Audio-Technica ATDM-0604a 6-Channel Digital SmartMixer - Manual (Page 52)

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Key functions
6. Select the output destination for the processed signal from
"Output".
• Multiple "Outputs" can be selected. The selected "Output" will output
an AEC/NC'd signal to the bus selected in "Input BUS". AEC/NC outputs
have priority (override) over channel strip assignments.
• For example, if CH1 is assigned to bus 1 and CH2 to bus 2, and "Input
BUS" for AEC is set to 1 and "Output" is set to 2, OUT2 will output an
AEC-applied signal to CH1.
7. Confirm that the ERL meter fluctuates.
• Perform the following procedures as necessary.
8. Adjust the distance to the microphone, speaker position, input
level, etc. so that the ERL meter is below 0.
• If the ERL meter is greater than 0, try the following
- Move microphone and speaker placement away
- Increase input for AEC Reference
9. If necessary, turn ON “NLP”.
• These features may increase the echo canceling effect.
• If the echo no longer disappears, turn AEC on/off and restart the product.