Allen & Heath - M-AHM-64-AEC
The Allen & Heath M-AHM-64-AEC is an audio processing add-on for the AHM-64 matrix processor with 12 AEC channels and 150 ms echo cancellation capabilities, ideal for clear, uninterrupted communications. It features adaptive filters, automatic gain control, and a non-linear processor to optimize audio quality during conferences and video conferences by perfecting the sound reproduction of a single microphone or multiple microphones simultaneously.
Specifications
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Allen & Heath M-AHM-64-AEC
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AEC (Acoustic Echo Cancelling) module for AHM-64
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12 AEC channels
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150ms FIR adaptive filter
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AGC (automatic gain control) at the end of the chain
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NLP (non-linear processing) residual echo
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Background noise reduction
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Active proximity gate
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Comfort noise for speech
Presentation
Equipped with 12 AEC channels, each capable of 150 ms echo cancellation, the module uses Xilinx FPGA devices and ARM Cortex A9 processors. It is ideal for configurations requiring precise and efficient echo management, ensuring clear and uninterrupted communication.
Technical features of the M-AHM-64-AEC include adaptive filters that continuously adjust the room impulse response to simulate echo. An automatic gain control (AGC) maintains a constant level for the remote caller, while a conversation state detector identifies voice activity and double talk. A non-linear processor (NLP) attenuates residual echoes and reduces background noise, ensuring optimum performance in challenging acoustic environments.
The M-AHM-64-AEC’s user interface allows for easy configuration of AEC inserts for both the far and near input channels, ensuring that dynamic processing does not disrupt the echo cancellation process.
For local speech reinforcement applications, the M-AHM-64-AEC offers a dedicated SR output, bypassing dynamic processing and comfort noise for high-quality speech reproduction. This approach ensures optimum performance while minimizing latency.
In short, the Allen & Heath M-AHM-64-AEC is an advanced and flexible solution for professionals looking to improve the quality of audio communications in conferences or video conferencing.
Additional documents
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