Modem using phase coherence to adapt for missing transmission samples

A modem for sending an output signal to a destination during a communication session, the modem comprising:

• a conversion circuitry, communicatively coupled to the destination, converting samples of a data signal to an output signal;
• a first buffer, communicatively coupled to the conversion circuitry, storing samples of a first signal;
• and
• a second buffer, communicatively coupled to the conversion circuitry, storing samples of a second signal wherein the first buffer supplying the samples of the first signal to the conversion circuitry as the samples of the data signal when the samples of the first signal are valid, the second buffer substituting one or more samples of the samples of the second signal for the samples of the first signal when the first buffer has no valid samples of the first signal.

A modem, operably coupled with a computing device, the modem comprising:

• a conversion circuitry converting samples of a data signal to an output signal;
• a first buffer, communicatively coupled to the conversion circuitry and to the computing device, storing the samples of the data signal;
• a second buffer, communicatively coupled to the conversion circuitry, storing samples of a second signal;
• and
• a control circuitry, coupled to the first buffer and the second buffer, selecting the source of the samples of the data signal between the first buffer and the second buffer wherein the control circuitry selecting the samples from the first buffer when the first buffer contains valid samples of the data signal, and selecting the samples from the second buffer when the samples from the first buffer are not valid.