Content data generating device, content data generating method, sound signal generating device and sound signal generating method

A content data generating method of a content data generating device including a first storage storing content data including at least either video information or audio information and a second storage storing variation data representing change of a parameter on the content data, the content data generating method comprising the steps of:

• designating a portion of the variation data;
• and
• processing the content data according to a value of the parameter of the portion of the variation data designated by the designator to generate processed content data,
• wherein the content data is waveform data representing a waveform of a sound signal;
• wherein the variation data is a data sequence is constituted by plural segment defining data for defining plural segments respectively when the plural segments are cut out from the waveform data,
• wherein the designator designates plural adjacent segment defining data of the plural segment defining data constituting the data sequence, and
• wherein the content data generator cuts out the plural segments from the waveform data according to the designated plural segment defining data, cross-fades the plural segments to generate waveform data, and writes the generated waveform data to the first storage.