In this digital era, everyone uses digital devices to communicate with each other. Wireless technology allows us to wirelessly communicate between a hearing aid and other forms of digital devices. Some hearing devices offer long-range transmission and some offer short range.
A new global Bluetooth standard will connect the listening device with a variety of mobile devices. With the introduction of wireless connectivity in hearing devices, people will be able to connect their hearing aids to a wide range of mobile devices, which have become an essential part of modern life -from MP3 players to TVs and mobile phones.
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Today’s digital wireless protocol allows for wireless communication between hearing aids and from hearing aids to several forms of media devices.
The new methods for wireless connectivity in hearing aids
Following are the various methods that establish wireless connectivity in hearing aids :
Near-field magnetic induction
It is a short-range wireless physical layer which communicates through the tight coupling and also non-propagating magnetic fields between the devices. Transmitter coil in one device modulates magnetic fields and it measured through receiver coil in another device.
The hardware used in NFMI data transmission is well established, making it accessible for all hearing instrument manufacturers.
NFMI operates within a frequency band that easily propagates through and around the human head and body. This ease of propagation allows for ear-to-ear communication between hearing aids, providing the convenience of synchronized adjustments to memory or volume, as well as the benefits of binaural signal processing between hearing aids.
2.4-GHz industrial scientific medical (ISM) band
It is a common worldwide accepted band. ISM bands used with a cordless phone, microwave ovens, medical diathermy machines, military radars as well as an industrial heater. It is the unlicensed band.
The high-frequency nature of the 2.4-GHz band allows signals to propagate easily through the air, experiencing much less degradation of signal strength than with NFMI. For this reason, wireless hearing aid communication in this band allows for long-distance audio streaming, as well as wireless programming.
900-MHz ISM band
The 900-MHz ISM band is a third frequency band used with medical devices for wireless data transmission. This band is helpful for communication between hearing aids. The 900-MHz transmission characteristics allow for long-distance wireless programming, audio streaming, and ear-to-ear binaural processing, without an intermediate relay device.
IRIS—for long distance wireless transmission
It allows long-distance wireless programming, audio streaming as well as an ear to ear binaural processing in the absence of any intermediate relay device. The wavelength of a transmitted signal at 900 MHz is 0.33 meter.
Adaptive Frequency Agility
This technique used in a radio transmission to avoid transmission in channel’s that is already occupied. Thus enable devices to selects more than one frequency channel at frequency 900 MHz as well as reduce the possibility of the damaged communication.
Hearing aids become multi-purpose devices
In the future hearing aids will not only be about sound. The first manufacturers have already started adding health and activity sensors to earbuds, which gives information about their bodies to athletes when they move forward. These new features can help more people to wear hearing aids in the first stage of Hearing Loss, and provide benefits to them, their family, friends, and colleagues.
Features of Modern Hearing Aids
Modern wireless hearing devices offer a variety of benefits.
This technique makes everything comfortable from talking on the phone to watching TV.
Similar to wireless technology, our world is ever more connected. Phones, tablets, computers, televisions and even microphones can now also be accessed via Bluetooth connectivity.
Data logging is a powerful new feature in hearing aids. This device records important information such as the use of hearing aid, time adjustment, and background noise.
Today many hearing aids also come with sophisticated techniques. It can help to reduce the background noise while increasing the volume of speech.
However, This feature can improve communication and reduce frustration for everyone in the conversation.
The ability to customize sound quality and distribute different types of connectivity, personalization and convenience features makes wireless hearing aids a great choice of amplification sound for everyone.
In focus personal and groups communication, hearing care providers have requested wireless systems that do not need intermediate to transmitting devices for media streaming and remote programming. At the same time, the professional said, their patients express joy in the ease of synchronizing memory and volume adjustments, and they value the hearing benefits that binaural signal processing can provide,