| 摘要 |
An adaptive speech filter (10) for conditioning speech signals to increase signal to noise ratio in a relatively noisy environment. The adaptive speech filter (10) has a preamp circuit (12), a high pass adaptive filter circuit (14), an output buffer circuit (16), a peak detector amplifier/filter circuit (18), a peak detector circuit (20) and a voltage regulator circuit (22), embodied in an application specific integrated circuit (24). The adaptive speech filter (10) is intended for input to telephones, radios, and the like.
|
