sound - BASIC Commands

Name:

sound

Syntax:

SOUND pin,(note,duration,note,duration...)

Pin - is a variable/constant which specifies the i/o pin to use.

Note(s) - are variables/constants (0-255) which specify type and frequency. Note 0 is silent for the duration. Notes 1-127 are ascending tones. Notes 128-255 are ascending white noises.

Duration(s) - are variables/constants (0-255) which specify duration (multiples of approx 10ms).

Description:

Play sound 'beep' noises. This command is designed to make audible 'beeps' for games and keypads etc. To play music use the play or tune command instead.

Note and duration must be used in 'pairs' within the command.

Effect of Increased Clock Speed:

The length of the note is halved at 8MHz and quartered at 16MHz.

Applies To:

All

See Also:

Related Create:

Play a sequence of sounds

Play a sound on output B.7 then play the next higher sound frequency

Code Example:

main:	let b0 = b0 + 1		; increment b0
	sound B.7,(b0,50)	; make a sound
	goto main		; loop back to start

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Play a sequence of sounds

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