Audio frequency generator: Difference between revisions
Added FreeBASIC
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Freq(F,10000)
End</syntaxhighlight>
=={{header|FreeBASIC}}==
[https://www.un4seen.com/ Library: BASS]
<syntaxhighlight lang="vbnet">#include "bass.bi"
#include "fbgfx.bi"
Dim Shared As Integer freq = 440, volume = 50
Dim Shared As HSTREAM stream
Sub CheckKeys()
If Multikey(SC_LEFT) Then freq -= 10
If Multikey(SC_RIGHT) Then freq += 10
If Multikey(SC_UP) Then volume += 5
If Multikey(SC_DOWN) Then volume -= 5
' Limit frequency and volume to reasonable values
If freq < 20 Then freq = 20
If freq > 20000 Then freq = 20000
If volume < 0 Then volume = 0
If volume > 100 Then volume = 100
' Update the stream with the new frequency and volume
BASS_ChannelSetAttribute(stream, BASS_ATTRIB_FREQ, freq)
BASS_ChannelSetAttribute(stream, BASS_ATTRIB_VOL, volume / 100.0)
End Sub
' Initialize BASS using the default device at 44.1 KHz.
If (BASS_Init(-1, 44100, 0, 0, 0) = False) Then
Print "Could not initialize audio! BASS returned error " & BASS_ErrorGetCode()
Sleep
End
End If
' Create a stream
stream = BASS_StreamCreate(44100, 1, 0, @BASS_STREAMPROC_PUSH, NULL)
If stream = 0 Then
Print "Error creating stream: "; BASS_ErrorGetCode()
BASS_Free
Sleep
End 1
End If
' Start the stream
BASS_ChannelPlay(stream, False)
Do
CheckKeys
Sleep 10
Loop Until Inkey$ <> ""
' Clean up
BASS_StreamFree(stream)
BASS_Free</syntaxhighlight>
=={{header|Go}}==
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