02-18-2023, 09:21 PM
Hello. I went through the forum and found some questions about saving sound and also questions about whether it is possible to create and save sound in QB64. The answer to both is yes. The attached program is from January 5, 2021, when I was actively involved. Then the forum was destroyed and I vowed not to spend time on something that would just disappear overnight. I'm here today after a long time (I'm using QB64 2.02) and I see that there might be interest in this, so I'm posting it here. My SaveSound16S will be useful, it saves your sound in stereo WAV file format and I used it for testing because SNDRAW had problems with stereo (I don't know how it is with this command now).
This program open your music file, then create WAV file from it named as TestEff3.wav (contains stereo switching) and then play it using SNDPLAYFILE statement.
and to querstion 2 - is possible creating and saving sound using QB64? YES:
Program create sound (used for this is program from QB64 SNDRAW help) and then easily modified for saving this sound in WAV format.
This program open your music file, then create WAV file from it named as TestEff3.wav (contains stereo switching) and then play it using SNDPLAYFILE statement.
Code: (Select All)
DIM left AS _MEM
DIM Right AS _MEM
DIM AudioL AS INTEGER
DIM AudioR AS INTEGER
DIM L AS INTEGER
DIM R AS INTEGER
DIM NewSound AS _MEM
INPUT "Insert music STEREO file name"; snd$
IF _FILEEXISTS(snd$) THEN
snd = _SNDOPEN(snd$)
IF snd > 0 THEN
left = _MEMSOUND(snd, 1)
Right = _MEMSOUND(snd, 2)
IF Right.SIZE > 0 THEN
NewSound = _MEMNEW(left.SIZE * 2)
DO UNTIL s& = left.SIZE
_MEMGET left, left.OFFSET + s&, AudioL
_MEMGET Right, Right.OFFSET + s&, AudioR
L = AudioL * ABS(SIN(sinus)) ' SINUS is LEFT/RIGHT CHANNEL SWITCH :)
R = AudioR * ABS(COS(sinus))
_MEMPUT NewSound, NewSound.OFFSET + t&, L
_MEMPUT NewSound, NewSound.OFFSET + t& + 2, R
sinus = sinus + .00001
s& = s& + 2
t& = t& + 4
LOOP
ELSE
PRINT "This sound file is not stereo!"
END
END IF
ELSE
PRINT "File exists, bud this music format is not supported."
END
END IF
ELSE
PRINT "File "; snd$; " not found."
END
END IF
SAVESOUND16S NewSound, "TestEff3.wav"
_SNDPLAYFILE "TestEff3.wav"
END
SUB SAVESOUND16S (arr AS _MEM, file AS STRING)
TYPE head16
chunk AS STRING * 4 ' 4 bytes (RIFF)
size AS LONG ' 4 bytes (file size)
fomat AS STRING * 4 ' 4 bytes (WAVE)
sub1 AS STRING * 4 ' 4 bytes (fmt )
subchunksize AS LONG ' 4 bytes (lo / hi), $00000010 for PCM audio
format AS INTEGER ' 2 bytes (0001 = standard PCM, 0101 = IBM mu-law, 0102 = IBM a-law, 0103 = IBM AVC ADPCM)
channels AS INTEGER ' 2 bytes (1 = mono, 2 = stereo)
rate AS LONG ' 4 bytes (sample rate, standard is 44100)
ByteRate AS LONG ' 4 bytes (= sample rate * number of channels * (bits per channel /8))
Block AS INTEGER ' 2 bytes (block align = number of channels * bits per sample /8)
Bits AS INTEGER ' 2 bytes (bits per sample. 8 = 8, 16 = 16)
subchunk2 AS STRING * 4 ' 4 bytes ("data") contains begin audio samples
lenght AS LONG ' 4 bytes Data block size
END TYPE ' 44 bytes total
DIM H16 AS head16
ch = FREEFILE
H16.chunk = "RIFF"
H16.size = 44 + ConvertOffset&&(arr.SIZE) / _SNDRATE / 4 'two channels, it create 16 bit, stereo wav file, one sample use 2 bytes to one channel
H16.fomat = "WAVE"
H16.sub1 = "fmt "
H16.subchunksize = 16
H16.format = 1
H16.channels = 2
H16.rate = 44100
H16.ByteRate = 44100 * 2 * 16 / 8
H16.Block = 4
H16.Bits = 16
H16.subchunk2 = "data"
H16.lenght = ConvertOffset&&(arr.SIZE)
' $END IF
IF _FILEEXISTS(file$) THEN KILL file$
Audio$ = SPACE$(ConvertOffset&&(arr.SIZE))
_MEMGET arr, arr.OFFSET, Audio$
OPEN file$ FOR BINARY AS #ch
PUT #ch, , H16
PUT #ch, , Audio$
Audio$ = ""
CLOSE ch
END SUB
FUNCTION ConvertOffset&& (value AS _OFFSET)
$CHECKING:OFF
DIM m AS _MEM 'Define a memblock
m = _MEM(value) 'Point it to use value
$IF 64BIT THEN
'On 64 bit OSes, an OFFSET is 8 bytes in size. We can put it directly into an Integer64
_MEMGET m, m.OFFSET, ConvertOffset&& 'Get the contents of the memblock and put the values there directly into ConvertOffset&&
$ELSE
'However, on 32 bit OSes, an OFFSET is only 4 bytes. We need to put it into a LONG variable first
_MEMGET m, m.OFFSET, temp& 'Like this
ConvertOffset&& = temp& 'And then assign that long value to ConvertOffset&&
$END IF
_MEMFREE m 'Free the memblock
$CHECKING:ON
END FUNCTIONand to querstion 2 - is possible creating and saving sound using QB64? YES:
Code: (Select All)
'this program is from SNDRAW help, create sound using QB64, modifie so, it also save this sound.
t = 0
tmp$ = "Sample = ##.##### Time = ##.#####"
Locate 1, 60: Print "Rate:"; _SndRate
'------ modification -------
Dim SNDREC(44100 * 3.1) As Integer 'sound duration is 3 seconds, use 44100 samples/sec
'------ modification -------
Do
'queue some sound
Do While _SndRawLen < 0.1 'you may wish to adjust this
sample = Sin(t * 440 * Atn(1) * 8) '440Hz sine wave (t * 440 * 2Ď€)
sample = sample * Exp(-t * 3) 'fade out eliminates clicks after sound
_SndRaw sample
'------ modification -------
SNDREC(rec) = 32768 * sample
rec = rec + 1
'------ modification -------
t = t + 1 / _SndRate 'sound card sample frequency determines time
Loop
'do other stuff, but it may interrupt sound
Locate 1, 1: Print Using tmp$; sample; t
Loop While t < 3.0 'play for 3 seconds
Do While _SndRawLen > 0 'Finish any left over queued sound!
Loop
Print rec
'------ modification -------
Dim L As _MEM
Dim LR As _MEM
Dim REC As Integer
L = _Mem(SNDREC())
'because created sound is MONO but we recording it as stereo, create here pseudo stereo memory array:
LR = _MemNew(L.SIZE * 2)
done = 0
Do Until done = L.SIZE
_MemGet L, L.OFFSET + done, REC
_MemPut LR, LR.OFFSET + RECINDEX, REC 'left
_MemPut LR, LR.OFFSET + RECINDEX + 2, REC 'right
done = done + 2 'switch by 2 bytes in L MEM array
RECINDEX = RECINDEX + 4 'switch by 4 bytes in LR MEM array
Loop
_MemFree L
Print "Saving sound as ding.wav..."
SAVESOUND16S LR, "ding.wav"
_MemFree LR
Print "Playing created file ding.wav..."
_SndPlayFile "ding.wav"
End
Sub SAVESOUND16S (arr As _MEM, file As String)
Type head16
chunk As String * 4 ' 4 bytes (RIFF)
size As Long ' 4 bytes (file size)
fomat As String * 4 ' 4 bytes (WAVE)
sub1 As String * 4 ' 4 bytes (fmt )
subchunksize As Long ' 4 bytes (lo / hi), $00000010 for PCM audio
format As Integer ' 2 bytes (0001 = standard PCM, 0101 = IBM mu-law, 0102 = IBM a-law, 0103 = IBM AVC ADPCM)
channels As Integer ' 2 bytes (1 = mono, 2 = stereo)
rate As Long ' 4 bytes (sample rate, standard is 44100)
ByteRate As Long ' 4 bytes (= sample rate * number of channels * (bits per channel /8))
Block As Integer ' 2 bytes (block align = number of channels * bits per sample /8)
Bits As Integer ' 2 bytes (bits per sample. 8 = 8, 16 = 16)
subchunk2 As String * 4 ' 4 bytes ("data") contains begin audio samples
lenght As Long ' 4 bytes Data block size
End Type ' 44 bytes total
Dim H16 As head16
ch = FreeFile
H16.chunk = "RIFF"
H16.size = 44 + ConvertOffset&&(arr.SIZE) / _SndRate / 4 'two channels, it create 16 bit, stereo wav file, one sample use 2 bytes to one channel
H16.fomat = "WAVE"
H16.sub1 = "fmt "
H16.subchunksize = 16
H16.format = 1
H16.channels = 2
H16.rate = 44100
H16.ByteRate = 44100 * 2 * 16 / 8
H16.Block = 4
H16.Bits = 16
H16.subchunk2 = "data"
H16.lenght = ConvertOffset&&(arr.SIZE)
' $END IF
If _FileExists(file$) Then Kill file$
Audio$ = Space$(ConvertOffset&&(arr.SIZE))
_MemGet arr, arr.OFFSET, Audio$
Open file$ For Binary As #ch
Put #ch, , H16
Put #ch, , Audio$
Audio$ = ""
Close ch
End Sub
Function ConvertOffset&& (value As _Offset)
$Checking:Off
Dim m As _MEM 'Define a memblock
m = _Mem(value) 'Point it to use value
$If 64BIT Then
'On 64 bit OSes, an OFFSET is 8 bytes in size. We can put it directly into an Integer64
_MEMGET m, m.OFFSET, ConvertOffset&& 'Get the contents of the memblock and put the values there directly into ConvertOffset&&
$Else
'However, on 32 bit OSes, an OFFSET is only 4 bytes. We need to put it into a LONG variable first
_MemGet m, m.OFFSET, temp& 'Like this
ConvertOffset&& = temp& 'And then assign that long value to ConvertOffset&&
$End If
_MemFree m 'Free the memblock
$Checking:On
End FunctionProgram create sound (used for this is program from QB64 SNDRAW help) and then easily modified for saving this sound in WAV format.