Audio Modifications (filters/effects)

[RyanG]

I am developing an app where the user can record their voice, and then alter it in some way. I have implemented OpenAL, and I am able to adjust the pitch to speed up and slow down the audio file. The thing is, I want to add filters like echo, reverb, etc.. I have scoured the internet for hours and have found nothing to help me. I came across a OpenAL called FreeSL, which has a bunch of filters built in, but I cannot get it compile in xcode.

I have also looked into Dirac3, but again all I am seeing is basic pitch/time controls; no echos or anything.

Can anyone point me in the direction a good framework or explain how OpenAL can handle filters like this?

Thanks!

[dany_dev]

for audio processing you should look this example:

aurioTouch
and
SpeakHere

but audio processing is not something easy, it is a huge topik.

[RyanG]

Originally Posted by dany_dev

for audio processing you should look this example:

aurioTouch
and
SpeakHere

but audio processing is not something easy, it is a huge topik.

I understand now that it is not easy hah. Well I had looked at both of those examples earlier and none really help my current issue, which is adding filters and effects to audio.

[dany_dev]

Originally Posted by RyanG

I understand now that it is not easy hah. Well I had looked at both of those examples earlier and none really help my current issue, which is adding filters and effects to audio.

yes, and to do that you need access to raw audio data (low level) applying some alghoritm to data, so there is not an [sound applyFunVoice]; function to call

[RyanG]

Originally Posted by dany_dev

yes, and to do that you need access to raw audio data (low level) applying some alghoritm to data, so there is not an [sound applyFunVoice]; function to call

I understand that; but all OpenAL gives you access to is simple things like gain, pitch, and velocity; would any effects I want to create be created using just them?