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单元 7

The most dependable cues are those obtained by 对比 声 reaching the two 耳 指向 信息 is contained in a 对比 of the 相对 级 of 声波 falling on the two 耳

Another cue used by the 耳 to 定位 声波 源 is 底/基于 on the 时间 of arrival of sound
at the two 耳

If a 声波 arrives at one 耳 later than the other we say that there is a 相位 difference between the two 信号

In the previous 单元 we discussed 拍（音） and their 关系 to 和协 and 不和协 of 声 Those 拍（音） are 严格 a 物理 现象 发生 outside our bodies as the two 音 pull in and out of 相位

There are also so-called 双耳录音 拍（音） which are 严格 主观 or 心理物理学 These give 证据 that our 耳 do indeed perceive 相位 differences