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Microphone Sound Reinforcement Audio Processor

Microphone Sound Reinforcement Audio Processor

DA33
A professional audio processor chip, loaded with industry-leading audio pre-processing algorithms such as automatic feedback suppression (AFC), automatic noise suppression (ANS), automatic echo cancellation (AEC), automatic gain control (AGC), reverberation suppression, stationary noise, transient noise, etc., can effectively improve the quality of voice sound reinforcement interaction. It is widely used in teaching sound reinforcement in the education industry. Teachers do not need to use wireless handheld microphones or gooseneck microphones when giving lectures, which completely frees teachers' hands to move freely in the podium area, creates a soft sound environment, protects teachers' throats, and protects students' hearing. It can also be used for speaker sound reinforcement in conference rooms. It has various functional modes and supports different scenarios for local sound reinforcement and remote interaction.

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Features Technical Indicators Overall Dimension

1. Pure embedded design
①The system adopts pure embedded system, high stability, low power consumption
②Support 7*24 hours work
2.Diversified audio access methods
①Support 4-way audio input
②Support 9-way phantom microphone input
③Support 1-way UAC audio input and output
3.Built-in non-sensing sound compensation function
①Teachers do not need to hold the microphone, wear a bee, or endure the harsh sound, and can easily spread the sound throughout the classroom
②Satisfy the sound field balance and frequency balance of the front and back rows in the classroom, and can achieve even distribution of sound in the classroom
4.Built-in power amplifier
①Supports 2-channel audio amplifier output interface, single-port output power 150W, total output power up to 300W
②Supports short circuit, open circuit, overheating, overload, DC and other protections
5.Built-in audio processing module
①Supports feedback elimination, echo cancellation, automatic mixing, noise suppression, AI noise reduction and other functions
②Sound reinforcement in a reverberant environment will not amplify the reverberation, and has the function of suppressing and eliminating reverberation
③AI noise reduction, automatically filters steady-state noise and non-steady-state noise, such as environmental background noise, whiteboard knocking, knocking on the table and other noises
④The sound reinforcement is clear and loud, the voice has no tailing, and there is no howling when moving

System Features	Operating system	Linux
	Front physical buttons	Mic disable switch, media volume up-down, sound reinforcement volume up-down, wireless microphone volume up-down
	End-to-end delay	≤15ms
	High-precision sampling rate	32K/16bit
	Environmental noise reduction	Environmental background noise, whiteboard tapping, etc.
	Howling suppression performance	18dB, no voice tailing, no howling when moving
	High reverberation environment	No howling
Interface	Audio input	1 3.5mm analog linear audio input interface, 3 Phoenix terminal analog linear audio input interfaces, 9 Phoenix terminal 48V phantom microphone audio input interfaces, 1 UAC audio input interface
	Audio output	3 3.5mm analog linear audio output interfaces, 2 SPK OUT, 1 UAC audio output interface
	Network interface	1 RJ45: 10/100 adaptive
	Power interface	1 DC power socket with inner diameter 2.5mm, outer diameter 5mm
Power supply unit	Input power	DC24V
	Maximum power consumption	90W
	Standby power consumption	2W
Operating Environment	Storage temperature	-10℃~+50℃
	Storage humidity	90%RH
	Operating temperature	0℃~50℃
	Operating humidity	70%RH
	Body color	Black
	Body material	Sheet metal SGCC
	Overall size	240.00.mm(W) x 145.00mm(D) x40.00mm(H)
	Packing method	Carton
	Packing size	453mm318mm128mm
	Net weight	About 0.9 Kg
	Gross weight	About 3.4 Kg
Accessories:	Power adapter,1 ground wire, certificate of conformity and warranty card, Phoenix terminal accessory package, packing list;