Music performance system, music stations synchronized with one another and computer program used therein

A music station connected to a communication network, and comprising:

• a music data source producing said pieces of music data expressing a performance of a tune;
• an internal clock measuring a lapse of time:
• a time keeper connected to said music data source and said internal clock, determining a time in said lapse of time at which each of said pieces of music data is produced and pairing said pieces of time data each expressing said time with said pieces of music data, respectively;
• a communication module received with said pieces of music data respectively paired with said pieces of time data and putting said pieces of music data respectively paired with said pieces of time data onto said communication network;
• a monitor measuring a time period between two of said pieces of music data handled by said communication module and initiating a time setting work when said time period becomes equal to a predetermined time period;
• and
• a clock setter connected to said internal clock, said monitor and a standard clock for measuring a standard time and setting said internal clock by said standard clock when said monitor determines to initiate said time setting work.

A music station connected to a communication network, comprising:

• an internal clock measuring a lapse of time;
• a tone generator producing tones respectively expressed by pieces of music data;
• a communication module receiving said pieces of music data respectively paired with pieces of time data each expressing a time, at which associated one of said pieces of music data is produced, from said communication network;
• a data buffer connected to said communication module for accumulating said pieces of music data respectively paired with said pieces of time data, comparing said time expressed by each of said pieces of time data with the time indicated by said internal clock and supplying the piece of music data paired with said each of said pieces of time data to said tone generator when said time expressed by said each of said pieces of time data is consistent with said time indicated by said internal clock;
• a monitor measuring a time period between two of said pieces of music data handled by said communication module and initiating a time setting work when said time period becomes equal to a predetermined time period;
• and
• a clock setter connected to said internal clock, said monitor and said standard clock and setting said internal clock by said standard clock when said monitor determines to initiate said time setting work.

A computer program representative of a method for setting an internal clock by a standard clock, comprising the steps of:

• a) measuring a time period from a piece of music data to the next piece of music data with an internal clock;
• b) determining whether or not said time period becomes equal to a predetermined time period;
• c) repeating said steps a) and b) while the answer at said step b) is given negative;
• d) reading a standard time from a standard clock without the execution of said step c) when the answer at said step b) is given affirmative;
• and
• e) setting said internal clock by said standard clock.