DP44

What the DP44 does in a medium room

The AISPEECH DP44 is a desktop or 1U rack digital signal processor that manages the audio path between microphones, loudspeakers and your video conferencing system. It provides four analog inputs, four analog outputs, four Dante inputs and four Dante outputs, so one unit can handle a mix of wired devices and networked audio in a room of medium size.

Wired microphones and sources connect to the analog inputs, while amplifiers and active speakers connect to the analog outputs. The Dante ports link the room to an IP audio network. The unit runs at 48 kHz with 24-bit quantisation, offers a 113 dB input and output dynamic range, and has a processing delay below 3 ms.

Echo, noise and equalisation controls

Most of the tuning work in a conferencing room happens in the DSP settings. The DP44 includes:

• Two-channel echo cancellation with a 512 ms tail and 60 dB cancellation depth
• Noise suppression with an 18 dB SNR improvement
• Feedback suppression with a 10 dB gain boost
• An 8-band parametric equaliser with five filter types

These controls matter most in classrooms and boardrooms where microphones sit close to loudspeakers. The echo tail sets how long reflected sound is removed after each spoken word.

Control, USB and power

The DP44 can be controlled through RS232, RS485 or UDP, and it supports a custom user interface for up to 30 devices. A built-in USB sound card with two inputs and two outputs lets a laptop or room PC use the unit for calls. Power comes from a DC 12 V input or from PoE at 48 V through the DANTE/AES67/PoE port. The front panel shows system status, power, signal activity on the inputs and outputs, and USB audio.

Where it fits in Qatar

Three typical situations:

• A meeting room in a government ministry or authority in Doha, where staff join calls with teams abroad and need clear speech from a few table or ceiling microphones.
• A classroom in a private school or on a campus in Education City, where the teacher moves around the room and needs echo and noise control to keep voices clear.
• A medium boardroom in a West Bay or Lusail office, where a Dante-enabled microphone source feeds the room system over the network.

Planning the installation

The unit measures 215 × 162 × 44 mm and weighs 2 kg, so it fits a credenza or a 1U rack shelf. Before ordering, confirm your power route, DC 12 V or PoE 48 V, and the number of analog and Dante channels each room needs. The source data does not give an operating temperature range, so if the unit will sit in a comms cabinet or a hot space during summer, ask the SmartRooms Qatar team to confirm the environment before installation. A free site survey can check cable routes and rack space. Quotations are usually issued within one working day, and schools and government bodies can order against an LPO.

Request a quote from SmartRooms Qatar for the DP44. Tell us your room size, channel count and power plan so we can prepare a quotation for your project.