通常，当它们游泳时，会发出咔嚓的声音，所产生的声波会在回声中被反射回到它们身边。
Usually, as they swim, they make clicking noises, and the resulting sound waves are reflected in an echo and travel back to them.
让我们来谈谈声谱的另一端，人类听不到的声音——超声波。
Let's talk about the other end of the acoustical spectrum, sound that is too high for humans to hear—ultrasound.
它的工作原理是分析传入声音的声波并产生新一轮向外扩散的声波。
It functions by analyzing the waves of the incoming sound and creating a second set of outgoing waves.
我们知道大脑某个区域会处理耳朵接收到的声波，那在想象声音的时候也是这块区域在起作用吗？
We know which brain regions handle sound waves that come in through your ears. Are the same areas active when you simply imagine the sound?
关于这些细胞如何将声波转换为神经信号也就是我们所说的“声音”的研究几乎没有，Heller说。
Little is known about how these cells transform acoustic waves into neural signals that we interpret as sound, Heller said.
他们解决了声波是怎样在数百万计的碰撞中产生的，并将其声音放大1018倍使人耳可以听得见。
They worked out how sound waves would react between the millions of collisions and then multiplied the noise by roughly 10 billion billion to make them audible to humans.
优先权效果(或者“第一声波靠前定律”)是我们的大脑基于第一声波位置在相互冲突的各种信号中判定声音位置的能力。
The precedence effect (or "law of first wave front") is our brain's ability to determine the location of sounds amidst conflicting signals based on the direction of the first waves of sound.
臂带上的声波检测器带有五个压电悬臂，每一个可以检测某个特定频段的声音。
The acoustic detector in the armband contains five piezoelectric cantilevers, each weighted to respond to certain bands of sound frequencies.
研究人员用100分贝的声波去冲击夹着纳米线的两个电极，这种音量还没有摇滚音乐会的声音那么大。
The researchers blasted that sandwich with sound waves, which at 100 decibels were not quite as loud as a rock concert.
这就是为什么我们能在一个充满各个方向回声声波的房间中辨认声音位置的原因。
This is why we are still able to localize sounds in an echoey room where reflecting sound waves come from different directions.
手机的震动能够被手部皮肤感知，手机铃声也要靠产生声波—声音的震动，然后引起鼓膜震动，我们才能听到铃声。
A cellphone set to vibrate can be sensed by the skin of the hand, and the phone's ringtone generates sound waves - vibrations of air - that move the eardrum.
庞贝表明正确的超声波信号产生的各种声音都可以听见。
The correct ultrasound signal, Pompei suggests, can produce any kind of audible sound.
之后他们压缩减压能产生声波的这种气体。数据表示部分冷凝物的速度超过声速，因此他们制出了声音的黑洞边界。
Their data showed that the speed of part of the condensate exceeded the speed of sound, and they had therefore made an acoustic event horizon.
手机的震动能够被手部皮肤感知，手机铃声也要靠产生声波—声音的震动，然后引起鼓膜震动，我们才能听到铃声。
A cellphone set to vibrate can be sensed by the skin of the hand, and the phone's ringtone generates sound waves -vibrations of air -that move the eardrum.
除了我们人类能听得见的吱吱声，老鼠还发出超声波——这种声音的分贝很高，人耳无法听到。
In addition to audible squeaks, mice produce ultrasonic noises-squeaks so high that humans cannot hear them.
是的,从某种程度上来说是那样,但我在想的是这个理论,最低的声音,发出最长的声波,而且持续的最久
Yes, to some extent it is that, yes, but what I was thinking about here is this idea that the lowest sounds create the longest sound waves, and they last the longest.
长程音波设备(声弹)，简称为LRAD，发出声波的声音足够大以至于可以刺痛人并造成不可弥补的损害，这种设备可以用于阻止海盗。
Long range acoustic devices, or LRADs, emit sound waves loud enough to cause pain and permanent damage that could be directed towards the pirates.
检测水压承受力的金属嘎吱作响、发出哀嚎；声纳(声波定位仪)发出的声音常常刚刚达到张力的最大值。
Metal tested to endurance creaks and groans; a sonar pings just often enough to maximise the tension.
Herzing博士认为很多信息可能都被编码成这类声音，包括海豚的一些人类听不到的超声波。
Herzing believes that much information may be encoded in these sounds, as well as in dolphins' ultra-high frequencies, which humans cannot hear.
声纳(声波定位仪)发出的声音常常刚刚达到张力的最大值。
播放声音播放的短促声波的时间，以毫秒表示。
胎儿听到的最响的声音可能是做超声波检查时的声音。
The loudest sound of a fetus will ever hear may come during an ultrasound scan.
这同样使声波能量降低，随之带来音调和音高的降低，使得我们自己听到的声音远低于周围人直接听到的声音。
This too causes the waveform to lose energy as well as, in turn, frequency and pitch, resulting in you hearing a distorted, lower tone than what people hear directly from out of your mouth.
声音和音频技术涉及的主要是声波的处理。
Sound methodology and audio techniques engage in processing these sound waves.
超声波技术是根据高频率的声音感应来测量的。
Ultrasonic technology is based on high-frequency sensors to measure the sound.
处于危险情况下的小老鼠能发出人类听不到的超声波，母老鼠在远处也能听到这些声音，然后它就赶快跑回来保护自己的孩子。
Young mice in danger can make ultrasonic sounds that the human ear cannot detect. The mother mouse can hear these sounds from a distance. Then she hurries back to protect her babies.
三星智能电视的脠“音量增大”功能可以通过增强高频声波来进一步提高声音的清晰度。
Thee Amplify function of Samsung Smart TV can enhance high-frequency sounds to further improve sound clarity.
在小尺度封闭空间内，声波低频成分的波长与空间尺寸相当，声音在传播过程中所发生的散射、衍射等波动现象不容忽视。
Because of wavelength of sound at low frequencies being close to the dimensions of small enclosures, scattering and diffraction in the course of sound radiation can not be ignored.
声波纹一种电子记录下来的图纹，表现出一个人的声音，图中每一种发音的轮廓都是这个说话者的单独特征。
An electronically recorded graphic representation of a person's voice, in which the configuration for any given utterance is uniquely characteristic of the individual speaker.
声波纹一种电子记录下来的图纹，表现出一个人的声音，图中每一种发音的轮廓都是这个说话者的单独特征。
An electronically recorded graphic representation of a person's voice, in which the configuration for any given utterance is uniquely characteristic of the individual speaker.
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