Microphone sound reinforcement DSP solution

GA-750 "Ceiling microphone-array sound reinforcement" solution application for education classroom, training room, remote meeting, recordings.

Algorithm can be ported on ARM Cortex A-Series processors, Cadence Hifi-series platforms.

Here is make an example for one of the product application scene above.

Algorithm Block Diagram:

Algorithm Features:

•AFC (Acoustic Feedback Cancellation)

√Attempts to simulate the acoustic path between the speaker and microphone thus predicting the feedback signal and subtracting the prediction from the microphone signal.

• library latency:<5ms

•360°Beam forming

•Dereverberation

•AGC (Far-field (up to 7-8m) voice control)

Applications:

•Microphone-array Sound reinforcement device

(For education classroom, training room, recordings apllications)

Technologies Parameters:

•Number of Mics Supported:  Up to 7~8 (processor dependent)

•Feedback reduction:  10-20dB (system dependent)

•Noise suppression:    up to 20dB

•Processing latency:   <5ms (algorithm library)

•Automatic Gain Control: up to 20dB

•Memory Requirement:   ROM: <50KBytes, RAM: <70KBytes

•Processor Speed:            700 MIPS (min), >1GHz MIPS (preferred)