A compact golf accessory which may function as a cigar holder, golf club rest or golf ball retriever. The at least one receiving interface is further configured to receive a mains power connection unit as an alternative to the battery unit. At least one feature value is computed using the plurality of statistical feature values, and a compression-noise estimate may be determined in accordance with a criterion based on a comparison of the at least on feature value and an associated threshold and an additive noise estimate.