Allen & Heath M-AHM-32-AEC-A Echo Cancellation Module for AHM-32

Remote meeting participants hear distracting echoes when their own voice is played through the room loudspeakers, picked up by the microphones and sent straight back to them. This processing expansion module gives the AHM-32 matrix processor dedicated hardware for acoustic echo cancellation, detecting the echo in the far-end feed along with residual room effects and minimising it.

Up to 12 channels of AEC can be assigned through the inserts on input channels, supporting multi-microphone conference setups with a single AEC reference. The same module can instead provide up to 8 instances of feedback suppression on zone channels, each with up to 25 live or fixed bands, to tame troublesome voice-lift and sound reinforcement systems.

The module fits inside the AHM-32 chassis, plugging into the mating connector on the main board and fixing through its four pillars. All AEC and FBS parameters are then available in AHM System Manager.

Features

• Processing expansion module for the AHM-32 matrix processor
• Up to 12 channels of acoustic echo cancellation (AEC)
• Up to 8 instances of feedback suppression (FBS) with 25 live or fixed bands each
• 150ms FIR adaptive filter
• Far-end AGC (Automatic Gain Control) and near-end gating
• Residual echo non-linear processing and background noise reduction
• Speech-shaped comfort noise
• Configured from AHM System Manager software

Technical Specifications

• Compatibility: Allen & Heath AHM-32 only
• AEC Channels: up to 12 (one AEC reference per setup)
• FBS Instances: up to 8, 25 bands each, mono or stereo zones
• Adaptive Filter: 150ms FIR
• Installation: internal; top panel removed, Torx T8 screwdriver
• Manufacturer Part Number: AH-M-AHM-32-AEC-A
• UPC: 6938122250949

What's Included