are described.
Results indicate that Praat, WaveSurfer, and TF32 generate accurate and comparable F0 and F1-F4 data for synthesized vowels and adult male natural vowels. Results varied by vowel for women and children, with some serious errors. Bandwidth measurements by AASPs were highly inaccurate as compared with manual measurements and published data on formant bandwidths.
Values of F0 and F1-F4 are generally consistent and fairly accurate for adult vowels and for some child vowels using the default settings in Praat, WaveSurfer, and TF32. Manipulation of default settings yields improved output values in TF32 and CSL. Caution is recommended especially before accepting F1-F4 results for children and B1-B4 results for all speakers.
本研究通过使用合成元音和自然元音，检验4种商标声学分析软件包（AASP）：Praat、WaveSurfer、TF32和CSL的准确性和可比性。还描述了AASP的特点。
使用每个AASP的默认设置分析合成元音和自然元音，以获取9种声学测量值：基频（F0）、共振峰频率（F1 - F4）和共振峰带宽（B1 - B4）。软件测量值与输入值（合成值、先前报告的值和手动测量值）之间的差异用于评估可比性和准确性。描述了AASP的基本特征。
结果表明，Praat、WaveSurfer和TF32为合成元音和成年男性自然元音生成准确且可比的F0和F1 - F4数据。女性和儿童的结果因元音而异，存在一些严重误差。与手动测量以及已发表的共振峰带宽数据相比，AASP的带宽测量极不准确。
对于成年元音和一些儿童元音，使用Praat、WaveSurfer和TF32中的默认设置时，F0和F1 - F4的值通常是一致且相当准确的。在TF32和CSL中对默认设置进行操作可产生改进的输出值。特别是在接受儿童的F1 - F4结果和所有说话者的B1 - B4结果之前，建议谨慎。
