How To Check if a Hearing Loop is Working

A hearing loop, or an induction loop system, is an assistive listening technology designed to enhance sound quality for individuals with hearing aids or cochlear implants.

A hearing loop transmits audio signals directly to the telecoil (or ‘T’ setting). This direct transmission reduces background noise and reverberation, allowing users to hear more clearly in theatres, churches, conference rooms, and public spaces.

Hearing Loop’s state-of-the-art induction loop systems provide a seamless listening experience and make environments more accessible for people with hearing impairments. Our technology bridges the gap between sound sources and hearing aids, ensuring crystal-clear audio transmission that transforms how people engage in public spaces.

Why Regular Checks Matter

Regularly checking the functionality of a hearing loop system is essential to ensure it continues to provide optimal assistance.

A malfunctioning system can lead to frustration and exclusion for users who rely on it for clear communication. Routine inspections help maintain the system’s performance, ensuring all users have equal access to information and can fully participate in events or activities.

By keeping the system in top condition, you’re promoting inclusivity and upholding accessibility standards.

Start with a Visual Inspection

Performing a visual inspection is the first step in assessing whether your hearing loop system is operating correctly. This quick check can help identify apparent issues that might be affecting performance.

Examine the Loop Driver

Look for Error Indicators:

• Inspect the front panel of the loop driver for any error lights or warning signs.
• Error indicators might include flashing lights, colour changes, or displayed error codes.

Check for Physical Damage:

• Examine the device for any wear, cracks, or damage that could impact functionality.

Check All Connections

Ensure Secure Cables:

• Verify that all cables are correctly connected and securely fastened.
• Pay attention to input and output connections, speaker wires, and linked devices.

Inspect Cable Conditions:

• Look for frayed wires, loose plugs, or damaged connectors.
• Replace any faulty cables to prevent signal loss or interference.

Power Status

Confirm Power Supply:

• Make sure the equipment is plugged into a working power outlet.
• Check that any power switches are turned on.

Observe Operational Indicators:

• Look for lights or displays that indicate the system is receiving power.
• Absence of power indicators might suggest an issue with the power source or internal components.

Perform a Basic Functionality Test

Conducting a basic functionality test helps determine if the hearing loop system is transmitting sound effectively. This test uses a loop listener or receiver to detect the loop signal and assess audio quality.

Use a Loop Listener or Receiver

What Is a Loop Listener?

• A loop listener or receiver is a small electronic device with a built-in telecoil. It simulates how a hearing aid receives signals from a hearing loop system.

Purpose of the Device

• It allows individuals without hearing aids to test the loop system’s functionality.

Testing Steps

Prepare the Loop Listener

• Volume Setting: Keep the loop listener’s volume minimum to prevent sudden loud noises.
• Headphones: Plug a pair of headphones into the loop listener.
• Confirm that the loop listener or receiver has fresh batteries.
• Low battery power can result in weak signal detection and inaccurate testing results.

Position the Listener

• Height Placement: Hold or place the loop listener at seated head height, approximately 4 feet above the floor.
• Location: Stand within the area where the loop signal should be.

Activate the Sound Source

• Ensure Audio Is Playing: Confirm that a microphone is being used or audio is playing through a connected device.

Increase the Volume Gradually

• Adjust Volume: Slowly increase the volume on the loop listener.
• Listen Carefully: Listen for clear audio through the headphones as you adjust the volume.

Expected Results

Clear Sound Reception:

• You should hear clear and undistorted sound through the headphones if the system works properly.

No Sound or Poor Quality:

• If you don’t hear any sound or it’s distorted, further investigation is needed to identify potential issues.

Conduct a Sound Quality Check

Assessing the sound quality ensures that the hearing loop system provides an optimal listening experience without distortions or inconsistencies.

Listen for Distortion

High-Frequency Sounds:

• Pay special attention to high frequencies, as distortion often begins in these ranges.

Audio Clarity:

Listen for any buzzing, humming, or static indicating interference or equipment issues.

Check Signal Consistency

Move Throughout the Room:

• Walk around the looped area with the loop listener or your hearing aid set to the ‘T’ setting.

Monitor Volume Levels:

• Observe any changes in volume or sound quality in different locations.

Compliance with Standards

IEC 60118-4 Guidelines:

• The International Electrotechnical Commission (IEC) standard 60118-4 states that sound levels should not vary more than ±3 decibels (dB) throughout the room.

Importance of Compliance:

• Consistent sound levels ensure all users receive the same quality of service, regardless of their position within the looped area.

How to Measure:

Use the loop listener to check for level variations and identify any ‘dead spots’ where the signal may weaken.

Test Using Hearing Aids

Testing the hearing loop system using hearing aids provides a real-world assessment of its effectiveness. This step is crucial for ensuring that end-users experience optimal sound quality.

For Hearing Aid Users

Switch to the ‘T’ Setting:

Adjust your hearing aid to the ‘T’ (telecoil) setting, designed to receive signals directly from a hearing loop system.

Prepare for Testing:

Ensure your hearing aid functions correctly and the telecoil feature is activated.

Assess the Signal

Move Around the Looped Area:

• Walk through the entire area covered by the hearing loop system.

Check for Consistent Signal Strength:

• Listen for any fluctuations in volume or clarity.
• Note any spots where the signal weakens or drops out completely.

Evaluate Sound Clarity:

Pay attention to any distortion or background noise affecting the listening experience.

Additional Checks

After completing the primary tests, perform these additional checks to ensure all aspects of the hearing loop system function correctly.

Volume Controls

Verify Gain Settings:

• Ensure all volume (gain) controls on the loop driver and connected devices are set appropriately.
• Avoid setting the volume too high, which can cause distortion or too low, making the signal inaudible.

Battery Status

Ensure Charged Batteries:

• For a portable hearing loop that requires batteries, c ensure that the battery is fully charged.
• Low battery power can result in weak signal generation and inaccurate testing results.

Microphone Input Test

Test Microphone Functionality:

• Speak directly into the microphone connected to the hearing loop system.

Assess Audio Transmission:

• Listen through the loop listener or your hearing aid to ensure your voice is transmitted clearly without distortion.

Multimedia Sources

Play Audio Content:

• Use connected devices like computers, tablets, or music players to play audio through the system.

Verify Proper Integration:

• Ensure that the audio from these sources is correctly transmitted through the hearing loop.
• Check for any issues with sound quality or connectivity.

 

Professional Testing and Maintenance

Regular professional testing and maintenance are crucial for your hearing loop system’s longevity and optimal performance. Professionals have the expertise and equipment to detect issues that are not apparent during basic checks.

Advanced Testing Equipment

Precise Measurements:

• Utilise a calibrated field strength measurement device like the Induction Loop Test Meter for accurate readings.
• These devices measure the loop system’s magnetic field strength,frequency response, background and system noise

Benefits of Advanced Equipment:

• Provides detailed insights into system performance.
• Helps identify subtle issues affecting sound quality.

Regular Professional Checks

Scheduled Inspections:

• Schedule professional inspections at least once or twice a year.
• Regular checks ensure the system remains compliant with industry standards.

Specialised Equipment:

• Professionals may use devices like the Ampetronic R115 for comprehensive system analysis.
• These tools can diagnose problems that standard equipment might miss.

When to Seek Help

Persistent Issues:

• If you experience ongoing problems despite performing basic checks, it’s time to consult a professional.

Expert Assistance:

• A professional loop installation company can provide repairs, adjustments, and recommendations.
• They can ensure your system delivers the best possible experience for users.

Ensure Proper Signage

Signage plays a vital role in effectively using a hearing loop system. It informs potential users of the system’s availability and guides them on accessing it.

Visibility Matters

Display Clear Signs:

• Place signs prominently at entrances and within the looped area.
• Use universally recognised symbols for hearing assistance.

Consistency:

• Ensure signage is consistent throughout the facility to avoid confusion.
• Include instructions if necessary, such as switching hearing aids to the ‘T’ setting.

Why Signage Is Important

User Awareness:

• The hearing loop system is invisible and inaudible to those not using it.
• Signage alerts hearing aid users to the presence of the system so they can benefit from it.

Promoting Accessibility:

• Proper signage demonstrates a commitment to inclusivity.
• It helps fulfil legal obligations related to accessibility in public spaces.

Final Thoughts

Keeping your hearing loop system in good working order enhances the experience for hearing aid users and fosters an inclusive environment.

Regular maintenance and attentiveness to the system’s functionality ensure everyone can fully participate in events and activities without barriers.

An effective hearing loop system is more than just equipment—it’s a bridge to better communication and a testament to thoughtful accessibility.

Ready to enhance your venue’s accessibility? Contact Hearing Loop today at 0114 235 7717 to discuss your induction loop needs or schedule a maintenance check. Our expert team ensures your system delivers optimal performance for every user.