hifi下载

A HiFi system is a set of components designed to make music sound as good as possible. HiFi aims for clear, noiseless audio, not just high volume and boosted bass. Music on a HiFi system will sound radically better than music on the headphones that came with your phone, due to many different factors like less signal interference (and thus, less noise), higher frequency response and clarity on the headphones, and a much better listening experience with over-ear headphones.

HiFi系统是一组旨在使音乐听起来尽可能出色的组件。 HiFi旨在提供清晰，无噪音的音频，而不仅仅是高音量和增强的低音。 由于许多不同的因素，例如更少的信号干扰(因此，噪音也更少)，耳机的频率响应和清晰度更高，HiFi系统上的音乐听起来比手机随附的耳机上的音乐要好得多。戴入耳式耳机的聆听体验。

People who enjoy high-end audio are called “audiophiles,” and the audiophile scene is complicated and can seem hard to get into. Here, we’ll break down what each part in a HiFi setup does, and how it contributes to the overall sound.

享受高端音频的人称为“发烧友”，发烧友的场景很复杂，似乎很难进入。 在这里，我们将细分HiFi设置中的每个部分的功能，以及它们对整体声音的贡献。

数字音频转换器(DAC) (Digital Audio Converters (DAC))

The DAC is essentially a really high-end headphone jack. It’s the starting point for all the audio in your system. Because of electrical noise in your computer, audio from the built in headphone jack sounds very noisy. You might not notice this noise on most headphones (as most headphones are noisy anyway), but on HiFi headphones it becomes apparent.

DAC本质上是真正的高端耳机插Kong。 这是系统中所有音频的起点。 由于计算机中的电气噪声，内置耳机插Kong的音频听起来非常嘈杂。 您可能不会在大多数耳机上注意到这种噪音(因为大多数耳机还是很吵)，但是在HiFi耳机上却很明显。

The solution is to isolate that electrical interference with an external DAC. These are built with much higher quality components than the built in DAC in your computer. They’re often are capable of powering higher impedance headphones and supplying phantom power to mics that need it.

解决方案是隔离与外部DAC的电干扰。 这些组件的质量比计算机中内置的DAC高得多。 它们通常能够为高阻抗耳机供电，并为需要的麦克风提供幻像电源。

功放 (Amplifiers)

For most speakers, and some headphones, you’ll want an amp to power up your audio before listening to it, as it may be quiet coming straight off the DAC. If you have lower impedance headphones, a USB DAC should power them just fine, but anything requiring 250 Ohm and above means you’ll probably want an amp so that the noise from the the DAC doesn’t ruin things.

对于大多数扬声器和某些耳机，在收听音频之前，您需要一个放大器为音频加电，因为从DAC出来时它可能很安静。 如果您有阻抗较低的耳机，则USB DAC应该可以为它们供电，但是任何要求250 Ohm及以上的耳机都意味着您需要一个放大器，以免DAC产生的噪音不会损坏东西。

The reason amps are necessary is because most DACs are not made to amplify audio beyond a certain point. If you were to turn the DAC up to 10, it would sound incredibly noisy (the bad kind of noise). However, you could turn it to 5, and then set the amp to crank it up 200%, and the audio would still be clear

放大器之所以必要，是因为大多数DAC都不是为了放大特定点之外的音频而设计的。 如果要将DAC的最大音量提高到10，则听起来会令人难以置信(非常糟糕的噪声)。 但是，您可以将其设置为5，然后将放大器设置为将其提高200％，音频仍然清晰

耳机和扬声器(Headphones and Speakers)

All the parts above get the digital sound from your device out over a wire. At the other end of that wire, you’ve got the option of headphones or speakers.

上面的所有部分都可以通过电线从设备上获得数字声音。 在那根线的另一端，您可以选择耳机或扬声器。

Good speakers are complicated to set up, usually needing a large stereo receiver into which you can plug everything. Good sound is dependant on proper placement of the speakers and room acoustics. This can be mitigated somewhat with appropriate positioning and noise canceling panels.

好的扬声器的设置很复杂，通常需要一个大型立体声接收器，您可以将所有插头插入其中。 良好的声音取决于扬声器的正确放置和室内音响效果。 使用适当的定位和消音面板可以在某种程度上缓解这种情况。

Headphones are simpler, usually just requiring a single cable to plug in. These headphones will have an impedance, measured in Ohms. This is the electrical resistance of the headphones, and higher impedance headphones will require more power to drive properly. Most headphones will be very low, usually below 32 Ohms, while some headphones can go up to 600 Ohms. Generally, higher impedance will have better sound, but only if the rest of your setup matches in quality. If your DAC and amp can’t handle driving the audio that high, then you may not see any benefits—things could even sound worse off than before.

耳机比较简单，通常只需要插入一根电缆即可。这些耳机的阻抗(以欧姆为单位)。 这是耳机的电阻，阻抗更高的耳机需要更多的功率才能正确驱动。 大多数耳机会非常低，通常低于32欧姆，而有些耳机则可能高达600欧姆。 通常，较高的阻抗将具有更好的声音，但前提是其余设置的质量必须匹配。 如果您的DAC和放大器无法处理如此高的音频，那么您可能看不到任何好处-事情听起来可能比以前更糟。

The main thing to check when looking for headphones is the frequency response and overall clarity. Some headphones, like Beats, will crank up the bass on their headphones to give the illusion of better sound. To an untrained ear, this can sound really great, but a HiFi setup should ideally have a reasonably flat frequency response, with no modification to the incoming audio. Overall clarity is hard to measure, but affects sound quite a bit. This will come down to the build quality and usually the price of the headphones.

寻找耳机时要检查的主要内容是频率响应和整体清晰度。 有些耳机(例如Beats)会提高耳机的低音，从而产生更好的声音效果。 对于未经训练的耳朵，这听起来确实很棒，但理想情况下，HiFi设置应具有合理的平坦频率响应，而无需修改传入的音频。 总体清晰度很难衡量，但会影响声音很多。 这将取决于制造质量，通常取决于耳机的价格。

传声器 (Microphones)

Depending on your use, you might not need a mic, but people who are looking to record audio can easily add them to their setup. Most high end mics will use XLR connectors, which most DACs support. Some mics—condenser mics in particular—require 48 volt phantom power, which means it needs an external power source to function. It gets power from the XLR cable itself though, so you don’t have to plug in anything extra, just flip a switch on your DAC. Make sure though that you’re not delivering phantom power to a mic that doesn’t support it, though, as you could damage the mic.

根据您的用途，您可能不需要麦克风，但是希望录制音频的人可以轻松地将它们添加到他们的设置中。 大多数高端麦克风将使用大多数DAC支持的XLR连接器。 某些麦克风(尤其是电容式麦克风)需要48伏幻像电源，这意味着它需要外部电源才能工作。 不过，它是通过XLR电缆本身来供电的，因此您无需插入任何额外的东西，只需翻转DAC上的开关即可。 但是，请确保不要向不支持它的麦克风传递幻像电源，因为这可能会损坏麦克风。

额外配件 (Extra Accessories)

You’ll obviously need cables to plug all this together, but not just any cables will cut it. Since most of these components take power from the wall, you’ll need shielded cables. Normal aux cords that you may use to play music in your car are not shielded, and will pick up tons of static from nearby electrical signals. Shielded cables come at a premium, but are necessary, because if any component in this loop is low quality, it’ll ruin the audio. You don’t need fancy, high-end, gold-plated connectors or anything, but shielding is a must.

显然，您将需要电缆将所有这些电缆连接在一起，但并非只有电缆能将其切断。 由于这些组件中的大多数都是从墙上取电的，因此您需要屏蔽电缆。 您可以在汽车中播放音乐的普通辅助线没有被屏蔽，会从附近的电信号中吸收大量静电。 屏蔽电缆非常昂贵，但很有必要，因为如果此环路中的任何组件质量低下，都会损坏音频。 您不需要高档的高端镀金连接器或其他任何东西，但必须使用屏蔽。

总览 (Overview)

So how does this all fit together? Well, when you play a file in iTunes for example, your computer sends it over USB to the DAC. The DAC decodes it and then sends the actual analog audio out to the amp (usually over a 1/4″ cable but sometimes over a standard headphone cable). After it’s been amped up, the signal travels to your headphones or speakers where you can finally listen to it.

那么，这一切如何融合在一起？ 好吧，例如，当您在iTunes中播放文件时，您的计算机会通过USB将其发送到DAC。 DAC对其进行解码，然后将实际的模拟音频发送到放大器(通常通过1/4“电缆，但有时通过标准耳机电缆)。 放大后，信号传播到您的耳机或扬声器，您最终可以收听到。

The end result is amazingly clear audio.

最终结果是惊人的清晰音频。

那我要买什么？ (So What Do I Buy?)

You don’t need to buy crazy expensive components to have a great experience. The reverse is also true, you can purchase overpriced components and end up with noisy, distorted audio. It’s all about quality, and comes down to each part itself.

您无需购买疯狂的昂贵组件即可获得出色的体验。 反之亦然，您可以购买价格过高的组件，并最终产生嘈杂的失真音频。 一切都与质量有关，并涉及到每个零件本身。

The exact components of your setup will differ depending on your needs, your budget, and your personal preferences. The market is very diverse, and as such we can’t easily put together a comprehensive guide to buying every single part you may need. We encourage you to do your own research and read reviews from more qualified audio professionals before deciding what to buy.

根据您的需求，预算和个人喜好，设置的确切组成部分会有所不同。 市场非常多样化，因此，我们无法轻松地为您可能需要的每个零件的购买提供全面的指南。 我们鼓励您进行自己的研究，并合格音频专家的评论，然后再决定购买什么。

Image Credit: pelfophoto/Shutterstock

图片来源： pelfophoto / Shutterstock

翻译自: https://www.howtogeek.com/364373/how-to-configure-a-hifi-desktop-audio-system/

hifi下载