Patent ID: 7169999
Filing Date: 2007-01-30
Classification: G10H

Abstract:
1. A digital signal processing apparatus comprising: first decoding means for decoding control data previously encoded and described in interface data for an instrumental performance, which contains at least performance data for causing a sound source storing plural pieces of instrumental tone information to generate a performance tone of an instrument; and second decoding means for decoding a digital signal other than a signal of the performance tone, in correspondence with reproduction timing information of the performance data, on the basis of the control data decoded by the first decoding means, wherein the interface data includes an indication of a type of the digital signal other than the performance tone signal, and wherein the type comprises one of an audio signal, an image signal, and a text signal; wherein the control data may be modified by a user to create an encoded data string in a standard format of the interface data; and wherein the control data is described before a timing at which the control data is desired to be controlled, and timing information setting forth when control is to be executed is included in the control data.