I have participated in audio exhibitions for six consecutive years. At the exhibitions, I will see people using vinyl records as sound sources, CD turntables and decoders as sound sources, and digital broadcasters and audio decoders as sound sources. Yes, of course these look very professional, but I also saw some using laptops as sound sources. In fact, this is also a professional technique, but it generally only uses the storage and computing functions of the computer, and rarely uses the audio part. Generally, a decoder is connected at the back, which just passes the digital signal to the fever decoder, and then drives the power amplifier and speakers. Note that the digital signal from the laptop is closely related to the playback software. Different algorithms produce different sounds. But among these types of sound sources, vinyl has the most natural sound quality. CD turntables plus decoding have better sound density and balance. Digital players plus decoders have a slightly worse sound density, but are more convenient. Computer plus decoder is close to digital broadcast sound. Therefore, if you go to an audio show and see a laptop computer used by a business, don’t think it’s simple. There must be a decoder behind it. It is rare to see a laptop headphone output directly used as the sound source.
In fact, everyone in the know knows very well:
With the development of electronic technology, the sound quality of many notebook computers today is comparable to that of CD players. Some are even better than CD players. But laptops are more convenient for music selection, and we also use laptops to play music during various performances.
Those high-priced decoders and sky-high-priced players are nothing more than deceiving laymen out of their money. Anyone who understands acoustics knows that humans cannot hear the difference in sound quality, let alone in a noisy environment like an exhibition.
Those who play vinyl records are even more ridiculous to insiders. Vinyl records cannot compare with digital formats in terms of sound quality, convenience, and longevity.
You should be talking about the Pazhou Professional Audio Exhibition. There are many reasons for this. The first one is that most bars use computers as sound sources, and Apple computers are standard equipment, so exhibitors also I used a computer as a sound source. The second is that computers make it easy to select audio sources. If the audience wants to listen to content with a special rhythm, it can be provided quickly, which is difficult to achieve if a CD is used to play it. The third professional audio system requires adjustment of professional equipment such as audio processors, and these debugging software require a computer.
Do you mean that a laptop cannot achieve lossless decoding of digital audio files? So why should a laptop be called a computer? It's better to eat shit with such a fast CPU.
It seems that the role of digital broadcasting is not very great. There is no difference between the effect and the notebook. The notebook is also flexible and convenient to select songs. If the data broadcast costs thousands or tens of thousands, it is better to buy a laptop and use it as a data broadcast. Yes or no? !
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 the amplifying device for playback. Good pure Audio decoders are expensive, costing several thousand or even tens of thousands of yuan. The domestically produced gd01 I am using now is an all-in-one decoder and headphone amplifier, which works with a computer and HD650 headphones to form a relatively low-cost small system.
In the analog signal era, the component quality and circuit design of the playback source will have a great impact on the sound quality. Therefore, the playback source often uses high-quality equipment. In the digital age, even the power amplifier When it comes to digital power amplifiers, it’s still based on equipment. It’s either stupid or stupid. As long as 0 and 1 are exactly the same as a digital audio source, it can be perfectly reproduced. If the power amplifier is a digital power amplifier, it can perfectly reproduce the original code. For output, the only analog equipment is the speaker in the speaker. As long as the quality of the speaker is good enough, it can be played perfectly. Some pseudo-audio enthusiasts even say that the time base error can cause frequency changes. Come on, the worst time base chip. The precision is already several orders of magnitude higher than that of analog equipment. If the time base error can be heard, is he a god or a human?
The most intuitive thing is that if a CD has scratches, there will be popping sounds when playing. Because the scratched CD has bit errors, as long as there is a bit error in the digital signal, the audio will be affected. The result of signal degradation is sonic boom, which can be felt by deaf people, let alone normal people.
Therefore, those who are still debating whether the sound quality of digital equipment is good or not are either pseudo-audiophiles or idiots. Except for the speakers.
Nowadays, fast food culture is popular. People are too bored and want to save trouble. Especially young people think that music on mobile phones and computers is good, because young people work under high pressure and long hours, so they don’t have much time. I have the energy to fully appreciate music. When I listen to music, I need a sense of ritual. I make a cup of tea, select discs, turn on my own D|Y amplifier, watch the bile ducts light up, and then As songs and music that I am familiar with sound, I feel a sense of joy in my heart. This life is enough. I am a retired person who likes music.
Obviously, because the sound quality of using the laptop as a digital turntable to play the show music is good enough!
With the development and popularization of digital audio technology, the gap between civilian products and professional products has been greatly narrowed, especially on the audio source side. The gap between ordinary household cassette recorders and professional open-reel recorders can be imagined back then. It is said that there is a gap between heaven and earth.
Nowadays, there is almost no difference between using a laptop as a digital turntable and a so-called professional digital turntable!
Please note what I said above, using a laptop is only used as a digital turntable. In other words, just use a laptop to read the digital master file stored on the hard disk, and then directly output the source code through a digital interface (such as USB) to the decoder for decoding without processing, then send it to the power amplifier, and then send it to the speaker for playback ; Of course, it can also be directly output from the decoder to active speakers for playback. In short, the role of this laptop is only to read the digital master file and transfer it to the decoder. All audio-related circuits inside it are not involved in playback, so there will be no pollution or degradation of the audio data stream.
Furthermore, the reason why audio workers who participate in audio exhibitions dare to use laptops as digital turntables to play demo music shows that there is no big problem in doing so! You must know that the quality of the sound source is a very important factor in the entire sound system. If the sound source is not good, no matter how advanced the equipment is, it will be useless. And these professional exhibitors dare to use laptops as digital turntables to drive their subsequent equipment for audio demonstrations, which shows that this laptop will not affect the sound quality of their equipment (equipment), at least it is not a bottleneck in sound quality.
To sum up, in theory and practice, using a laptop as a digital turntable is not much worse than professional equipment. Therefore, exhibitors using laptops as digital turntables to play music and display audio equipment are not enough. Why.
I hope this article can answer your questions, thank you for reading!
Which output interface of the computer outputs digital audio to connect to the decoder?