Selection and removal of acoustic baseline signal for enhanced cement bond evaluation

A system comprising:

• an acoustic logging tool, wherein the acoustic logging tool comprises:
• at least one transmitter, wherein the at least one transmitter is configured to broadcast a shaped signal such that the shaped signal interacts with a boundary of a casing and a material;
• and
• at least one receiver, wherein the at least one receiver is configured to record a result signal from the boundary of the casing and the material with the receiver;
• a conveyance, wherein the conveyance is attached to the acoustic logging tool;
• and
• an information handling system communicatively connected to the acoustic logging tool, wherein the information handling system is configured to:
• select a baseline signal to be subtracted from the result signal;
• subtract the baseline signal from the result signal to yield a subtracted signal;
• and
• determine a bonding condition associated with the material based on the subtracted signal by generating a log from the result signal, wherein the bonding condition comprises free pipe, partially bonded, or fully bonded.