Shopping channels (also known in British English as teleshopping) are a type of television program or specialty channel devoted to home shopping. Their formats typically feature live presentations and demonstrations of products, hosted by on-air presenters and other spokespeople who provide a sales pitch for the product. Viewers are...
Patients with different hearing loss show a wide range of hearing impairments. Increasing the patient's hearing threshold, reducing the dynamic audible range of hearing, abnormal sensitivity to loudness, and reduced speech discrimination are all problems caused by hearing impairment.
How to choose a suitable hearing aid and how to adjust...
Hearing aid type selection
The types of hearing aids mentioned here mainly refer to different classifications according to the appearance of hearing aids, including complete in-ear hearing aids, in-ear hearing aids, in-ear hearing aids, behind-the-ear hearing aids, glasses-type hearing aids, and box-type hearing aids.
There are many factors to consider when...
Frequency-shift hearing aid technology refers to the technology of moving a high-frequency part of a certain bandwidth of a speech signal to a low-frequency part, and is suitable for patients with a high-frequency cochlear dead zone.
4.1 Defects and causes of traditional hearing aids
hearing aid compression technology
1. Auditory dynamic range
The auditory dynamic range refers to the range of sound intensity from the hearing threshold to the discomfort threshold of the human ear.
As shown in Figure 5-5, the hearing threshold of normal people is about lodB, the discomfort threshold is about 100dB,...
Hearing aid acoustic processing technology Hearing aid circuit can be divided into linear hearing aid and non-linear hearing aid based on the input and output characteristics of the amplifier; it can be divided into non-programmable hearing aid and programmable hearing aid according to the adjustment method; it can be...
What is Hearing aid ear molds?
Hearing aids are generally thought of as consisting of a microphone, an amplifier circuit, and a receiver. In fact, hearing aids also have an important component-earmolds. An ear mold is a device that transmits output sound from the earpiece of a hearing aid to...
Complete ear canal hearing aid (CIC hearing aids)
Complete ear canal hearing aid refers to the shape of the patient according to the shape of the patient;: The external ear canal population, a type of hearing aid that stops near the second curve.
3.6.1 Acoustic characteristics of complete hearing aids
In-the-ear hearing aid
Classification of in-the-ear hearing aids
In-the-ear (ITE) hearing aids (see Figure 3-9) are classified into ITE-full shell hearing aids located in the entire ear cavity according to their position in the ear. There are three types of ITE-half shell hearing aids and ITE-low profile hearing aids in some...
Implementation of Open Ear Option
1. Selection of vents
The primary design goal of the open ear option is to help the sound and pressure in the external ear canal find a suitable flow path, reduce blockage, increase air flow, balance internal and external air pressure, and enhance the listening comfort...