TOA AN-001T Ambient Noise Controller Module

The TOA AN-001T Ambient Noise Controller Module is a two-channel plug-in module designed to automatically adjust audio output levels as background noise changes. Developed for compatible TOA 9000 Series mixer/amplifiers, the AN-001T helps maintain clear paging announcements and consistent background music levels in commercial environments where ambient noise varies throughout the day.

In busy facilities such as transportation terminals, shopping centers, schools, restaurants, and industrial buildings, background noise can increase or decrease significantly. A fixed-volume paging system may be difficult to hear during busy periods or unnecessarily loud when activity slows down. The AN-001T addresses this challenge by monitoring ambient sound through compatible sensing microphones and adjusting the assigned output level accordingly.

The module provides two independent ambient noise sensing inputs, allowing installers to configure noise compensation for designated outputs. Each input features nine selectable sensitivity settings, from -60 dB to -10 dB, and supports +24V phantom power.

Designed for professional installed sound systems, the AN-001T works with the TOA AN-9001 Ambient Noise Sensor Microphone to provide automatic level control without constant manual adjustment.

TOA AN-001T Key Features

• Two-channel ambient noise control for compatible TOA 9000 Series systems
• Automatic volume compensation based on changing environmental noise levels
• Independent input assignment to designated system outputs
• Nine selectable input sensitivity settings from -60 dB to -10 dB
• +24V phantom power for compatible sensing microphones
• Adjustable sampling intervals from 10 seconds to 5 minutes
• 14 selectable gain ratios for configuring ambient noise compensation
• 24-bit A/D conversion with 48 kHz sampling frequency
• Electronically balanced sensor inputs with removable terminal blocks
• Compact plug-in design for installation inside compatible TOA equipment
• Supports up to two AN-001T modules per chassis
• Designed for use with the TOA AN-9001 ambient noise sensor microphone

Automatic Volume Adjustment for Changing Noise Levels

The TOA AN-001T helps commercial paging and background music systems respond to changes in surrounding noise.

When environmental noise increases, the module can raise the assigned output level to help maintain audibility. As background noise decreases, the system can reduce the output level to avoid unnecessarily loud announcements or music.

Installers can configure the module's gain ratio, sensing reference level, and sampling interval to match the acoustic conditions of the installation.

This makes the AN-001T particularly useful in facilities where crowd activity, machinery, or daily operating schedules cause frequent changes in ambient noise.

Two-Channel Ambient Noise Sensing

The AN-001T includes two electronically balanced sensing inputs, each designed to work with a compatible ambient noise sensor microphone.

Each input can be assigned to control a designated output within the host system, providing flexibility for installations with different noise conditions.

The module also offers adjustable input sensitivity and configurable output level limits to help installers achieve appropriate compensation without excessive changes in volume.

Compatible TOA Equipment

The AN-001T is designed for supported TOA 9000 Series mixer/amplifiers and digital mixers, including:

• TOA A-9060DHM2
• TOA A-9060SM2
• TOA A-9120DHM2
• TOA A-9120SM2
• TOA A-9240SHM2
• TOA M-9000M2

Compatibility should be confirmed for the specific system configuration before ordering.

Ideal Applications

• Airports and transportation terminals
• Shopping centers and retail facilities
• Schools, cafeterias, and common areas
• Restaurants and hospitality venues
• Warehouses and manufacturing facilities
• Hospitals and healthcare facilities
• Convention centers and public buildings
• Commercial paging and background music installations

TOA AN-001T Technical Specifications

Specification	Details
Model	AN-001T
Product type	Ambient Noise Control Module
Channels	2 ambient noise sensor inputs
Compatible systems	Supported TOA 9000 Series mixer/amplifiers
Input type	Electronically balanced
Input impedance	3 kΩ (phantom ON), 10 kΩ (phantom OFF)
Input sensitivity	-60, -54, -48, -42, -36, -30, -24, -18, -10 dB
Phantom power	+24V DC
A/D converter	24-bit
Sampling frequency	48 kHz
Maximum output level setting	-15 to 0 dB
Minimum output level setting	-18 to -3 dB
Sampling intervals	10, 15, 20, 30 seconds; 1, 2, 3, 5 minutes
Gain ratio settings	14 selectable settings
Input connectors	Two removable 3-pin terminal blocks
Power supply	Supplied by compatible host equipment
Operating temperature	14°F to 104°F (-10°C to 40°C)
Dimensions	35 × 78 × 91.5 mm (W × H × D)
Weight	82 g (2.9 oz)
Panel finish	Hairline aluminum
Maximum modules	2 per chassis
Included accessories	Two 3-pin terminal plugs and two mounting screws
Compatible sensor microphone	TOA AN-9001

Why Buy the TOA AN-001T from Audio Supply?

Audio Supply provides professional TOA paging and installed sound equipment for commercial audio contractors and integrators. We can help you confirm compatibility with your TOA 9000 Series system and identify the sensing microphones needed for your installation.

Need a Compatible Ambient Noise Sensor Microphone?

The TOA AN-9001 Ambient Noise Sensor Microphone is designed for use with the AN-001T module. It provides the ambient noise sensing needed for automatic volume compensation in compatible TOA 9000 Series systems.

Contact Audio Supply for assistance selecting the AN-9001 and configuring your TOA ambient noise control system.