Beidou Digital Audio DSP

Descriptions

Processor: ADI SHARC 21489@450 MHz SIMD;

DSP processing capability: 400 MIPS, 1.6 GFLOPS;

Sampling rate: 48 kHz, ± 100 ppm;

THD+N:0.002% @+4dBu

Input dynamic range: 110dB

Output dynamic range: 110dB

1 channel RS232

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

Bus-type AEC, tail time: 512ms, convergence rate: 60dB/S, echo cancellation amplitude: 60dB;

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

Noise suppression (ANS), signal-to-noise ratio increased by 18dB

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;

It has a central control function, which 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 and is no less than a 40bit DSP floating point operation engine;

The number of analog input and output channels is not less than 4*4 / 8*8 / 16*8 / 16*16;

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

Input channels should have:

- No less than 8-band PEQ,

- And no less than five filter types available;

Gain sharing automatic mixing (AMC),

Automatic gain (AGC);

Each channel should have no less than 8 points of adaptive feedback suppression (AFC);

Output channels should have:

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

- Not less than 8x5 matrix;

- No less than 16 sets of presets;

Support input and output channel LINK and grouping functions;

The frequency response range is not less than 20～20kHz (±0.5dB);

THD+N:0.002% @+4dBu

Input dynamic range: 110dB

Output dynamic range: 110dB