Transmission of a wind-reduced signal with reduced latency time

1. A method for generating a transmission signal based on a useful signal disturbed by wind, and being transmitted from a hearing apparatus to a device external thereto, which comprises the steps of:

generating a first and a second microphone signal from a wind-disturbed useful signal in the hearing apparatus;

filtering the first and second microphone signals using a first filter system which has a first latency time, as a result first filter signals are obtained;

determining parameters from the first filter signals, with which a contribution of the wind can be reduced from the first and second microphone signals;

obtaining a wind-disturbed transmission signal from one of the first and second microphone signals or from the first and second microphone signals independently of the first filter signals;

filtering the wind-disturbed transmission signal using a second filter system, which has a shorter latency time compared to the first filter system, as a result of which second filter signals are obtained as a basis for the wind-disturbed transmission signal or the transmission signal; and

applying the parameters to the wind-disturbed transmission signal for reducing a contribution of the wind from the wind-disturbed transmission signal, so that the transmission signal is obtained.

2. The method according to claim 1 , which further comprises applying the parameters to the second filter signals and consequently means that every second filter signal is multiplied by a factor which depends on the parameters.

3. The method according to claim 1 , which further comprises filtering the first and second microphone signals by the second filter system and intermediate signals that initially arise are combined by a beam shaping facility to form the second filter signals.

4. A hearing apparatus for generating a transmission signal based on a useful signal disturbed by wind, and can be transmitted from the hearing apparatus to a device external thereto, the hearing apparatus comprising:

a microphone facility for generating a first and a second microphone signal from a wind-disturbed useful signal in the hearing apparatus;

a first filter system having a first latency time, for filtering the first and second microphone signals, as a result of which first filter signals are obtained;

a processing facility for obtaining a wind-disturbed transmission signal from one of the first and second microphone signals or from the first and second microphone signals independently of the first filter signals;

a second filter system having a shorter latency time compared to said first filter system, for filtering the wind-disturbed transmission signal, as a result of which second filter signals are obtained as a basis for the wind-disturbed transmission signal or the transmission signal; and

a wind noise reduction facility for reducing a contribution of the wind from the wind-disturbed transmission signal, so that the transmission signal is obtained, said wind noise analysis facility determining parameters from the first filter signals, and applies the parameters to the wind-disturbed transmission signal for a reduction of the contribution of the wind.

5. The hearing apparatus according to claim 4 , wherein said first filter system on average has longer filters than said second filter system.

6. A binaural hearing device system, comprising:

a first hearing apparatus for generating a transmission signal based on a useful signal disturbed by wind, and can be transmitted from said first hearing apparatus to a device external from said first hearing apparatus, said first hearing apparatus containing:

a microphone facility for generating a first and a second microphone signal from a wind-disturbed useful signal in said first hearing apparatus;

a first filter system having a first latency time, for filtering the first and second microphone signals, as a result of which first filter signals are obtained;

a processing facility for obtaining a wind-disturbed transmission signal from one of the first and second microphone signals or from the first and second microphone signals independently of the first filter signals;

a second filter system having a shorter latency time compared to said first filter system, for filtering the wind-disturbed transmission signal, as a result of which second filter signals are obtained as a basis for the wind-disturbed transmission signal or the transmission signal;

a wind noise reduction facility for reducing a contribution of the wind from the wind-disturbed transmission signal, so that the transmission signal is obtained, said wind noise analysis facility determining parameters from the first filter signals, and applies the parameters to the wind-disturbed transmission signal for a reduction of the contribution of the wind; and

a second hearing device being said device external to said first hearing aid.

7. A method for generating a transmission signal based on a useful signal disturbed by wind, and being transmitted from a hearing apparatus to a device external thereto, which comprises the steps of:

generating a first and a second microphone signal from a wind-disturbed useful signal in the hearing apparatus;

filtering the first and the second microphone signal to generate first filter signals using a first filter system, the first filter system having a first frequency resolution;

performing a frequency band-wise generation of parameters for reducing a wind contribution in the first filter signals;

filtering at least one of the first and the second microphone signal using a second filter system, the second filter system having a second frequency resolution lower than the first frequency resolution, for obtaining a second filter signal independently of the first filter signals; and

processing the second filter signal by mapping the parameters onto the second filter signal and generating the transmission signal.

8. The method according to claim 7 , which further comprises:

mapping the parameters of a plurality of frequency bands of a first filter signal onto a single frequency band of the second filter signal;

beam forming resulting intermediate signals of the first and the second microphone signal filtered by the second filter system in order to obtain the second filter signal; and

generating a broadband transmission signal from a processed second filter signal.