Division of Biomechanical Engineering, Department of Signals and Systems, Chalmers University of Technology, 41296 Göteborg, Sweden.
J Acoust Soc Am. 2010 Aug;128(2):751-62. doi: 10.1121/1.3458855.
The relationship between the bone conduction (BC) part and the air conduction (AC) part of one's own voice has previously not been well determined. This relation is important for hearing impaired subjects as a hearing aid affects these two parts differently and thereby changes the perception of one's own voice. A large ear-muff that minimized the occlusion effect while still attenuating AC sound was designed. During vocalization and wearing the ear muff the ear-canal sound pressure could be related to the BC component of a person's own voice while the AC component was derived from the sound pressure at the entrance of an open ear-canal. The BC relative to AC sensitivity of one's own voice was defined as the ratio between these two components related to the ear-canal sound pressure at hearing thresholds for BC and AC stimulation. The results of ten phonemes showed that the BC part of one's own voice dominated at frequencies between 1 and 2 kHz for most of the phonemes. The different phonemes gave slightly different results caused by differences during vocalization. However, similarities were seen for phonemes with comparable vocalization.
自身声音的骨导（BC）部分和气导（AC）部分之间的关系以前尚未得到很好的确定。对于听力受损的受试者来说，这种关系很重要，因为助听器会对这两部分产生不同的影响，从而改变对自身声音的感知。设计了一种大型耳罩，最大限度地减少了封闭效应，同时仍能减弱 AC 声音。在发声和佩戴耳罩时，耳道内的声压可以与个人自身声音的 BC 分量相关，而 AC 分量则来自开放耳道入口处的声压。自身声音的 BC 相对于 AC 的灵敏度定义为与耳道声压相关的这两个分量之比，用于 BC 和 AC 刺激的听力阈值。十个音素的结果表明，对于大多数音素，自身声音的 BC 部分在 1 到 2 kHz 之间的频率处占主导地位。由于发声时的差异，不同的音素产生了略有不同的结果。然而，对于具有可比发声的音素，也可以看到相似之处。
