NLP AEC Digital Audio DSP

Descriptions

Analog input channels: 8

Analog output channels: 8

Processor: ADI SHARC 21489@450 MHz SIMD x2;

DSP processing capability: 400 MIPS, 1.6 GFLOPS;

Sampling rate: 48 kHz, ± 100 ppm;

THD+N:<-95dB @17dBu

Input dynamic range: 113dB

Output dynamic range: 113dB

Provides 8 devices for online operation at the same time;

Built-in one-in and one-out USB sound card, supports music playback, recording and soft video conferencing (such as ZOOM, Tencent Conference, DingTalk Conference, etc.);

4-channel independent adaptive echo cancellation, tail time: 512ms, convergence rate: 60dB/S, echo cancellation amplitude: 60dB;

Independent channel AFC (feedback suppression), using notch algorithm, sound transmission gain improvement: 10dB;

Gain sharing automatic mixing (AMC),

8-band British parametric equalizer, providing 5 filter options: Parametric, Lowshelf, Highshelf, Lowpass, Highpass;

Provide end-user customized operation interface, supporting up to 30 devices managed by the same interface;

Support camera tracking;

With 8 channels of GPIO;

It has a central control function and supports three control methods: RS232, RS485, and UDP. It can control the power supply, signal switching, environment control, audio, etc. in the system as a whole, and realize the functions required to start the system with one click.

Features

A customized user interface needs to be provided;

Requires built-in USB sound card to support recording and remote conferencing;

The processor chip adopts ADI architecture, no less than 40bit DSP floating point operation engine, and provides free configuration software architecture;

The number of analog input and output channels is not less than 8*8;

Input and output quantization is no less than 48KHz/24bit;

Input channels should have:

Input gain 3dB step, no less than 16 gears;

No less than 8-band PEQ, and no less than five filter types available;

No less than 4 channels of independent adaptive echo cancellation (AEC), noise suppression (ANS);

Gain sharing automatic mixing (AMC),

Automatic gain (AGC);

camera tracking;

Each channel should have no less than 16 points of adaptive feedback suppression (AFC);

Output channels should have:

No less than 8-band PEQ, frequency divider, delayer, limiter.

Not less than 15x9 matrix;

No less than 16 sets of presets;

Support input and output channel LINK and grouping functions;

Input dynamic range is not less than: 113dB

Output dynamic range is not less than: 113dB

The frequency response range is not less than 20～20kHz (±0.3dB);

THD+N: not less than -95dB @17dBu