Any person who is suspected of abuse or neglect of a child and who is the subject of an investigation or family assessment pursuant to this chapter may tape record any communications between him and child-protective services personnel that take place during the course of such investigation or family assessment, provided all parties to the conversation are aware the conversation is to be recorded. The parties’ knowledge of the recording shall be demonstrated by a declaration at the beginning of the recorded portion of the conversation that the recording is to be made. If a person who is suspected of abuse or neglect of a child and who is the subject of an investigation or family assessment pursuant to this chapter elects to make a tape recording as provided in this section, the child-protective services personnel may also make such a recording.