Patent ID: 8060361
Filing Date: 2011-11-15
Classification: G10L,H04M

Abstract:
1. A communication device with an audio modulation function, the communication device comprising: an antenna, a RF transceiver, a codec, and a control unit connected in series, a first Digital-to-analog (D/A) converter and a sound output unit, a microphone, a first analog-to-Digital (A/D) converter, a memory, an audio analysis unit, a frequency-adjusting unit and a switch, wherein: the codec, the first D/A converter and the sound output unit is connected in series; the first A/D converter is connect with the codec; the switch is controlled to either connect the microphone with the first A/D converter or to connect the microphone with the frequency-adjusting unit; the memory is connected with the control unit; the audio analysis unit is connected with the codec and the control unit, the audio analysis unit analyzes digital audio signals of a caller, from the codec, to obtain a voice frequency of the caller, obtains a voice frequency of a user from the memory, and calculates the rate of the voice frequencies between the caller and the user; and the frequency-adjusting unit is connected with the control unit and the first A/D converter, the frequency-adjusting unit modulates audio signals from the microphone according to the rate of the voice frequencies between the caller and the user after the switch is switch to connect the microphone with the frequency-adjusting unit; the first A/D converter converts the audio signals into digital audio signals; the codec codes the digital audio signals and the RF transceiver modulates the coded digital audio signals and transmits the modulated audio signals to the caller through the antenna.