Nippon Telegraph and Telephone Corporation

Ginga Kawaguchi

Hideki Ogawa

Hitoshi Aoki

Kanako Sato

Atsuko Kurashima

A quality evaluation apparatus includes: a recording unit configured to record information indicating a state of a web browser in a storage unit at a plurality of timings; and a count unit configured to count the number of times reload operation is performed as an evaluation value of quality experienced by a user with reference to the storage unit, so that validity of the evaluation of experienced quality of web browsing is improved.

Quality evaluation apparatus, quality evaluation method and program

An information output apparatus that is able to communicate with a terminal used by a subject of an experiment for evaluating quality of experience related to utilization of a web browser includes: an output unit configured to output a value of designated information out of information related to processing executed by the web browser of the terminal in accordance with operations. Thus, it is possible to simply acquire information related to processing performed by the web browser in response to arbitrary operations.

Information outputting apparatus, information outputting method and program

A voice quality estimation apparatus includes: a packet sequence creation unit configured to create a first sequence by applying a first characteristic indicating that quality degradation caused by packet loss is perceived by a user all at once, to a sequence consisting of elements each indicating whether or not a packet of a voice call has been lost; a smoothing unit configured to create a second sequence from the first sequence; a degradation amount emphasis unit configured to create a third sequence from the second sequence; a packet loss tolerance characteristics reflection unit configured to create a fourth sequence from the third sequence; a degradation amount calculation unit configured to calculate a degradation amount from the fourth sequence; and a listening quality estimation unit configured to estimate voice quality that is to be experienced by the user, from the degradation amount.

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Musashino, Japan

Ginga Kawaguchi