Digital hearing aid
First Claim
Patent Images
1. A hearing aid comprising:
- a housing;
a microphone disposed in said housing;
an earphone disposed in said housing;
digital signal processing means for processing a signal received by said microphone for producing a signal supplied to said earphone for correcting a hearing impairment, said digital signal processing means being connected in said housing between said microphone and said earphone and including a signal converter, an amplifier and a filter stage;
a microphone housing disposed in said housing and surrounding said microphone in said housing said microphone housing comprising a shielding against high-frequency electromagnetic signals; and
an analog digital converter connected between said microphone and said signal processing means and integrated into said microphone housing.
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Accused Products
Abstract
A hearing aid has at least one microphone, a digital signal conditioning stage having a signal converter, an amplifier as well as filters, and an earphone. For protection against emission of electromagnetic waves, an analog-to-digital converter is arranged in the microphone housing.
94 Citations
13 Claims
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1. A hearing aid comprising:
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a housing; a microphone disposed in said housing; an earphone disposed in said housing; digital signal processing means for processing a signal received by said microphone for producing a signal supplied to said earphone for correcting a hearing impairment, said digital signal processing means being connected in said housing between said microphone and said earphone and including a signal converter, an amplifier and a filter stage; a microphone housing disposed in said housing and surrounding said microphone in said housing said microphone housing comprising a shielding against high-frequency electromagnetic signals; and an analog digital converter connected between said microphone and said signal processing means and integrated into said microphone housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A hearing aid comprising:
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a housing; a microphone disposed in said housing; an earphone disposed in said housing; digital signal processing means connected in said housing between said microphone and said earphone and including a signal converter an amplifier and a filter stage; a microphone housing disposed in said housing and surrounding said microphone in said housing; an analog digital converter connected between said microphone and said signal processing means and integrated into said microphone housing; said amplifier and said filter stage of said digital signal processing means forming means for producing digital data words, and wherein said signal converter comprising means for converting said digital data words directly into pulse time modulated signals without re-conversion into analog signals, and said earphone composing means for directly producing an output audio signal from said pulse time modulated signals. - View Dependent Claims (13)
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Specification