Metrological Approach to Measurements of Emotions Being Expected in Response to Acoustic Impacts Kseniia Sapozhnikova, Roald Taymanov, Iuliia Baksheeva, Svetlana Kostromina, Daria Gnedykh and Irina Danilova Published online: 18 September 2017 DOI: 10.1051/metrology/201710006