The Knowledge of Automatic Mixer

- Aug 22, 2018-

Automatic mixer, also known as Automixer, is designed to simulate and improve the results of traditional mixers to maximize system sound gain. The automixer can replace the operator's work, or it can be used with the operator to automate the audio.

There are two major types of automatic mixers developed on the basis of different potential technologies: the Gating Automixer and the Gain Sharing Automixer.

Advantages and disadvantages of gating automixers:

Gating automixers are based on noise gate development, and each channel has a noise gate that is either open or closed. The logic that determines whether a channel is open or closed can be determined simply based on a fixed threshold and a reference priority. The working principle of this type of automatic mixer is that the more the number of microphones is turned on, the lower the overall sound transmission gain before the feedback critical point.

The mixer has two problems and an advantage. 1. Since the noise gate is used in each channel, there will be an abnormal effect of chattering or intermittent, accompanied by the loss of the voice header. 2. The threshold must be formulated in such a way that it can be used throughout the execution of the conference. This makes setup and calibration more difficult. 3. The advantage is that the sound gain can be maximized when a single microphone is turned on, so that the maximum output level can be obtained before the feedback threshold.

Advantages and disadvantages of gain sharing automatic mixer

Gain-sharing automixers are based on expander development, each channel contains an expander so that each channel can be open, closed, or any value between on and off, determining where a channel is based is based on Settings for Slope and Priority.

The mixer has one problem and two advantages. 1. When a speaker's own volume level is low, the volume level of itself will be lowered even lower. 2. The advantage is that there will be no situation where the threshold automixer loses the prefix. 3. It can simultaneously ensure that the system's sound gain is constant when multiple people speak at the same time, and the overall output level of the mixer is unchanged.



MAONO is an innovative designer and manufacturer of Lavalier, Podcasting, Wireless, Shotgun, Recording microphones and accessories for Smartphone, Camera and PC, etc.