Patent ID: 8088987
Filing Date: 2012-01-03
Classification: G10H

Abstract:
1. A tone signal processing apparatus comprising: an input section which inputs a tone signal; a pitch detection section which sequentially detects a pitch of the tone signal input via said input section; a determination section which determines whether or not there has been a variation in the pitch detected by said pitch detection section; a first tone generation section which generates a first tone signal of a first pitch on the basis of the input tone signal; and a second tone generation section which generates a second tone signal of a second pitch on the basis of the pitch detected by said pitch detection section, where, when said determination section determines that there has been a variation in the pitch, said second tone generation section waits until a predetermined time passes, and said second tone generation section performs control to change the second pitch of the second tone signal if a pitch detected immediately before the variation and a current pitch detected by said pitch detection section are determined to be different from each other upon passage of the predetermined time.