A method of denoising imaging signals detected in the presence of broadband noise, the method comprising: in the absence of receiving imaging energy, detecting energy waves with an imaging transducer receive circuit, thereby obtaining a noise characterization waveform, and filtering the noise characterization waveform to generate an in-band noise characterization waveform residing within an imaging frequency band and an out-of-band noise characterization waveform residing within a noise-detection band that lies, at least in part, beyond the imaging band; segmenting the in-band noise characterization waveform and the out-of-band noise characterization waveform according to a plurality of time windows; for at least one time window, processing the in-band noise characterization waveform and the out-of-band noise characterization waveform to determine a relationship between noise in the imaging band and noise in the noise-detection band; detecting imaging signals with the imaging transducer receive circuit thereby obtaining one or more imaging waveforms; for at least one imaging waveform: a) filtering the imaging waveform to generate an in-band imaging waveform residing within the imaging band and an out-of-band noise-detection imaging waveform residing within the noise-detection band; b) segmenting the in-band imaging waveform and the out-of-band noise-detection imaging waveform according to a plurality of time windows; c) employing the relationship and the out-of-band noise-detection imaging waveform to estimate, within at least one time window, a measure associated with the amount of noise in the in-band imaging waveform; and d) for at least one time window processed in c), applying a denoising correction to the portion of the in-band imaging waveform within the time window. in the absence of receiving imaging energy, detecting energy waves with an imaging transducer receive circuit, thereby obtaining a noise characterization waveform, and filtering the noise characterization waveform to generate an in-band noise characterization waveform residing within an imaging frequency band and an out-of-band noise characterization waveform residing within a noise-detection band that lies, at least in part, beyond the imaging band; segmenting the in-band noise characterization waveform and the out-of-band noise characterization waveform according to a plurality of time windows; for at least one time window, processing the in-band noise characterization waveform and the out-of-band noise characterization waveform to determine a relationship between noise in the imaging band and noise in the noise-detection band; detecting imaging signals with the imaging transducer receive circuit thereby obtaining one or more imaging waveforms; for at least one imaging waveform: a) filtering the imaging waveform to generate an in-band imaging waveform residing within the imaging band and an out-of-band noise-detection imaging waveform residing within the noise-detection band; b) segmenting the in-band imaging waveform and the out-of-band noise-detection imaging waveform according to a plurality of time windows; c) employing the relationship and the out-of-band noise-detection imaging waveform to estimate, within at least one time window, a measure associated with the amount of noise in the in-band imaging waveform; and d) for at least one time window processed in c), applying a denoising correction to the portion of the in-band imaging waveform within the time window. a) filtering the imaging waveform to generate an in-band imaging waveform residing within the imaging band and an out-of-band noise-detection imaging waveform residing within the noise-detection band; b) segmenting the in-band imaging waveform and the out-of-band noise-detection imaging waveform according to a plurality of time windows; c) employing the relationship and the out-of-band noise-detection imaging waveform to estimate, within at least one time window, a measure associated with the amount of noise in the in-band imaging waveform; and d) for at least one time window processed in c), applying a denoising correction to the portion of the in-band imaging waveform within the time window.