Method of an electronic device for filtering interference

A method of operating an electronic device, the electronic device including a receiver configured to receive a wireless analog signal, a converter configured to convert the received analog signal to a digital input signal, a signal processor configured to generate a digital output signal from the digital input signal;

• and a transmitter configured to transmit the digital output signal as a wireless digital signal, wherein the signal processor and/or the transmitter cause a noise signal in the digital input signal, which is synchronized or correlated with a repetition rate of the wireless digital signal, the method comprising:
• generating the digital output signal by filtering the digital input signal, wherein the filtering comprises filtering the digital input signal such that the noise signal is reduced if the noise signal is caused by the signal processor, and if the noise signal is caused by the transmitter, and if the noise signal is caused by the signal processor and the transmitter,
• wherein the wireless digital signal includes an audio streaming signal with a first periodicity, and a data connection signal with a second periodicity, and the noise signal includes a corresponding audio streaming noise and data connection noise,
• wherein the filtering comprises:
• dividing the digital input signal into a number of time samples;
• applying, for each time sample, a low pass filter that removes a corresponding noise component in said time sample;
• and
• combining, after the applying, the time samples to the digital output signal, and
• wherein the number of time samples is the product of a periodicity of the noise signal and a sample rate of the receiver.