Wireless sensor networks (WSNs) can be used to record and store audio data at remote and inaccessible places. However, audio data adds an additional concern to the design of the WSN; the motes need a larger amount of memory resources to be able to store the collected data. In this paper, we evaluate the ideas already presented, specifically the EnviroMic, for data collection and storage and apply a realistic power consumption model to estimate the lifetime of an audio sensor network.