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(11) | EP 2 259 605 A8 |
(12) | CORRECTED EUROPEAN PATENT APPLICATION |
published in accordance with Art. 153(4) EPC |
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(54) | HEARING AID |
(57) This hearing aid comprises a microphone (1) for collecting sounds, an A/D converter
(2) for converting an analog signal outputted from the microphone (1) into a digital
signal, a hearing aid processor (3) for performing hearing aid processing on the digital
signal outputted from the A/D converter (2), a D/A converter (4) for converting the
signal that has undergone the hearing aid processing into an analog signal, and a
receiver (5) for outputting the analog signal outputted from the D/A converter (4)
as an acoustic signal to the surroundings. A mixer (6), in which a first input is
connected to the output of the hearing aid processor (3) and its own output is connected
to the input of the D/A converter (4), is interposed between the hearing aid processor
(3) and the D/A converter (4). The output signal of an alert sound shaper (8) that
shapes the alert sound signal produced by an alert sound producer (7) is connected
to a second input of the mixer (6). The mixer (6) is connected to a controller (9)
that produces a mix ratio signal for mixing the output signals of the hearing aid
processor (3) and the alert sound shaper (8).
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