Abstract: A pitch pattern generation method which enables generation of a stable pitch pattern with high naturalness is provided, a pattern selection part 10 selects N pitch patterns 101 and M pitch patterns 103 for each prosody control unit from pitch patterns stored in a pitch pattern storage part 14 based on language attribute information 100 obtained by analyzing a text and phoneme duration 111, a pattern shape generation part 11 fuses the N selected pitch patterns 101 based on the language attribute information 100 to generate a fused pitch pattern and performs expansion or contraction of the fused pitch pattern in a time axis direction in accordance with the phoneme duration 111 to generate a new pitch pattern 102, an offset control part 12 calculates a statistic amount of offset values from the M selected pitch patterns 103 and deforms the pitch pattern 102 in accordance with the statistic amount to output a pitch pattern 104, and a pattern connection part 13 connects the pitch pattern 104 generated for each pro

Abstract: The present invention allows a low-flow anesthesia method to be executed while hindering temperature increases in a carbon dioxide absorbent, thereby reducing evaporation of water from the carbon dioxide absorbent and the amount of condensation formed in an anesthetic circuit, but without increasing the amount of decomposed compounds.