| 摘要 |
PURPOSE: A multiple analog recording and playback system is provided to combine a fully integrated programmable signal interface with a highly configurable voice path in order to maximize flexibility and ease system integration with all wireless and cordless chip sets. CONSTITUTION: An analog recording and playback system provides a variety of analog processing functions to enhance system level integration. The analog recording and playback system is a fully configurable integrated device that includes a plurality of signal paths, a microphone automatic gain control(AGC) circuit, volume control and filtering circuit, speaker driver circuit, gain selectable analog input, auxiliary input and output paths, configurable summation amplifiers having mixing features, multilevel analog memory storage array, and user selectable programming duration.
|
