Hearing aids are technological marvels that enable people with hearing loss to regain optimal function in everyday life. One of the most unobtrusive types of hearing aids is the Completely-in-Canal (CIC) device. This type of hearing aid is small and is worn completely inside the ear canal, making it virtually invisible. Despite its small size, it offers advanced technology that delivers excellent sound quality. In this blog, we take an in-depth look at the different components of a CIC hearing aid and how they work together to improve hearing.<\/p>\n\n
A Completely-in-Canal hearing aid is one of the smallest hearing aids on the market. As the name implies, it is placed completely inside the ear canal. This makes it discreet and virtually invisible to others. CIC hearing aids are suitable for people with mild to moderately severe hearing loss. They are popular not only for their invisibility, but also for the natural sound quality they provide due to their proximity to the eardrum.<\/p>\n\n
Despite its small size, a CIC hearing aid consists of several essential components that work together to capture, amplify and play back sounds. Below we discuss these components in detail.<\/p>\n\n
Microphone<\/strong><\/p>\n\n The microphone is the part that picks up sounds from the environment. CIC hearing aids usually have one or two microphones. More advanced models feature directional microphones, which can focus on specific sounds, such as speech, while reducing background noise. This helps the user better focus on conversations in noisy environments.<\/p>\n\n Amplifier<\/strong><\/p>\n\n The amplifier is a crucial part of the hearing aid. After the microphone picks up the sound, this signal is sent to the amplifier. The amplifier analyzes and amplifies sound signals. Modern CIC hearing aids are equipped with digital signal processing (DSP) technology, which allows specific frequencies to be amplified more or less depending on the user\u2019s hearing loss. This makes amplification personal and optimally tailored to the user\u2019s needs.<\/p>\n\n Sound processor<\/strong><\/p>\n\n The sound processor works closely with the amplifier. It receives the digital signal from the microphone and applies various algorithms to optimize the sound. This includes noise reduction, feedback cancellation and sometimes even speech recognition. The sound processor is able to analyze the various sounds in the environment and prioritize important sounds, such as speech.<\/p>\n\n Speaker (Receiver)<\/strong><\/p>\n\n The speaker, also called the receiver, converts the amplified sound into acoustic energy that is perceived by the eardrum. Because the speaker is located close to the eardrum, this produces a very natural sound quality. In CIC hearing aids, the speaker is often the part most subject to wear and tear because it is constantly exposed to earwax and moisture.<\/p>\n\n Battery<\/strong><\/p>\n\n Because of the limited space in a CIC hearing aid, small batteries, usually type 10 zinc-air batteries, are used. These batteries have a short lifespan of about 3 to 7 days, depending on hearing aid use and settings. Some newer models are equipped with rechargeable batteries, which is a big step forward in ease of use.<\/p>\n\n Earpiece (Shell)<\/strong><\/p>\n\n The earpiece, also known as the housing, is the outer part of the hearing aid that is completely customized to fit precisely in the user\u2019s ear canal. It is made of hypoallergenic material to prevent irritation and ensures that the hearing aid remains comfortable and secure in the ear canal.<\/p>\n\n Ventilation duct (Vent)<\/strong><\/p>\n\n Although CIC hearing aids are designed to be as compact as possible, they usually have a small ventilation channel to reduce the so-called \u201cocclusion effect,\u201d in which the user experiences their own voice as loud and dull. This ventilation channel provides a small airflow into the ear canal, which helps to make the sound more natural and increase wearing comfort.<\/p>\n\n Program button or Wireless Control<\/strong><\/p>\n\n Despite their small size, some CIC hearing aids have a thumbnail button to switch between different listening programs. Other modern CIC hearing aids are controlled wirelessly via a smartphone app, allowing users to easily adjust their hearing aid without removing it from the ear.<\/p>\n\n Now that we\u2019ve discussed the different parts, it\u2019s time to understand how they work together to improve hearing.<\/p>\n\n Sound Transmission<\/strong><\/p>\n\n Sounds are picked up by the microphone(s) on the front of the hearing aid. These sounds can come from various sources, such as conversations, music or environmental sounds.<\/p>\n\n Reinforcement and Processing<\/strong><\/p>\n\n The captured sounds are converted into digital signals and then sent to the amplifier and sound processor. Here the sounds are analyzed and adjusted based on the user\u2019s set audiograms. Modern CIC hearing aids are capable of automatically adjusting amplification to different environments, such as a quiet room or a busy street.<\/p>\n\n Amplified Sound Output<\/strong><\/p>\n\n After the sound is amplified and optimized, it is sent through the speaker to the eardrum. Because the speaker is so close to the eardrum, the sound reproduction is extremely clear and precise, providing a natural listening experience.<\/p>\n\n\n
\n
\n
\n
\n
\n
\n
\n
How Does a CIC Hearing Aid Work?<\/h2>\n\n
<\/ol>\n\n
<\/ol>\n\n