Patent ID: 8271288
Filing Date: 2012-09-18
Classification: G10K,G10L,H04K

Abstract:
1. A non-transitory computer-readable storage medium containing a program for causing a computer to perform a masking sound generation procedure, said masking sound generation procedure comprising: a step of reading out an original sound signal from a memory which stores the original sound signal based on a picked-up sound; a step of generating a speech utterance speed signal, indicative of a speech utterance speed of the picked-up sound, on the basis of the original sound signal read out from the memory via said step of reading; a readout step of reading out a frame length, corresponding to the generated speech utterance speed signal, from a table where the speech utterance speed and the frame length for dividing the sound signal into predetermined time lengths are stored in association with each other; and a step of dividing the original sound signal, read out from the memory , into a plurality of frames on the basis of the frame length read out by said readout step, replacing each of the divided frames with a sound signal generated by reading out sample data of the frame in reverse chronological order, generating a reconfigured sound signal by reconfiguring the replaced frames so as to change a time series of the frames and then outputting the reconfigured sound signals as a scrambled sound signal.