Telecoil in Hearing Aids - What Is It & Do You Need One?

If you have been researching hearing aids, you may have come across the term "telecoil" or "T-coil." This feature has been around for decades, yet many hearing aid users in Pakistan have never heard of it. Understanding telecoils can help you make a more informed purchasing decision.

How Does a Telecoil Work?

A telecoil is a tiny coil of wire that detects electromagnetic fields. When you switch your hearing aid to "T" mode, it picks up electromagnetic signals instead of sound from the microphone. It works like a wireless receiver built into your hearing aid, bypassing background noise entirely because it only detects the electromagnetic signal, not acoustic sound waves.

Where Can You Use a Telecoil?

Landline Telephones

Many landline phones generate an electromagnetic field from their earpiece. Hold a telecoil-equipped hearing aid near the phone and it picks up the signal directly, providing clearer calls without background noise.

Hearing Loop Systems

Wire loops installed in rooms generate electromagnetic fields covering the entire area. Common in places of worship, theaters, airports, and banks in Western countries. Any hearing aid with a telecoil picks up the loop audio.

Personal Loop Systems

Portable neck loops connect to phones or TVs via Bluetooth and create a personal electromagnetic field. Your telecoil hearing aid picks up this signal - a cost-effective alternative to built-in Bluetooth hearing aids.

Telecoil vs Bluetooth

• Telecoil: Uses electromagnetic induction. No battery drain from pairing. Works with loops and compatible phones. Lower audio quality than Bluetooth. Available in many models including affordable ones.
• Bluetooth: Digital wireless. Uses more battery. Direct smartphone streaming. Higher quality. Available in premium models.
• Both: Some premium Signia hearing aids include both telecoil and Bluetooth for maximum connectivity.

Which Signia Models Have Telecoils?

• BTE hearing aids: Most include telecoils due to larger size. From Rs. 35,000.
• RIC hearing aids: Many mid-range and premium models include telecoils. From Rs. 85,000.
• CIC/IIC: Too small for telecoils in most cases - a trade-off of invisible hearing aids.

Do You Need a Telecoil in Pakistan?

For most users in Pakistan today, a telecoil is "nice to have" rather than essential:

• Use a landline phone regularly - telecoil helps
• Travel internationally to loop-equipped countries - very useful
• Want budget-friendly alternative to Bluetooth for phone use - consider telecoil with neck loop
• Only use mobile phone and stay in Pakistan - Bluetooth or regular use is sufficient

When a telecoil is available in a model you are already considering, we always recommend including it because it adds functionality at no extra cost. Our audiologists can help you determine whether this feature matters for your specific needs.