Is there a demo for add effects and export to wav files?

Question

I have searched, but not find a way to solve it.

Add effects to a input.wav file, and play it. and then export a new wav file with effects. please help me.

my code is :

result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);

    if (FMOD_OK != result) {
        printf("FMOD lib version %08x doesn't match header version %08x", version, FMOD_VERSION);
    }

   // result = system->setOutput(FMOD_OUTPUTTYPE_WAVWRITER);
   // ERRCHECK(result);

    char cDest[200] = {0};
    NSString *fileName=[NSString stringWithFormat:@"%@/addeffects_sound.wav", [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]];
    [fileName getCString:cDest maxLength:200 encoding:NSASCIIStringEncoding];

    result = system->init(32, FMOD_INIT_NORMAL | FMOD_INIT_PROFILE_ENABLE, cDest);
    //result = system->init(32, FMOD_INIT_NORMAL, extradriverdata);
    ERRCHECK(result);

    result = system->getMasterChannelGroup(&mastergroup);

    ERRCHECK(result);

    [self createAllDSP];

-(void)createSound:(NSString *)filename
{
    //printf("really path = %s", getPath(filename));
    result = system->createSound(getPath(filename),  FMOD_DEFAULT, 0, &sound);
    ERRCHECK(result);
    [self playSound];
}

-(void) playSound
{
    result = system->playSound(sound, 0, false, &channel);
    ERRCHECK(result);
    //result = channel->setLoopCount(1);
   // ERRCHECK(result);
}

score 1 · Accepted Answer · answered Aug 18 '15 at 10:48

Your question is quite broad, I encourage you to refocus on the areas you are having trouble with.

To answer your question generally though, there are several APIs you will need to achieve your goal, you have some of them in your code.

To get the FMOD system ready to output a .wav:

System_Create
System::setOutput
System::init

To create and prepare the desired effect:

System::createDSPByType
System::addDSP

To create and play the desired sound:

System::createSound
System::playSound

To check when the sound is done:

System::update
Channel::isPlaying

To shutdown and finialize the .wav

Sound::release
System::release

This is a basic outline of one way you can achieve your goal with FMOD.

Is there a demo for add effects and export to wav files?

1 Answers1