METHOD OF ESTIMATING QUALITY OF AUDIO SIGNAL, APPARATUS AND COMPUTER-READABLE MEDIUM STORING PROGRAMME Russian patent published in 2014 - IPC G10L25/69 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to means of estimating the quality of an audio signal for a multimedia telecommunication service. The method involves calculating the audio packet loss frequency if at least one audio packet to be estimated exists in once or constantly generated IP packet losses, wherein calculation of the audio packet loss frequency is based on information from the received IP packets by calculating packet loss; calculating the average exposure time/average duration of the audio packet based on information of the received IP packets, wherein the average exposure time serves as the average time during which the quality of the audio signal has an effect at loss frequency of audio packets contained in one-time loss of audio packets; estimating subjective quality based on audio packet loss frequency and either the average exposure time or average duration of the audio packet; calculating audio data transmission speed for calculating the audio data transmission speed based on information from the received IP packets. The subjective quality estimate is calculated based on the quality of the encoded audio signal, audio packet loss frequency and average exposure time.

EFFECT: high accuracy of determining audio signal quality.

8 cl, 25 dwg