发明授权
US07242784B2 Dynamic gain control of audio in a communication device 有权
在通信设备中的音频的动态增益控制

Dynamic gain control of audio in a communication device
摘要:
A method for dynamically controlling audio signal gain in a communication device starts with determining a level of an input audio signal. The level is then mapped against a table of predetermined corresponding gain targets to determine an appropriate gain target for that level. The gain targets are then applied to the audio signal, which is then output. The invention is particularly suited to speakerphone operation in a communication device, wherein the gain targets provide compression, expansion or limiting so that distant speakers can be heard clearly.
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