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<h1>̫ǹ,̫ǹַ,̫ǹ</h1> <div style="position:fixed;left:-9000px;top:-9000px;"><i id="xygmp"><center id="xygmp"><table id="xygmp"><mark id="xygmp"></mark></table></center></i><meter id="xygmp"></meter><optgroup id="xygmp"><sup id="xygmp"></sup></optgroup><nobr id="xygmp"><wbr id="xygmp"><kbd id="xygmp"><output id="xygmp"></output></kbd></wbr></nobr><ol id="xygmp"></ol><progress id="xygmp"><u id="xygmp"><form id="xygmp"></form></u></progress><tbody id="xygmp"></tbody><s id="xygmp"></s><code id="xygmp"></code><dfn id="xygmp"></dfn><address id="xygmp"><td id="xygmp"><tr id="xygmp"><cite id="xygmp"></cite></tr></td></address><tr id="xygmp"><kbd id="xygmp"><tt id="xygmp"></tt></kbd></tr><li id="xygmp"><ol id="xygmp"></ol></li><center id="xygmp"></center><label id="xygmp"><dfn id="xygmp"></dfn></label><menuitem id="xygmp"><table id="xygmp"><wbr id="xygmp"><ruby id="xygmp"></ruby></wbr></table></menuitem><menuitem id="xygmp"><table id="xygmp"><wbr id="xygmp"><ruby 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<h3><span style="font-size:16px;font-family:SimSun;">    <a target="_blank" href="http://www.commendare.com/news/110.html">专业音响人员必备知识,你都知道?</a>作为一个专业的音响人员连基本的声学知识都不?他将无法真正操作好音响设?连一些专业名词都无法理解,他不是一个合格的音响操作人员.</span><br /> <span style="font-size:16px;font-family:SimSun;">    一、声学基本知识和专业名词</span><br /> <span style="font-size:16px;font-family:SimSun;">    01、声音的产生</span><br /> <span style="font-size:16px;font-family:SimSun;">    声音是由物体振动引起空气的波?传到耳膜,经过听觉神经听到声音.</span><br /> <span style="font-size:16px;font-family:SimSun;">    声源:发生声音的振动源叫作声源.</span><br /> <span style="font-size:16px;font-family:SimSun;">    声波:由声源引起媒质的振动形成声波.</span><br /> <span style="font-size:16px;font-family:SimSun;">    声场:声波传播的空间叫作声?</span><br /> <p> <span style="font-size:16px;font-family:SimSun;">    声音在空气中是以一疏一密的纵波传播?为什么叫"纵波",因为它进行方向和传播方向一?</span> </p> <p style="text-align:center;"> <span style="font-size:16px;font-family:SimSun;"></span><img src="/uploads/image/20191107/20191107172826_2881.jpg" alt="音响" width="400" height="200" title="音响" align="" /> </p> <span style="font-size:16px;font-family:SimSun;">    02、声速与波长</span><br /> <span style="font-size:16px;font-family:SimSun;">    声波在单位时间内传播的距离称为声?常用符号"C"表示,单位是米/?M/S).一般来说声速只和传播媒质及其状态有?在标准大气压下和温度?0°C?空气中的声速为344??15°C时为340??工程计算一般取344??因为温度和湿度对声速影响比较大,温度每增?°C,声速增?英尺).如果声波在水中传?声速约?485??在海水中1500??在木材中?320??在钢材中则为5000??</span><br /> <span style="font-size:16px;font-family:SimSun;">    声速在室内声学设计和扩声技术中应用很多,一般以毫秒计算,即千分之一?1S/1000,简写MS.</span><br /> <span style="font-size:16px;font-family:SimSun;">    声波振动一周所传播的距离为波长,常用符号"λ"表示,单位是米(M).声波的波长与声速和频率的关早期反射声都控制?0MS以内,在常温下50MS所传播的距离为340M0.05=17M,要记牢这个数?它是一个界?50MS以内的早期反射声,有助于加强直达声.超过50MS的反射声会影响清晰度.如下:</span><br /> <span style="font-size:16px;font-family:SimSun;">    λ=C/ff为频?/span><br /> <span style="font-size:16px;font-family:SimSun;">    由此可见,相同条件?频率越高,波长越短.例如,常温空气?频率?0HZ声波的波长为17.20?频率?千赫的声波波长为0.0688?</span><br /> <span style="font-size:16px;font-family:SimSun;">    03、反射、折射和透射</span><br /> <span style="font-size:16px;font-family:SimSun;">    声音在传播过程中,遇到墙壁等障碍物?一部分声波在分界面处将改变传播方向返回到原来的媒质中去,而另一部分声波则以新的传播方向进入到新的媒质中?并在新的媒质中继续向前传?这种就是声波的反射和折射现象.声波的反射和折射同样满足反射和折射定?声波在室内的的多次反射是形成混响的主要原?</span><br /> <span style="font-size:16px;font-family:SimSun;">    声透射则是指声波在多层媒质中传播经历了分界面的多次折射?透过中间各层到达后一种媒质的现象.</span><br /></h3> <div class="n_article_next"><div>上一?<a href="111.html">贵阳功放与音箱配接有哪些要素?/a></div> <div>下一?<a href="109.html">贵阳汽车音响与家用音响有哪些不同?</a></div> </div> <div class="tag">相关标签?a href='/key.aspx?k=%e9%9f%b3%e5%93%8d'>音响</a>,</div> <div class="xiangguan"> <div class="xg_t">相关新闻</div> <div class="xg_news"> <ul> <li><a href="http://www.commendare.com/news/112.html">毕节会议音响设备的维护与保养?/a><span>2019-11-23</span></li> <li><a href="http://www.commendare.com/news/110.html">专业音响人员必备知识,你都知道?</a><span>2019-11-07</span></li> <li><a href="http://www.commendare.com/news/109.html">贵阳汽车音响与家用音响有哪些不同?</a><span>2019-11-01</span></li> <li><a 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