Why do many manufacturers play with laptops instead of professional equipment at many audio exhibitions?

Participated in the music exhibition for six consecutive years. At the exhibition, I will see those who use vinyl records as sound sources, CD turntables and decoders as sound sources, and digital broadcasting and audio decoders as sound sources. Of course, these look professional, but I also see those who use laptops as audio sources. In fact, this is also a professional technology, but generally only the storage and operation functions of the computer are used, and the audio part is rarely used. Generally, a decoder is followed, that is, the digital signal is transmitted to the fever decoder, and then the power amplifier and speaker are driven. Note that the digital signal sent by the notebook computer has a great relationship with the playback software, and different algorithms produce different sounds. However, among these sound sources, the most natural sound quality is vinyl, the sound density and balance of CD turntable and decoder are better, and the sound density of digital player and decoder is slightly worse, but it is more convenient. Computer plus decoder is similar to digital broadcast sound. So, when you go to the audio exhibition and see the merchants using laptops, don't just think about it. There must be a decoder behind it, and it is rare to directly use the output port of notebook headphones as the sound source.

In fact, insiders know very well:

With the development of electronic technology, the sound quality of many notebook computers can be comparable to that of CD players. Some are even better than CD players. However, it is more convenient for us to choose songs with laptops, and we also use laptops to play various performances.

Those high-priced decoders and high-priced players are nothing more than cheating laymen of their money. Anyone who knows acoustics knows that human beings simply can't hear the difference in sound quality, let alone the noisy environment of the exhibition.

Those people who play vinyl records make experts laugh. Vinyl records are inferior to digital formats in terms of sound quality, convenience and life span.

You should be talking about the professional audio exhibition in Pazhou. There are many reasons for this. The first one is that bars are basically powered by computers, and Apple computers are standard, so exhibitors use computers as sound sources. The second is to facilitate the computer to choose the sound source. If the audience wants to listen to the content with special rhythm, they can give it quickly, which is difficult to achieve if they put it on CD. The third professional sound system needs to debug professional equipment such as audio processor, and these debugging software all need computers.

You mean that the laptop can't realize lossless decoding of digital audio files? What's the notebook computer called computer like? CPU can eat shit so fast.

It seems that the role of digital broadcasting is not very great, and the effect is no different from that of notebook, which is flexible and convenient to choose songs. Buying a notebook for digital broadcasting is better than broadcasting tens of thousands. Isn't it? !

Because there is something called an audio decoder, the computer only provides digital audio signals, and then the decoder converts the read digital audio signals into analog audio signals and outputs them to amplification equipment for playback. A good pure tone decoder is expensive, costing thousands or even tens of thousands of yuan. The domestic gd0 1 I am using now is a combination of decoding and power amplification, and together with the computer and hd650 headphones, it constitutes a relatively low-cost small system.

In the era of analog signal, the quality of components and circuit design of broadcast source will have a great influence on sound quality. Therefore, broadcasters often choose high-quality equipment. In the digital age, even if the power amplifier is digital, it is still a problem of equipment. Either stupid or stupid. As long as the digital sound source is exactly 0 and 1, it can be perfectly reproduced. If the power amplifier is a digital power amplifier, it can perfectly reproduce the original code output. The only analog device is the speaker in the sound box. As long as the speaker quality is good enough, it can be played perfectly. There are also false friends who even use time base errors to cause frequency changes. Please, the accuracy of the worst time-base chip is already several orders of magnitude higher than that of analog equipment. If the time base error can be heard, is tm a god or a man?

The most intuitive thing is that if a cd is scratched, there will be a sonic boom when it is played, because the scratched cd has an error code. As long as there is an error code in the digital signal, the result of the deterioration of the audio signal is a sonic boom, which can be felt by the deaf, let alone normal people.

So digital devices are still debating whether the sound quality is good or not. Either a fake enthusiast or an idiot. Except for the horn.

Nowadays, fast food culture is very popular, and people are too busy to save trouble, especially young people think that music on mobile phones and computers is very good, because young people have a lot of work pressure and long hours, and they don't have much time and energy to fully enjoy music. Listening to music by yourself requires a sense of ritual. I make a cup of tea, choose a dish by hand, turn on my courage machine D|Y, and look at the small lamp lit in the bile duct.

Obviously, because using a laptop as a digital turntable to play and display music has good sound quality!

With the development and popularization of digital audio technology, the gap between civilian products and professional products has been greatly narrowed, especially at the sound source end. At that time, the gap between ordinary household cassette recorders and professional open-chamber recorders can be said to be a world of difference. There is almost no difference between using a laptop to make a digital turntable and the so-called professional digital turntable!

Please pay attention to what I said above. The notebook computer is only used as a digital turntable. That is to say, just read the digital master file stored on the hard disk with a notebook computer, and then directly output the source code to the decoder for decoding through a digital interface (such as USB), then send it to the power amplifier and then send it to the speaker for playing; Of course, it can also be directly output by the decoder to the active speaker for playback. In a word, the function of this notebook computer is only to read the digital master file and transmit it to the decoder. All audio-related circuits in it have not participated in playback, so there will be no pollution or deterioration to the audio data stream.

Moreover, the reason why any audio worker who participated in the audio exhibition dared to use his laptop as a digital turntable to play demo music itself shows that the problem is not big! You know, the sound source is a very important factor in the whole sound system. The sound source is not good, and the advanced equipment behind it is useless. These professional exhibitors dare to use the notebook computer as a digital turntable to drive their follow-up equipment for audio display, which shows that this notebook computer will not affect the sound quality of their equipment (equipment), at least it is not the bottleneck of sound quality.

To sum up, whether in theory or practice, using a notebook computer to make a digital turntable is not much worse than professional equipment. Therefore, it is not surprising that exhibitors use laptops as digital turntables to play music and display audio equipment.

I hope this article can answer your questions. Thank you for reading!

Excuse me, which output interface of the computer outputs digital audio and connects it to the decoder?