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Play Songs using sound generator
Play Songs using sound generator
How to Play Songs using sound generator ?
Play Sound (Sound Generator) Example :
uses
MMSystem;
type
TVolumeLevel = 0..127;
procedure MakeSound(Frequency{Hz}, Duration{mSec}: Integer; Volume: TVolumeLevel);
{writes tone to memory and plays it}
var
WaveFormatEx: TWaveFormatEx;
MS: TMemoryStream;
i, TempInt, DataCount, RiffCount: integer;
SoundValue: byte;
w: double; // omega ( 2 * pi * frequency)
const
Mono: Word = $0001;
SampleRate: Integer = 11025; // 8000, 11025, 22050, or 44100
RiffId: string = 'RIFF';
WaveId: string = 'WAVE';
FmtId: string = 'fmt ';
DataId: string = 'data';
begin
if Frequency > (0.6 * SampleRate) then
begin
ShowMessage(Format('Sample rate of %d is too Low to play a tone of %dHz',
[SampleRate, Frequency]));
Exit;
end;
with WaveFormatEx do
begin
wFormatTag := WAVE_FORMAT_PCM;
nChannels := Mono;
nSamplesPerSec := SampleRate;
wBitsPerSample := $0008;
nBlockAlign := (nChannels * wBitsPerSample) div 8;
nAvgBytesPerSec := nSamplesPerSec * nBlockAlign;
cbSize := 0;
end;
MS := TMemoryStream.Create;
with MS do
begin
{Calculate length of sound data and of file data}
DataCount := (Duration * SampleRate) div 1000; // sound data
RiffCount := Length(WaveId) + Length(FmtId) + SizeOf(DWORD) +
SizeOf(TWaveFormatEx) + Length(DataId) + SizeOf(DWORD) + DataCount; // file data
{write out the wave header}
Write(RiffId[1], 4); // 'RIFF'
Write(RiffCount, SizeOf(DWORD)); // file data size
Write(WaveId[1], Length(WaveId)); // 'WAVE'
Write(FmtId[1], Length(FmtId)); // 'fmt '
TempInt := SizeOf(TWaveFormatEx);
Write(TempInt, SizeOf(DWORD)); // TWaveFormat data size
Write(WaveFormatEx, SizeOf(TWaveFormatEx)); // WaveFormatEx record
Write(DataId[1], Length(DataId)); // 'data'
Write(DataCount, SizeOf(DWORD)); // sound data size
{calculate and write out the tone signal} // now the data values
w := 2 * Pi * Frequency; // omega
for i := 0 to DataCount - 1 do
begin
SoundValue := 127 + trunc(Volume * sin(i * w / SampleRate)); // wt = w * i / SampleRate
Write(SoundValue, SizeOf(Byte));
end;
{now play the sound}
sndPlaySound(MS.Memory, SND_MEMORY or SND_SYNC);
MS.Free;
end;
end;
// How to call the function:
procedure TForm1.Button1Click(Sender : TObject);
begin
MakeSound(1200, 1000, 60);
end;
How to Play Songs using sound generator ?
Play Sound (Sound Generator) Example :
uses
MMSystem;
type
TVolumeLevel = 0..127;
procedure MakeSound(Frequency{Hz}, Duration{mSec}: Integer; Volume: TVolumeLevel);
{writes tone to memory and plays it}
var
WaveFormatEx: TWaveFormatEx;
MS: TMemoryStream;
i, TempInt, DataCount, RiffCount: integer;
SoundValue: byte;
w: double; // omega ( 2 * pi * frequency)
const
Mono: Word = $0001;
SampleRate: Integer = 11025; // 8000, 11025, 22050, or 44100
RiffId: string = 'RIFF';
WaveId: string = 'WAVE';
FmtId: string = 'fmt ';
DataId: string = 'data';
begin
if Frequency > (0.6 * SampleRate) then
begin
ShowMessage(Format('Sample
[SampleRate, Frequency]));
Exit;
end;
with WaveFormatEx do
begin
wFormatTag := WAVE_FORMAT_PCM;
nChannels := Mono;
nSamplesPerSec := SampleRate;
wBitsPerSample := $0008;
nBlockAlign := (nChannels * wBitsPerSample) div 8;
nAvgBytesPerSec := nSamplesPerSec * nBlockAlign;
cbSize := 0;
end;
MS := TMemoryStream.Create;
with MS do
begin
{Calculate length of sound data and of file data}
DataCount := (Duration * SampleRate) div 1000; // sound data
RiffCount := Length(WaveId) + Length(FmtId) + SizeOf(DWORD) +
SizeOf(TWaveFormatEx) + Length(DataId) + SizeOf(DWORD) + DataCount; // file data
{write out the wave header}
Write(RiffId[1], 4); // 'RIFF'
Write(RiffCount, SizeOf(DWORD)); // file data size
Write(WaveId[1], Length(WaveId)); // 'WAVE'
Write(FmtId[1], Length(FmtId)); // 'fmt '
TempInt := SizeOf(TWaveFormatEx);
Write(TempInt, SizeOf(DWORD)); // TWaveFormat data size
Write(WaveFormatEx, SizeOf(TWaveFormatEx)); // WaveFormatEx record
Write(DataId[1], Length(DataId)); // 'data'
Write(DataCount, SizeOf(DWORD)); // sound data size
{calculate and write out the tone signal} // now the data values
w := 2 * Pi * Frequency; // omega
for i := 0 to DataCount - 1 do
begin
SoundValue := 127 + trunc(Volume * sin(i * w / SampleRate)); // wt = w * i / SampleRate
Write(SoundValue, SizeOf(Byte));
end;
{now play the sound}
sndPlaySound(MS.Memory, SND_MEMORY or SND_SYNC);
MS.Free;
end;
end;
// How to call the function:
procedure TForm1.Button1Click(Sender
begin
MakeSound(1200, 1000, 60);
end;
"How to Play Songs using sound generator ?" - aaa, sorry, I didn't red this line.
So, basically you should have the melody. Maybe you can get some song written on paper
Frequency - tone
Duration - tempp
Volume - the octave
Using these 3 values, you can play a single note from the song...
So, basically you should have the melody. Maybe you can get some song written on paper
Frequency - tone
Duration - tempp
Volume - the octave
Using these 3 values, you can play a single note from the song...
ASKER
Thanks.
How to organize (in Delphi code) single notes from the (existing ! ! ! ! !) song (for example took from CD) and plaied with sound generator ?
How to organize (in Delphi code) single notes from the (existing ! ! ! ! !) song (for example took from CD) and plaied with sound generator ?
with this generators you can not play song from CD. in the most music formats, there are some channels, bit-rates, etc.
This is useful if you are going to play something simple like ringtone for cell phone and stuff like that.
The notes can be written by musician, I not capable to provide you with notes...
This is useful if you are going to play something simple like ringtone for cell phone and stuff like that.
The notes can be written by musician, I not capable to provide you with notes...
ASKER
OK, Thanks. If my way is wrong to play song from CD, I have one more question.
I tried to get small parts of song from CD. Something like frequency and it's volume from each small part of song in the CD.
There is MMTools and TMMPeakDetect which does that ! ! ! ! !
I thought that that was the right way ! ! ! ! !
I thought that TMMPeakDetect gets frequency volume (from songs in WAV, MP3, CD) and TMMGenerator's sets (to play song in the way how get it TMMPeakDetect) it ! ! ! ! !
But I don't know how ! ! ! ! !
So You tell me that that is wrong ?
Thanks.
I tried to get small parts of song from CD. Something like frequency and it's volume from each small part of song in the CD.
There is MMTools and TMMPeakDetect which does that ! ! ! ! !
I thought that that was the right way ! ! ! ! !
I thought that TMMPeakDetect gets frequency volume (from songs in WAV, MP3, CD) and TMMGenerator's sets (to play song in the way how get it TMMPeakDetect) it ! ! ! ! !
But I don't know how ! ! ! ! !
So You tell me that that is wrong ?
Thanks.
ASKER CERTIFIED SOLUTION
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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, MMSystem, StdCtrls;
type
TVolumeLevel = 0..127;
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure MakeSound(Frequency{Hz}, Duration{mSec}: Integer; Volume: TVolumeLevel);
{writes tone to memory and plays it}
var
WaveFormatEx: TWaveFormatEx;
MS: TMemoryStream;
i, TempInt, DataCount, RiffCount: integer;
SoundValue: byte;
w: double; // omega ( 2 * pi * frequency)
const
Mono: Word = $0001;
SampleRate: Integer = 11025; // 8000, 11025, 22050, or 44100
RiffId: string = 'RIFF';
WaveId: string = 'WAVE';
FmtId: string = 'fmt ';
DataId: string = 'data';
begin
if Frequency > (0.6 * SampleRate) then
begin
ShowMessage(Format('Sample
[SampleRate, Frequency]));
Exit;
end;
with WaveFormatEx do
begin
wFormatTag := WAVE_FORMAT_PCM;
nChannels := Mono;
nSamplesPerSec := SampleRate;
wBitsPerSample := $0008;
nBlockAlign := (nChannels * wBitsPerSample) div 8;
nAvgBytesPerSec := nSamplesPerSec * nBlockAlign;
cbSize := 0;
end;
MS := TMemoryStream.Create;
with MS do
begin
{Calculate length of sound data and of file data}
DataCount := (Duration * SampleRate) div 1000; // sound data
RiffCount := Length(WaveId) + Length(FmtId) + SizeOf(DWORD) +
SizeOf(TWaveFormatEx) + Length(DataId) + SizeOf(DWORD) + DataCount; // file data
{write out the wave header}
Write(RiffId[1], 4); // 'RIFF'
Write(RiffCount, SizeOf(DWORD)); // file data size
Write(WaveId[1], Length(WaveId)); // 'WAVE'
Write(FmtId[1], Length(FmtId)); // 'fmt '
TempInt := SizeOf(TWaveFormatEx);
Write(TempInt, SizeOf(DWORD)); // TWaveFormat data size
Write(WaveFormatEx, SizeOf(TWaveFormatEx)); // WaveFormatEx record
Write(DataId[1], Length(DataId)); // 'data'
Write(DataCount, SizeOf(DWORD)); // sound data size
{calculate and write out the tone signal} // now the data values
w := 2 * Pi * Frequency; // omega
for i := 0 to DataCount - 1 do
begin
SoundValue := 127 + trunc(Volume * sin(i * w / SampleRate)); // wt = w * i / SampleRate
Write(SoundValue, SizeOf(Byte));
end;
{now play the sound}
sndPlaySound(MS.Memory, SND_MEMORY or SND_SYNC);
MS.Free;
end;
end;
procedure TForm1.Button1Click(Sender
begin
MakeSound(1200, 1000, 60);
end;
end.