Voice with image productions can enhance the clarity and specificity of the feedback message. Voki, a talking avatar, can provide a less threatening response than one in which the instructor is the talking head. Tellagami uses animation to present the selected summary, explanation, or redirection

Tools such as Audacity and Garage Band, or mobile device tools such as iTalk, can record an audio clip, embed a static image, and be presented as an mP3 file when uploaded to the LMS or another hosting site such as Soundcloud or AudioBoom.