Abstract: A hearing aid comprises a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber comprises ventilation means for the purpose of increasing the lifespan of the battery.

Abstract: A hearing aid includes a device housing to be worn outside an ear of a user and which co-acts with an in-the-ear part provided with a sound-emitting opening and which is intended and adapted to be received at least substantially in the ear of the user. The in-the-ear part is physically separated from the device housing, wherein at least a microphone and a loudspeaker are accommodated together with the sound-emitting opening in the in-the-ear part. An electronic connection is present between the device housing and the in-the-ear part. A power supply of a hearing aid particularly includes a capacitor (40), more particularly an ultra-capacitor. The functionality of a hearing aid can be expanded with an expansion unit (50). For an accurate fit of the in-the-ear part use is made of a digital representation which has been modified on the basis of fitting data of a fitting body.

Abstract: A hearing aid comprises a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber comprises ventilation means for the purpose of increasing the lifespan of the battery.

Abstract: A hearing aid includes a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber includes ventilation elements for the purpose of increasing the lifespan of the battery.

Abstract: A hearing aid comprises a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber comprises ventilation means for the purpose of increasing the lifespan of the battery.

Abstract: A hearing aid includes a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber includes ventilation elements for the purpose of increasing the lifespan of the battery.

Abstract: A hearing aid comprises a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber comprises ventilation means for the purpose of increasing the lifespan of the battery.

Abstract: A hearing aid includes a device housing to be worn outside an ear of a user and which co-acts with an in-the-ear part provided with a sound-emitting opening and which is intended and adapted to be received at least substantially in the ear of the user. The in-the-ear part is physically separated from the device housing, wherein at least a microphone and a loudspeaker are accommodated together with the sound-emitting opening in the in-the-ear part. An electronic connection is present between the device housing and the in-the-ear part. A power supply of a hearing aid particularly includes a capacitor (40), more particularly an ultra-capacitor. The functionality of a hearing aid can be expanded with an expansion unit (50). For an accurate fit of the in-the-ear part use is made of a digital representation which has been modified on the basis of fitting data of a fitting body.