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What are the advantages of a digital mixer over a traditional analog mixer?


For those who specialize in audio production, the mixer will not be unfamiliar, and the types of mixer are divided into analog mixer and digital mixer, and the mixer we collectively refer to generally refers to the mixer of analog signals. With the continuous updating of the digital age, there are a large number of digital mixer products in the current mixer market,What is the difference between analog and digital mixer? And what are the characteristics and performance of digital mixer?Below for everyone one by one analysis.

Mixer (Audio Mixing Console) in the sound reinforcement system and audio and video recording is a frequently used equipment. It has multiple inputs, and the sound signals of each channel can be processed separately, for example, it can be amplified to compensate the sound quality of treble, midrange and bass, add flavor to the input sound, and locate the sound source of the channel in space. It can also mix various sounds with adjustable mixing ratio; it has a variety of outputs (including left and right stereo output, edit output, mixed mono output, monitor output, recording output and various auxiliary outputs, etc.). The mixer plays a central role in many systems. It can not only create stereo sound, beautify sound, but also suppress noise and control volume. It is an indispensable machine for sound art processing.

The analog mixer is a conventional mixer, so it is directly called the mixer without emphasizing the word analog. Digital mixer is the development of digital technology applied to the mixer. The mixer is its essence and commonality, and the number is its characteristic. Therefore, the design idea of the digital mixer is completely equivalent to the conventional mixer. However, due to the application of digital technology to the mixer, the performance standard of the digital mixer is higher and the implementation of conventional functions is more flexible, and the digital mixer adds some new functions and processing methods that the analog mixer cannot achieve.

  The key to the characteristics of the digital mixer is digital. In summary, the digital mixer has the following unique functions and characteristics:

1. Increase of audio processing unit

Some digital mixer sets delay (device), pressure limit (device) and other units in its branch and/or main circuit. Such settings are beyond the reach of general analog mixer, which is equivalent to adding many peripheral devices to be connected from the disconnected connector of the mixer, thus making the configuration of the sound system simple and the functions increased.

2. Database function of audio processing link

There are many existing standard processing mode programs that can be called according to different audio sources, occasions, signal characteristics, etc. in the audio processing links such as equalization, pressure limit, in-machine effects, etc. Although this is similar to the way of a fool camera, it should not be copied completely, because different program sources and scenes always have their particularities and cannot be absolutely the same, but the processing mode provides a general processing method after all, which can be adjusted on this basis. In addition, the database is equivalent to the role of textbooks and materials, providing parameters for various processing modes.

3. Memory storage of each tuning link

In some parts, there is a certain user program space in the links of equalization, pressure limit and in-machine effect, which can store various processing parameters adjusted by users themselves. In general, some digital mixer has scene (Scene) memory storage program space, which can be used to store the current state of various parameters including equalization, pressure limit, in-machine effect, shunt level and total circuit level, therefore, there can be a relatively stable tuning standard for some regular programs. There is also a digital mixer that can set the switching movement time of the split push and/or total push in different positions of the two scenes when the two stored scenes are switched, which can produce the effect of automatic fade-in and fade-out.

4. Flexible combination and exchange of various links within the mixer

This kind of function is quite different in different mixer, but it is realized by using the flexible processing means of digital signal. Such as the change of the level indication point, the two input signal exchange path, the direct grouping and mute grouping of the split push, the duplication of the tuning control state of one branch to other branches, etc.

5. Multi-functional and intuitive display

The digital mixer usually has a larger display screen to display different control interfaces, give various status parameters, and visualize the pattern display.

6. Digital direct matching of digital audio equipment

The digital mixer can be matched with the audio equipment according to the conventional analog signal input and output mode, and can also be matched with the digital audio equipment by the direct input and output of the digital signal through the optical cable and the data line. Because it is a digital signal, although only one optical cable, it can also achieve multiple inputs or outputs, expanding the input and output paths.

7, can achieve MIDI function

The digital mixer can realize the function of MIDI, the so-called MIDI is the digital interface of electronic musical instruments (MIDI). The original intention of MIDI was only the interconnection between electronic musical instruments and electronic musical instruments and computers, and now it also includes the interconnection between digital audio equipment and electronic musical instruments and computers. Through the connection, the digital interface of MIDI is used to transmit the keyboard key information reflecting the parameters of music notes, timbre, rhythm, chord, etc. and the control information between the devices to realize the tasks of composition and multi-track sound synthesis. Some professionals who are used to analog mixer often feel uncomfortable, because one of the biggest disadvantages of digital mixer is that some function adjustments are not directly reflected on the panel like analog mixer. Some keys have different functions in different states and should be realized through interface conversion. Some functions should have a calling process, and different types of digital mixer also have different function calling operations. Therefore, if you are not familiar with the digital mixer of this model, a problem will occur in the field tuning.

In fact, the digital mixer is not difficult to master. As mentioned earlier, the essence of the digital mixer is the mixer. As long as the mixer is truly mastered and the basic matching, function and operation of the mixer can be analyzed from the signal flow block diagram of the mixer, then the digital characteristics of the mixer still have their own rules.

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