| 摘要 |
PURPOSE: The recording device for telephones is provided to record and regenerate desired voice information using a recorder attached in the telephone receiver in telephone conversation with simple key operations. CONSTITUTION: The recording device for telephones consists of a signal detection part(10), a signal amplification part(20), a memory part(30), a signal output part(40) and a selection switching part(50). The signal detection part(10) detects a magnetized sound received from a transmitting side in telephone conversation. The signal amplification part(20) amplifies the detected magnetized sound signal into an audio frequency. The memory part(30) stores the signal amplified from the signal amplification part(20) for a given time. The signal output part(40) outputs the signal stored in the memory part(30) through a speaker. The selection switching part(50) makes the signal stored in the memory(30) by a switching operation or makes the stored signal regenerated.
|
