Is CROS hearing aid necessary for single-sided hearing loss? What is a CROS hearing aid?

Hearing loss comes in several forms.

Hearing loss can be classified by severity—mild, moderate, or severe—and may affect one or both ears. Single-sided deafness (SSD) refers to severe or complete hearing loss in one ear, while the other ear has normal or near-normal hearing. SSD can have multiple impacts on those affected.

Symptoms and Impacts

  1. Symptoms

  • Hearing from the side with hearing loss is difficult or impossible.

  • Difficulty in determining the direction of sounds (localization).

  • Challenges in listening in noisy environments.

  1. Impacts

  • Difficulty communicating in noisy environments.

  • Stress and fatigue from trying to listen.

  • Potential social and work-related problems due to unclear communication.

Causes of Single-Sided Hearing Loss

Causes of Single-Sided Hearing Loss

  • Inner ear infections

  • Ear injuries or accidents

  • Neurological or genetic conditions

  • Surgery or medical treatments affecting hearing

Currently, there are CROS (Contralateral Routing of Signal) hearing aids specifically designed for individuals with SSD, suitable for both children and adults.

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High-frequency sound waves cannot bend around the head.

What is head shadow effect ?

The Head Shadow Effect is a common phenomenon in individuals with single-sided hearing loss. High-frequency sound waves cannot bend around the head, so when sounds come from the side with hearing loss, they may sound muffled or be completely inaudible. CROS hearing aids help reduce the impact of this effect.

Contralateral Routing of Signal

What is CROS ?

CROS (Contralateral Routing of Signal) is a system that uses hearing aids in both ears to transmit sound signals from the ear with hearing loss to the better-hearing ear.

The hearing aid on the ear with hearing loss is equipped with a microphone and other technologies to detect sound and wirelessly send it to the better-hearing ear. The hearing aid on the better-hearing ear processes the signal and delivers the sound, allowing the user to hear sounds from all directions without needing to turn their head.

Who is a CROS hearing aid suitable for?

CROS (Contralateral Routing of Signal) hearing aids are designed for individuals with asymmetric hearing, particularly those with single-sided hearing loss or a significant difference in hearing ability between the two ears.

Types of CROS Hearing Aids

  1. CROS: Designed for individuals with single-sided hearing loss (one ear is completely deaf). The hearing aid has a microphone on the deaf ear and transmits sound signals to the better-hearing ear.

  2. BiCROS: For individuals with hearing loss in both ears, but one ear hears better than the other. Microphones are placed on both ears, and sound signals from both sides are transmitted to the better-hearing ear.

CROS & BiCROS

How CROS and BiCROS Work

CROS: When sound comes from the deaf ear, it is picked up by the microphone in the CROS hearing aid and wirelessly transmitted to the better-hearing ear. The sound is processed and amplified so the user can hear from both sides.

BiCROS: Works similarly to CROS, but sound signals from both ears are transmitted to the better-hearing ear, processed, and amplified to allow the user to hear clearly from both directions.

Advantages of CROS and BiCROS Hearing Aids:

  • Improves hearing when sounds come from different directions, allowing users to hear from the side with hearing loss.

  • Enhances sound quality by combining audio from both sides, providing clearer and more natural sound.

  • Helps users better localize sound, especially in noisy environments.

Choosing CROS or BiCROS Hearing Aids:
Selection should be guided by an audiologist to evaluate hearing status and individual needs. Hearing aids can be tested and customized for each user. For seniors, choose hearing aids suitable for their level of hearing loss. Free hearing tests and trials for various types of hearing aids—digital, rechargeable, Bluetooth, and in-the-ear—are available at Digibionic hearing aid stores. Contact: 02-1150568.

Let people experience the beauty of hearing aids and hear the sounds of their family’s love once again.
If you wish to share that love with Digibionic, please contact us…

Professional Consultation by Hearing Specialists

Call to schedule a service appointment at 02-115-0568

Expert consultation services are provided to help reduce behaviors that risk hearing loss and to ensure proper ear care. Anyone interested in a hearing test or hearing aids can contact **Digibionic**, with services available at all branches.

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