PURPOSE: To obtain a device capable of enjoying a television(TV) or the like while having a conversation even in the use of an auxiliary hearing device.
CONSTITUTION: Sound information from a TV or the like is inputted from an audio input terminal 5, and normally the sound is amplified and outputted from a headphone 10. If sound information with large sound volume such as a call is inputted from a microphone 1, a level judging circuit 11 is driven and a relay contact 12 is switched, so that the multiplier of a muplifying circuit 3 and the divisor of a dividing circuit 7 are simultaneously changed in the increasing direction. The input sound from the microphone 1 is amplified relatively larger than the sound of the TV or the like and outputted from the headphone 10. Consequently a trouble concentrating a sound field not having a sense of presence which includes noises or the like into ears can be removed and sound information from the microphone 1 can be listened only when it is really required.
| WO/2022/015427 | AUDIO SYSTEM USING INDIVIDUALIZED SOUND PROFILES |
| WO/2007/081672 | NON-DIRECTIONAL SEMI-DIFFUSE TRANSDUCER |
| WO/2005/096156 | METHOD AND SYSTEM FOR PROTECTING CONTENT IN A PROGRAMMABLE SYSTEM |
TOYAMA HIROSHI
KUMAGAI YUKIO
NENE YOSHITO
