Abstract: A frequency-shifting system and method for cement-bond-logging tools is disclosed. Shifting the frequency of a received acoustic signal to a lower signal for transmission on a wireline is accomplished by digitizing the received signal at a first sampling rate, storing the digitized data in memory, and converting the digitized data to an analog signal at a second sampling rate. The digitizing sampling rate is higher than the conversion sampling rate. This allows an acoustic operating frequency that is greater than the wireline transmission frequency, and therefore allow signal-to-noise optimization not available in conventional systems. Acoustic transducers can be operated at higher frequencies than what is acceptable for wireline transmission. This allows for the use of transducers not conventionally used in the art (such as piezoelectric stacks).