Q(uick)BASIC Statement: SOUND

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SOUND

A device I/O statement that generates sound through the speaker

Worth knowing

Useful and cross-version information about the programming environments of QBasic and QuickBasic.

Syntax
  • SOUND frequency, duration
Description/Parameter(s)
frequency The frequency of the sound in hertz; a value in the range 37 through 32,767.
duration The number of system clock ticks the sound lasts; a value in the range 0 through 65,535. There are 18.2 clock ticks per second.
Example
FOR i% = 440 TO 1000 STEP 5 SOUND i%, i% / 1000 NEXT i%

See also:

Syntax
  • SOUND frequency,duration
Description/Parameter(s)

The frequency is the desired frequency in hertz (cycles/second). It must be a numeric expression returning an integer in the range 37-32,767.

The duration is the duration in clock ticks. (There are 18.2 clock ticks per second regardless of CPU speed.) The duration must be a numeric expression returning an unsigned integer in the range 0-65,535.

If the duration is zero, any current SOUND statement that is running is turned off. If no SOUND statement is running, a SOUND statement with a duration of zero has no effect.

Example

This program produces a rising and descending glissando:

CLS FOR I = 440 TO 1000 STEP 5 SOUND I, I/1000 NEXT FOR I = 1000 TO 440 STEP -5 SOUND I, I/1000 NEXT

See also:

Syntax
  • SOUND frequency, duration%
Description/Parameter(s)
frequency The frequency of the sound in cycles per second or hertz. It must be a numeric expression with a value between 37 and 32, 767, inclusive.
duration% The number of system clock ticks the sound lasts. It must be a numeric expression with an unsigned integer value between 0 and 65,535, inclusive. There are 18.2 clock ticks per second, regardless of CPU speed.
The SOUND statement is not available in OS/2 protected mode.
  • If duration% is 0, any current SOUND statement that is running in the background is turned off. If no SOUND statement is running, a duration of 0 has no effect.
Example

This example uses the SOUND statement to produce rising and descending glissando.

CLS FOR I = 440 TO 1000 STEP 5 SOUND I, I / 1000 NEXT FOR I = 1000 TO 440 STEP -5 SOUND I, I / 1000 NEXT

See also: