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Audio frequency generator: Difference between revisions
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{{draft task}}
[[Category:Electronics]] [[Category:Sciences]]▼
[[Category:Sound]] [[Category:Temporal media]]▼
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An audio [[wp:Signal_generator|frequency generator]] produces a continual audible monotone at a set frequency and level of volume.
There are controls to adjust the frequency and the volume up and down as desired.
Some also have a selector to switch the waveform type between sine wave, square wave and triangular sawtooth.
The task is to emulate an audio frequency generator.
It is permissible to use an inbuilt computer speaker
if the system does not have the facility to utilize dedicated sound hardware.
The solution should include:
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=={{header|ZX Spectrum Basic}}==
The ZX Spectrum is not very good at making sound.
Most applications in BASIC would just produce annoying beeps,
and the following is no exception.
To emulate the signal generator, we just produce repetative beeps
using the inbuilt speaker.
The left and right keys (5 and 8) change the tone.
There is no volume control on the Spectrum.
<lang zxbasic>10 REM The crappest signal generator in the world
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80 BEEP 0.1,n: REM beep for 0.1 second at n semitones relative to middle C
90 GO TO 40</lang>
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▲[[Category:Electronics]]
▲[[Category:Temporal media]]
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