Tone

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PC speaker Tones

Tone pitch duration

makes the PC speaker output a tone of pitch lasting duration seconds. The pitch is a number, normally an integer, representing a musical note. 0 means A. Its frequency is computed by 440*2^(pitch/12).

Examples: 

tone 3 1000	;outputs a C on the PC speaker
tone -12 1000	;outputs a A (220Hz) on the PC speaker

Example:

References:

PC speaker Tones