1. A method, comprising: receiving acoustic waveform data representing acoustic signals traversing at least a portion of a borehole adjacent a subterranean formation; performing a direct transform operation on the acoustic waveform data to generate wavelet map data, the wavelet map data comprising a time-frequency representation of the acoustic waveform data; identifying a waveform of interest via the wavelet map data; extracting data associated with the waveform of interest from the wavelet map data; generating filtered wavelet map data based on the extracted data; and performing an inverse transform operation on the filtered wavelet map data to generate filtered acoustic waveform data.