Decoding apparatus and method, audio signal processing apparatus and method, and program

An audio signal processing apparatus comprising:

• a timing signal generating unit configured to output an internal timing signal when a double buffer is switched while an audio signal is processed by using the double buffer formed with two buffers each having a predetermined length;
• and
• a synchronization control unit configured to synchronize the internal timing signal with an external timing signal supplied from the outside when the internal timing signal and the external timing signal are not in synchronization, by shortening a duration of time before the switching in the double buffer by an amount equivalent to a phase difference between the internal timing signal and the external timing signal.

An audio signal processing method comprising the steps of:

• outputting an internal timing signal when a double buffer is switched while an audio signal is processed by using the double buffer formed with two buffers each having a predetermined length;
• and
• synchronizing the internal timing signal with an external timing signal supplied from the outside when the internal timing signal and the external timing signal are not in synchronization, by shortening a duration of time before the switching in the double buffer by an amount equivalent to a phase difference between the internal timing signal and the external timing signal.

A program for causing a computer to perform a process comprising the steps of:

• outputting an internal timing signal when a double buffer is switched while an audio signal is processed by using the double buffer formed with two buffers each having a predetermined length;
• and
• synchronizing the internal timing signal with an external timing signal supplied from the outside when the internal timing signal and the external timing signal are not in synchronization, by shortening a duration of time before the switching in the double buffer by an amount equivalent to a phase difference between the internal timing signal and the external timing signal.