Shenzhen Ma Teng Audio Technology Co., Ltd.

News

The perfect sound system with supreme attentive service has been recognized by a wide range of users

Home  -  News  -  Industry News

Analysis of noise problems in professional audio systems

source:Industry News release time:2021-09-14 Hits:     Popular:Brand bar audio wholesale

  Analysis of noise problems in professional audio systems

  In a professional audio system, there are generally many equipment used, from professional to civilian. Different equipment has different interface methods, and the connectors used are different, from balanced. There are also balanced inputs. Output method. In order to effectively shield the interference of external electromagnetic radiation, it is necessary to use shielded cables and choose the correct connection method. We know that when the balanced transmission method is used for audio signal transmission, the external interference source affects the two cables in the balanced cable. The common mode interference level of each signal line is almost equal to the ground loop. At the input end of the internal amplifier of the device, the common mode voltage drop on the two signal lines is replaced by a differential mode voltage to cancel each other, which constitutes interference. Voltage, so balanced connection methods should be used as much as possible.

The noise problem of professional audio system

  When connecting with some unbalanced output devices, most of them are now mostly in order to save costs, convenience and labor, directly use single-core shielded cables to connect the balanced ports and sub-balanced ports, instead of using a balanced or unbalanced variator. This kind of connection shielding layer is also in the audio loop. The noise induced by the shielding layer is also mixed into the audio signal, and then the noise is added. This will be the main way to introduce noise. The correct way is to do both balanced and unbalanced transmission. Two-core shielded cables are used, and the shielding layer is only grounded at one end of the balanced output or input.

  When both ends are unbalanced devices, if the transmission distance is large, it is best to use a balanced-unbalanced converter or audio blocking transformer to convert to balanced transmission.

  The connection of current professional audio equipment covers the selection of voltage jumper methods. They all comply with the IEC268-15 specification when they leave the factory, that is, the line output of professional audio equipment is ground resistance output, and the line input terminal as the load is selected For high-impedance input, in addition to the connection between the power amplifier and the speaker, there is generally no need to specifically consider the impedance problem.


Read recommendations:

XD18C Big sound bar Merchant

C12 Bar hall sound Merchant

D80/D100/D120 KTV brand audio Vendor

The challenge is how to ensure the uniformity of the speakers?

Hohhot ID-X CLUB Audio Recommended Ma Teng Audio

Previous:The noise problem of professional audio system Back to list Next:Remember to pay attention to a few points when buying KTV audio

Popular recommendation

A2 Dalian Bar Audio Vendor

2021-07-26

Dance Stack Overview Car stereo Factory

2021-07-16

Resolution 5E Big sound bar Vendor

2021-07-16

F1201 School audio Vendor

2021-07-16

Resolution 4S Skeletal Bar use audio Vendor

2021-07-16

SB 210A Bar brand audio Vendor

2021-06-08

Evolution 7E Sound bar Merchant

2021-07-16

EVO 7THBar sound company

2021-07-17

Resolution 1.5TT Marten Audio company

2021-07-16

F218 Mk2 Learning audio Vendor

2021-07-14

I3PR Car stereo manufacture

2021-07-26

D2 AMPS Bar speakers wholesaler

2021-07-26

How to choose the right video conference system solution.Kunming Bar Audio Factory

2022-07-12

Introduction to audio-the principle of better matching of audio amplifiers.Bar sound engineering Ven

2021-11-16

Zhuhai Wildcat KTV Special Audio--Mateng Audio

2022-05-16

What are the main stage audio equipment and what are they!Marten Audio Vendor

2021-11-01

Professional audio intelligent system knowledge!Sound bar Vendor

2021-10-22

What kind of sound is popular now?

2022-03-25

Analysis of the Effect of Linear Array Sound System Debugging on Stage Atmosphere

2021-09-25

Zunyi FIRST ROOM bar sound system provided by Mateng Audio

2022-11-17

Talking about the key elements of optimizing stage sound effects!Speaker bar Vendor

2021-10-27

Tongxiang Internet Red Bar SPACE Special Audio--Mateng Audio

2022-04-11

How to match audio equipment with audio amplifier.Gymnasium audio wholesale

2021-12-28

Shanghai MASTER popular nightclub professional audio is provided by MASTER Audio

2022-07-13