Automatic control system for acoustic logging
Номер патента: CA1222046A
Опубликовано: 19-05-1987
Автор(ы): Clyde O. Macdonald
Принадлежит: Halliburton Co
Опубликовано: 19-05-1987
Автор(ы): Clyde O. Macdonald
Принадлежит: Halliburton Co
Реферат: AUTOMATIC CONTROL SYSTEM FOR ACOUSTIC LOGGING Abstract of the Disclosure A circuit is disclosed for use in an acoustic logging tool incorporating a transmitter sending an acoustic pulse which is received by acoustic receivers. In the preferred and illustrated embodiment hereof, an automatic gain control (AGC) circuit controls the receiver amplification to enable the output range to be limited for input to a digital graphic recorder, typically having a limited number of output signal levels, coordinating with data processing equipment. The AGC times the peak operation to thereby limit the dynamic range.
Method for automatically controlling loudness of an audio signal, and device for automatically controlling loudness of an audio signal
Номер патента: EP4393058A1. Автор: Sofia Checa,Lorenz Bucher,Johannes Heinrich Kares. Владелец: Sennheiser Electronic GmbH and Co KG. Дата публикации: 2024-07-03.