Noise detecting method and apparatus, electronic device, and computer readable storage medium

A noise detecting apparatus, comprising:

• a memory, a processor, and a computer program stored on the memory and operable on the processor,
• wherein the processor, when running the computer program, is configured to:
• obtain a noise of each sensing electrode of a plurality of sensing electrodes of a touch screen at a current operating frequency point during an operation of the touch screen;
• calculate, for each sensing electrode respectively, a difference between the noise of the sensing electrode and a current noise reference of the sensing electrode, to obtain a noise difference of the sensing electrode;
• perform, for each sensing electrode respectively, differential processing on the noise difference of the sensing electrode and a noise difference of an adjacent sensing electrode of the sensing electrode, to obtain a first processing result comprising a plurality of values, and compare a maximum value of the first processing result with a preset first threshold;
• and
• determine that there is noise interference at the current operating frequency point if the maximum value is greater than the preset first threshold.