System and method for measuring vent effects in a hearing aid
AssigneeOticon A/S
InventorLars Bramslow
Life of this patent
Estimating the term…
Abstract
This invention relates to a system (300) for measuring acoustic properties of a vent (126) in a hearing aid. The system (300) comprises: a microphone (202) converting ambient sound pressure to an electric sound signal; a signal processing unit (302) connected to the microphone (202) and generating a processed electric sound signal; and a speaker (204) converting the processed electric sound signal to a processed sound pressure. In addition, the system comprises a determining means, which is adapted to determine the acoustic properties by measuring the acoustic feedback from the speaker 204 to the microphone (202).
Claims12
A system for measuring acoustic properties of a vent in a hearing aid, and comprising:
- a microphone converting ambient sound pressure to an electric sound signal;
- a signal processing unit connected to said microphone and adapted to process said electric sound signal and to generate a processed electric sound signal;
- and a speaker for converting said processed electric sound signal to a processed sound pressure;
- and wherein said system further comprising determining means adapted to determine said acoustic properties by measuring the acoustic feedback from said speaker to said microphone.
A method for measuring acoustic properties of a vent in a hearing aid, and comprising:
- measuring a first electric signal indicative of a sound pressure presented by a speaker of said hearing aid, measuring a second electric signal indicative of a said sound pressure recorded by a microphone of said hearing aid, estimating said acoustic properties of vent based on a subtraction between said first and second electric signals by a determining means.
Dependencies are inferred from the claim text.