Signal processing apparatus and method, signal processing system, and program

A signal processing method comprising:

• a singing enthusiasm calculating step of calculating a degree of singing enthusiasm formed with a feature quantity indicating a status of singing enthusiasm of a performer of a tune, the singing enthusiasm calculating step being carried out at a singing enthusiasm calculating unit configured to calculate the degree of singing enthusiasm formed with the feature quantity indicating the status of singing enthusiasm of the performer of the tune;
• a harmonizing voice signal superimposition determining step of determining whether to superimpose a harmonizing voice signal on a singing voice signal of the performer of the tune based on the degree of singing enthusiasm calculated by the processing in the singing enthusiasm calculating step, the harmonizing voice signal superimposition determining step being carried out at a harmonizing voice signal superimposition determining unit configured to determine whether to superimpose the harmonizing voice signal on the singing voice signal of the performer of the tune based on the degree of singing enthusiasm calculated by the singing enthusiasm calculating unit;
• and
• a harmonizing voice signal superimposing step of superimposing the harmonizing voice signal on the singing voice signal based on a result of the determination performed by the processing in the harmonizing voice signal superimposition determining step, the harmonizing voice signal superimposing step being carried out at a harmonizing voice signal superimposing unit configured to superimpose the harmonizing voice signal on the singing voice signal based on a result of the determination performed by the harmonizing voice signal superimposition determining unit.

A program for causing a computer to perform an operation including:

• a singing enthusiasm calculating step of calculating a degree of singing enthusiasm formed with a feature quantity indicating a status of singing enthusiasm of a performer of a tune, the singing enthusiasm calculating step being carried out at a singing enthusiasm calculating unit;
• a harmonizing voice signal superimposition determining step of determining whether to superimpose a harmonizing voice signal on a singing voice signal of the performer of the tune based on the degree of singing enthusiasm calculated by the processing in the singing enthusiasm calculating step, the harmonizing voice signal superimposition determining step being carried out at a harmonizing voice signal superimposition determining unit;
• and
• a harmonizing voice signal superimposing step of superimposing the harmonizing voice signal on the singing voice signal based on a result of the determination performed by the processing in the harmonizing voice signal superimposition determining step, the harmonizing voice signal superimposing step being carried out at a harmonizing voice signal superimposing unit,
• the computer controlling a signal processing apparatus including:
• the singing enthusiasm calculating unit configured to calculate the degree of singing enthusiasm formed with the feature quantity indicating the status of singing enthusiasm of the performer of the tune;
• the harmonizing voice signal superimposition determining unit configured to determine whether to superimpose the harmonizing voice signal on the singing voice signal of the performer of the tune based on the degree of singing enthusiasm calculated by the singing enthusiasm calculating unit;
• and
• the harmonizing voice signal superimposing unit configured to superimpose the harmonizing voice signal on the singing voice signal based on a result of the determination performed by the harmonizing voice signal superimposition determining unit.