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AEC AFC Professional Audio Processor Mini Audio Box With 4 Input Signal Interfaces

Shenzhen FHB Audio Technology Co., Ltd.

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Address: No.312, 2712 SongBai Road, LongTeng Community, Shiyan Street, Baoan District, Shenzhen, Guangdong , China.518108

Contact name:Iris

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AEC AFC Professional Audio Processor Mini Audio Box With 4 Input Signal Interfaces

Country/Region china
City & Province shenzhen guangdong
Categories Other Consumer Electronics
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Product Details

 Professional Audio Processor Educational Equipment AEC AFC Mini Audio Box With 4 Input Signal Interfaces

 

Main Features:

  • Analog input channel: 4
  • Analog output channel: 4
  • Built-in two in two out USB sound card, support music playback, recording and soft video conferencing ,Such as: ZOOM, Tencent Conference, Dingding conference, etc.;
  • Two channels independent AEC, tail time: 512ms, convergence rate: 60dB/S, echo cancellation amplitude: 60dB; Independent channel AFC (feedback suppression), using notch algorithm, sound transmission gain increase amplitude: 10dB; Noise suppression (ANS), signal-to-noise ratio increased by 18dB
  • Eight-stage English parametric equalization provides five filter choices:
  • Parametric, Lowshelf, Highshelf, Lowpass, Highpass;
  • Provides customized operation interfaces for terminal users. A maximum of 30 devices can be managed on one interface.
  • With the central control function, support RS232, RS485, UDP three control modes, can be the system power, signal switching, environmental control, audio control and other overall control, to achieve a key to open the system required functions.

Model No.MU44
DSP ProcessingADI SHARC 21489@450 MHz SIMD
Number of analog channels4 Input +4 Output
Core AlgorithmAutomatic mixing, feedback elimination(AFC), echo elimination(AEC), noise elimination(ANC)
USB Port1
Input gain0/6/12/18/24/30/36/42/48 dB
Digitalizing bit24bit
Sampling Rate48k
Frequency Response(20~20KHz)±0.5dB
Phantom power+48V/10mA max
The Max level+18dBu
Input to output dynamic range110dB
output to input dynamic range112dB
Dynamic range(Analog)110dB
Channel isolation @1kHz108dB
Total harmonic distortion + noise<-100dB@4dBu
System delay<3ms
Input impedance (balance -type)5.4KΩ
Output impedance (balance -type)600Ω
Weight2Kg
Size215x162x44mm
Working Power SupplyDC12V

 

 

Optional Control Panel:

 

OLED screen consists of a 1.3” OLED screen and a knob. OLED screen display strategy is classified
according to menu. There are totally three types of menus including menu, buttons and presets.
Double click a OLED screen in design area of the screen to enter its detailed setting as shown below.
Click "add menu" to pop up menu selection box, choose corresponding menu and confirm it. After
finishing the setting of software menu configuration, click toolbar download icon to download the
configuration to panel hardware.
Operation steps of panel:
1. Display panel name and IP address on main interface and turn the knob left or right to switch
menu.
2. Press the button on the knob, and the second row on menu interface starts to flash, which
indicates that it enters edit mode.
3. Turn the knob left or right to change value.
4. Press the button on the knob again to edit mode and go back to menu mode.

Key Panel:
 
There are 8 keys and one knob on key panel. The knob is used to adjust gains, and 8 keys can be
used to realize different functions through programming. There are four types of key functions,
including volume adjustment, mute, preset and command. Drag an item in function area to
appointed key to finish programming of the key.
Similarly, after finishing all programming, users may use the emulation button to check whether the
configuration is correct
 
Instructions for panel operation indicators
1. Key indicator stays on, which indicates the key is configured with mute function.
2. Key indicator keeps flashing, which indicate the key is configured with gain function. The
configured knob also uses and adjusts gain of the channel. 13 indicators around the knob indicate
gains. They are on or off with gain size. All 13 indicators off indicates gain of -72dB while all on
indicates gain of 12dB.
3. A sudden flash happens when pressing the key indicator indicates the key is configured with
preset or command function.
Command function: The command data come from central control command. Please refer to
section 5.
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