CN2268288Y - 学生听课用定向音量增效器 - Google Patents

学生听课用定向音量增效器 Download PDF

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Publication number
CN2268288Y
CN2268288Y CN 96205522 CN96205522U CN2268288Y CN 2268288 Y CN2268288 Y CN 2268288Y CN 96205522 CN96205522 CN 96205522 CN 96205522 U CN96205522 U CN 96205522U CN 2268288 Y CN2268288 Y CN 2268288Y
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China
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ears
sound
artificial
ear
utility
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Expired - Fee Related
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CN 96205522
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戴津生
宋广智
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Individual
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Individual
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Priority to CN 96205522 priority Critical patent/CN2268288Y/zh
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Abstract

一种学生听课用有定向功能的音量增效器,它是用塑料制成的两只大于人耳的人工“耳”,两“耳”之间以相同的材料呈弧形连接。使用时戴在头上,两人工“耳”恰好紧贴于人耳后面并向前呈150°角,来自前方的声音被反射传入人耳内,利用声反射原理,使音量增大。

Description

学生听课用定向音量增效器
本实用新型涉及一种音量增效装置,尤其是一种学生听课用有定向功能的音量增效装置。
目前已有的音量增效装置是由电子装置构成的助听器,用来供听力较差人员扩音用,由于此类装置对环境中所有的声音都加以放大,不具备定向选择功能,因而不适用于学生听课用。
本实用新型的目的是提供一种利用声反射原理,有定向选择功能且结构非常简单的音量增效装置,供学生听课用。
本实用新型的目的是这样实现的:它是用塑料制成的两只大于人耳的人工“耳”,两“耳”之间以相同的材料呈弧形连接,外形极相似于头戴式耳机。使用时戴在头上,两人工“耳”恰好紧贴两耳后面向前呈150°角,来自前方教师讲课的声音一部分传入人耳内,还有一些传到人工“耳”上经反射也传入耳朵内,使声音增大。科学实验表明:反射的回声到达人耳比原声晚0.1秒以上时,人耳能将回声与原声区分开,如果小于0.1秒回声和原声混在一起使原声加强。本实用新型的人工“耳”紧贴人耳后,反射声音的时间显然小于0.1秒,因而使用本实用新型不会有声音失真的感觉。另外由于两人工“耳”朝向音源呈特定的角度,从而也减小了反向角度内的噪声对学生的干扰,加强了定向增音的效果。
由于采用上述方案,利用声现象的一般原理,实现了定向增音且不需要任何能源,结构非常简单。
下面结合附图和实施例对本实用新型作进一步说明:
图1是本实用新型的主视图
图2是本实用新型的俯视图
图3是本实用新型的使用示意图
图中1人工“耳”2.连接部分
在图1中,两人工“耳”(1)和连接部分(2)是用塑料一次模压成型,外形极相似于头戴耳机。为使连接部分(2)坚固耐用且有弹性,在连接部分(2)内附一根有弹性的钢条(3)两人工”耳”(1)的大小为高10~11厘米,宽6~7厘米。
在图2中,两人工“耳”朝前呈150°使用时如图3所示戴在头上,两人工“耳”(1)恰好紧贴于人耳后面,以便将前方定向传来的声音反射传入人耳内,达到定向增音的目的。为适应各种头型配戴,本装置可按常规尺寸多生产几种规格。

Claims (3)

1.一种学生听课用有定向功能的音量增效器,其特征是:用塑料制成的两只大于人耳的人工“耳”之间以相同的材料呈弧形连接。
2.根据权利要求1所述的装置,其特征是:两人工“耳”的大小为高10~11厘米,宽6~7厘米。
3.根据权利要求1所述的装置,其特征是:两人工“耳”向前呈150°角。
CN 96205522 1996-02-11 1996-02-11 学生听课用定向音量增效器 Expired - Fee Related CN2268288Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 96205522 CN2268288Y (zh) 1996-02-11 1996-02-11 学生听课用定向音量增效器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 96205522 CN2268288Y (zh) 1996-02-11 1996-02-11 学生听课用定向音量增效器

Publications (1)

Publication Number Publication Date
CN2268288Y true CN2268288Y (zh) 1997-11-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 96205522 Expired - Fee Related CN2268288Y (zh) 1996-02-11 1996-02-11 学生听课用定向音量增效器

Country Status (1)

Country Link
CN (1) CN2268288Y (zh)

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