Tchart 繪聲音波形 |
尚未結案
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huei_brother
一般會員 發表:36 回覆:15 積分:10 註冊:2004-08-23 發送簡訊給我 |
我参考板上文章把聲音檔讀入然後想把波形用Tchart畫出但是都會出現以下問題所以想請大家幫個忙
char *cpHeader; int iSampleSize; short *pVoiceBuffer; long lSamplingRate,lFileSize; short sBitsPerSample,sChannels; OpenDialog->InitialDir="D:\\"; if(OpenDialog->Execute()==false) { OpenFiles->Enabled=true; return; } sOpenFileName=OpenDialog->FileName; f= new TFileStream(sOpenFileName,fmShareDenyWrite); cpHeader= new char[44]; f->ReadBuffer(cpHeader,44); f->Seek(22,soFromBeginning); f->Read(&sChannels,sizeof(short)); f->Seek(24,soFromBeginning); f->Read(&lSamplingRate,sizeof(long)); f->Seek(34,soFromBeginning); f->Read(&sBitsPerSample,sizeof(short)); f->Seek(40,soFromBeginning); f->Read(&lFileSize,sizeof(long)); if(sBitsPerSample==8) { iSampleSize=lFileSize; } else if(sBitsPerSample==16) { iSampleSize=lFileSize/2; } else { return; } pVoiceBuffer= new short[iSampleSize]; f->Seek(44,soFromBeginning); f->ReadBuffer(pVoiceBuffer,lFileSize); //畫圖 int i,yValue; for ( i = 0 ; i < lFileSize; i ++) { yValue =pVoiceBuffer[i] ; Chart1->Series->AddY(yValue,"",clRed); } |
huei_brother
一般會員 發表:36 回覆:15 積分:10 註冊:2004-08-23 發送簡訊給我 |
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hjj1103
一般會員 發表:3 回覆:26 積分:5 註冊:2002-11-03 發送簡訊給我 |
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