Method for operating an electroacoustic system and electroacoustic system

An electroacoustic system with an electroacoustic device comprising:

• an earpiece to at least partially occluding an ear canal of an ear;
• an external sound receiver connected to the earpiece and configured to convert an incoming acoustic signal, corresponding to acoustic ambient noises, into an electrical incoming signal;
• an internal sound receiver connected to the earpiece so as to be disposed in the ear canal facing an eardrum of the ear and configured to convert ear canal acoustic noises into electrical signals as a received signal;
• an output sound generator connected to the earpiece and arranged in an area of the internal sound receiver facing the eardrum and configured to convert an electrical outgoing signal into an outgoing acoustic signal;
• a signal processing device configured to process the electrical incoming signal, the signal processing device comprising a correction unit configured to modify the electrical incoming signal, the correction unit comprising a first correction filter of the signal processing device and a second correction filter of the signal processing device, the first correction filter being arranged upstream of the second correction filter, the signal processing device being configured to determine the first correction filter based on a comparison of a total pressure of an external acoustic signal detected within the ear canal at least partially occluded by the earpiece with a target pressure to be expected and to modify the electrical incoming signal with the determined first correction filter to provide a modified incoming signal and to modify the modified incoming signal with the second correction filter to filter out transmission effects, which transmission effects affect acoustic signals in an area from the earpiece to the eardrum on the basis of the at least partial occlusion of the ear canal by means of the electroacoustic device, to provide the electrical outgoing signal to achieve acoustic transparency, in which, on the basis of the outgoing acoustic signal contributing to the ear canal acoustic noises, the received signal is adapted to correspond to a free-ear received signal at the eardrum in the case of a free ear canal without the device.

A method for operating an electroacoustic system, the method comprising:

• providing an electroacoustic device comprising an earpiece at least partially occluding an ear canal of an ear, an external sound receiver connected to the earpiece and configured to convert an incoming acoustic signal, corresponding to acoustic ambient noises, into an electrical incoming signal, an internal sound receiver connected to the earpiece to be disposed in the ear canal facing an eardrum of the ear and configured to convert ear canal acoustic noises into electrical signals as a received signal, an output sound generator connected to the earpiece and arranged in an area of the internal sound receiver facing the eardrum and configured to convert an electrical outgoing signal into an outgoing acoustic signal and a signal processing device configured to process the electrical incoming signal;
• providing the signal processing device with a correction unit configured to modify the electrical incoming signal and comprising a first correction filter and a second correction filter with the first correction filter arranged upstream of the second correction filter;
• with the signal processing device determining the first correction filter based on a comparison of a total pressure of an external acoustic signal detected within the ear canal at least partially occluded by the earpiece with a target pressure to be expected and to modify the electrical incoming signal with the determined first correction filter to provide a modified incoming signal;
• with the signal processing device modifying the modified incoming signal with the second correction filter to filter out transmission effects, which transmission effects affect acoustic signals in an area from the earpiece to the eardrum on the basis of the at least partial occlusion of the ear canal by the earpiece, whereby the processing device provides the electrical outgoing signal to achieve acoustic transparency, in which, on the basis of the outgoing acoustic signal contributing to the ear canal acoustic noises, the received signal is adapted to correspond to a free-ear received signal at the eardrum in the case of a free ear canal without the device.