Specifications

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Acoustic Echo Canceling Card Data Sheet

MediaMatrix • A division of Peavey Electronics Corporation • http://mediamatrix.peavey.com

The NION NIO-AEC Acoustic Echo Canceling Card is a wideband echo canceling device with 8 mic/line-level inputs for use in

NION DSP frames. Depending on the NION model, up to 4 NIO-AEC cards may be loaded in a NION DSP.

• Eight analog mic or line-level audio input channels with

24 bit A/D

• Eight channels of wideband acoustic echo cancellation

• Acoustic echo cancellation can be applied to mic input or

internal audio input channels (from NION)

• 48 and 96 kHz audio sampling rates supported

• High reliability DIN connector to backplane, using slide rail

for alignment

• Mini-Euro connectors for easy input connection

Specifications

Features

Description

Architect’s & Engineer’s Specifications

CATEGORY INPUT CHANNELS DESCRIPTION

AUDIO CHANNELS 8 Analog mic/line-level signals, selectable per channel, and AEC processing

FREQUENCY RESPONSE 20 ~ 20 kHz (+/-0.5 dBr) Referenced @ 1 kHz, 22 dBu input level, via AEC processor

ANALOG INPUT: RELATIVE PHASE +/- 0.4 degrees 20 Hz ~ 20 kHz, referenced @ 1 kHz, 22 dBu input level

ANALOG INPUT: THD+N 0.004% 22 kHz bandwidth measurement, +4 dBu signal with 20 dB Headroom

ANALOG INPUT: DYNAMIC RANGE -110 dB A-weight filter measure

ANALOG INPUT: CROSSTALK -102 dB 20 Hz ~ 20 kHz, measured between channel pairs (1-2, 3-4, 5-6, 7-8) +33 to -42 dBu

PHANTOM POWER 48 VDC Available on a per channel basis

MAXIMUM INPUT SENSITIVITY SETTINGS +21 to -42 dBu In 3dB increments, less than 1.0 dB error between settings

ANALOG GAIN -3 TO +60 dB True analog gain

LINE INPUT IMPEDANCE 5.3K Ohms Effective for sensitivities of +33 dbu to +6 dbu

MIC INPUT IMPEDANCE 1.9K Ohms Effective for sensitivities of +3 dBu to -42 dBu

EQUIVALENT INPUT NOISE (EIN) -129 dBu Referenced to +22 dBu input, 150 Ohms input termination, 22 kHz bandwidth measurement, Gain = 66 dB

SAMPLE RATE 32 kHz – 96 kHz

Notes:

1. All specifications are typical for any channel(s).

2. All measurements are made with an AC line of 120 Volts rms / 60 Hz.

3. All measurements are made using 600-ohm balanced loads at 24 dBu full scale unless otherwise stated.

4. All measurements are made in the analog domain with gain/attenuation set for unity unless otherwise stated.

5. All measurements are made using 48 kHz sample rate.

The mic/line-level input processing and acoustic echo canceling card shall be an eight discrete channel device designed to add mic preamps and/or line-level

analog inputs to the NION DSP audio processing node. It shall also allow wideband acoustic echo cancellation to be applied to the mic input or internal audio

input channels. The slide rail support industrial package is designed to easily install in one of the slots provided at the rear of the NION DSP audio processing

node. The connection at the rear of the card shall use a DIN connector. Cards shall be available for mic and line-level analog audio with options for digital and

proprietary audio transports. All card types shall include separate software devices for integration into the conﬁguration ﬁle. The mic/line-level input processing

and acoustic echo canceling card shall be the MediaMatrix NIO-AEC or approved equal.

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