Hearing aid pre-selection is performed when the doctor or the fitter has seen the child’s medical history.
The pre-selection phase includes:
1, type of hearing aid
The behind-the-ear hearing aid is suitable for most children. Since the growth of the outer ear of the child is very rapid, it is not recommended to use an in-ear hearing aid.
An osteoconductive hearing aid can be applied when the behind-the-ear hearing aid cannot be applied due to medical or physical limitations and is conductive deafness.
A box-type hearing aid can be applied when there is a physical limitation that the behind-the-ear hearing aid cannot be applied.
2, optional ear for hearing aids
There are many advantages to the choice of hearing aids for children’s ears:
Sound source positioning is good
Loudness sum effect
Reduce the sound insulation of the skull
Subjective factors: good sound quality, fuller, more natural, three-dimensional
Of course, there are also disadvantages:
More cost, more blocking effect, and louder balance
3, hearing aid amplification line
In order to enable young children to hear lighter sounds, a hearing aid with a digital signal processing system should be selected. This hearing aid has flexible electroacoustic characteristics to reduce noise.
Multi-channel hearing aids are applied when the audiogram indicates that different gains and outputs are required in different frequency ranges.
For added flexibility and convenience, multiple listening programs and remote controls can be applied.
Non-linear amplification line: Also called full-dynamic range compression line, the essence is “small sound and more amplification, louder and less amplification”. This line is suitable for patients with sensorineural deafness.
Advantages of 4, all digital hearing aids
Digital processing technology: The sound signal is converted into a digital signal by an analog/digital converter, and amplified to minimize the distortion of the sound.
Multi-channel technology: Digital hearing aids can divide channels according to frequency and perform different amplifications in each channel, especially for patients with a sharp drop in hearing curve.
ADSP (Intelligent Signal Processing): It includes VAD (Environmental Noise Suppression) and TSE (Enhanced Transient Signal).
New mic/inductor system: Omnidirectional and directional microphones collect signals in different directions; microphone noise suppression suppresses noise generated in quiet environments.
Digital feedback control system: The howling of the hearing aid is actually caused by the sound of the feedback being amplified multiple times in the microphone. Digital hearing aids can be tested to find the frequency points that cause acoustic feedback, attenuating these frequency points until the howling disappears and is monitored at all times.
5, other auxiliary equipment
Hearing aids and audio systems should be applied at the same time as young children can move and need to hear the voice of a remote caregiver. The audio system can improve the signal to noise ratio.
Directional microphones are used to improve the sound signal-to-noise ratio of older children when no audio system is applied.
Jinghao medical hearing aid reminder:Hearing aids need to be professionally “fitted”. It is very important to choose a professional hearing aid fitting center and hearing aid fittings! You can call the Jinghao medical for any hearing problems, or you can come to the center to experience the experience. . Hearing aid free consultation phone: +86-18566295705
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Link：What type of hearing aids are children selected?REF: Hearing aids China, ITE hearing aids, Hearing Loss
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