The presence of noise is a salient cue to the perception of breathiness and aspiration in speech sounds. The detection of noise within harmonic series (maskers) composed of unresolved components was found to depend on the fundamental frequency (f_o) and the overall level of the masker [Gockel, Moore, and Patterson (2002). J. Acoust. Soc. Am., 111 (6), 2759–2770]. In the present study, noise detection thresholds were measured as a function of the frequency range, the f_o, and the overall level of harmonic maskers. Frequency range was specified in equivalent rectangular bandwidth (ERB) units (3–13, 13–23, 23–33, or 3–33 ERBs). The results were consistent with the idea that listeners rely on spectral cues when maskers comprise only resolved components (3–13 ERBs), and on temporal (dip listening) cues when maskers contain only unresolved components (23–33 ERBs). Noise detection thresholds were generally lower when masker level was high (70 dBA) than when it was low (50 dBA). Masker f_o affected thresholds only when listeners relied on spectral cues for noise detection. With the wideband (3–33 ERBs) masker, listeners likely detected noise by focusing on the frequency band (23–33 ERBs) with the most advantageous noise-to-harmonic ratio.

中文翻译：

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谐波串联掩蔽器中的噪声阈值

噪声的出现是语音中呼吸和吸入感的明显提示。发现由未知分量组成的谐波系列（掩蔽器）中的噪声检测取决于基频（f _o）和掩蔽器的整体水平[Gockel，Moore和Patterson（2002）。J. Acoust。Soc。Am。，111（6），2759-2770]。在本研究中，噪声检测阈值，测量作为频率范围的函数，所述˚F _Ò，以及谐波掩蔽器的整体水平。频率范围以等效矩形带宽（ERB）单位（3–13、13–23、23–33或3–33 ERB）指定。结果与这样的想法是一致的，即当掩蔽者仅包含已解析的分量（3–13 ERB）时，监听者依赖频谱提示；而当掩蔽者仅包含未解析的分量（23–33 ERB）时，监听者则依赖于时间（浸入监听）提示。掩蔽器电平高时（70 dBA），其噪声检测阈值通常比低电平时（50 dBA）低。掩蔽˚F _ø只有当听众依赖于噪声检测频谱线索受影响的阈值。使用宽带（3–33 ERB）掩蔽器，听众可能会通过关注具有最佳噪声噪声比的频带（23–33 ERB）来检测噪声。