Based on the shape of hearing loss, you can order a suitable vent for your patient. Vents help patients to hear the low frequencies naturally and reduce the fullness feeling from ear mold.<\/p>\n
Vents can have different effects on different frequencies but typically they affect frequencies below the 1000 Hz.<\/p>\n
Here are some types of vents:<\/p>\n
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Parallel vent: Preferred venting style for most application. It modifies receiving low frequencies without any effect on high frequencies.<\/p>\n
Diagonal vent: This kind is used due to physical size limits. But it has some problems such as influence on high frequencies and results in feedback;<\/p>\n
So it should be used with caution for special purposes.<\/p>\n
External vent: It is used when acoustic feedback occurs as a result of traditional venting techniques. It is placed partially down the length of canal and on the body of the mold. It is used when drainage or discharge from the ear is a problem or if there is no space to provide an internal vent inside the canal part.<\/p>\n
Horn\/reverse horn: For achieving natural high frequency as much as possible with least amplification of low frequencies.<\/p>\n
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specification:<\/p>\n