Patent Document ID: 20050115382
Application ID: 10477042
Patent Flag: 0

Claim One:
1. A score tracking method comprising: a first step of detecting a list of frequency models, which are expected to occur during performance of a score, from score information; a second step of generating a matching model, which is composed of frequency components that are expected to be included in audio data externally input at the time, based on the frequency model list; a third step of receiving external audio data, converting the audio data into digital signal, and detecting current performance frequency data from the digital signal; a fourth step of determining whether a new frequency component is included in the current performance frequency data; a fifth step of determining whether the matching model matches the current performance frequency data when a new frequency component is included in the current performance frequency data; and a sixth step of generating synchronized information between the real performing notes and the score notes and updating the matching model, when it is determined that the matching model matches the current performance frequency data in the fifth step.