Track-synchronous audio signal recording method and apparatus

An audio recorder for conducting a track-synchronous record, comprising:

• a signal writer configured to write an input audio signal on a recording medium;
• a detector configured to detect a no-sound time interval of an input audio signal when the input audio signal is an analog signal, and to detect if division information exists in the input audio signal when the input audio signal is a digital signal, said no-sound time interval and division information indicating the input audio signal includes sub-audio units;
• and
• a controller configured to determine whether or not a new sub-audio unit needs to be generated based on sub-audio units detected by the detector.

A recording method, comprising:

• determining whether an input audio signal is a digital audio signal or an analog audio signal;
• detecting if division information exists in the input audio signal when the input audio signal is the digital audio signal, said division information indicating the digital audio signal includes sub-audio units;
• and
• determining whether or not a new sub-audio unit needs to be recorded based on the detecting step.

An audio recorder, comprising:

• a processor configured to determine whether an input audio signal is a digital audio signal or an analog audio signal;
• a sub-audio unit detector configured to detect if division information exists in the input audio signal when the input audio signal is the digital audio signal, said division information indicating the digital audio signal includes sub-audio units;
• and
• determining whether or not a new sub-audio unit needs to be recorded based on the division information detected by the sub-audio unit.