A method and apparatus for generating dual tome multiple frequency signals employing a low fre­quency quartz oscillator, wherein a phase accumula­tion dual tone multiple frequency generator is com­prised of a low frequency quartz oscillator. Two phase selectors are connected to produce digital phase signals in response to a signal input. Two phase accumulators, each composed of an adder and a register, are connected to accumulate the phase sig­nals. Two ROM based sine wave tables are addressed by the outputs of the accumulators. An adder adds the outputs of the ROMs, and a D/A converter pro­duces an analog output from the output of the adder.