I recorded the human voice and want to convert it into animal's or robot's voice just like talking tom does. Is there any way to do operation on the recorded sound in corona? Or is there any way to use the java codes?
Thanks in Advance.
You can use native libraries (AKA java codes) with the Corona Enterprise Edition.
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I would like to modulate the signal from the mic input with a sine wave at 200HZ (FM only). Anyone know of any good tutorials/articles that will help get me started?
Any info is very welcome
Thanks
I suggest you start here Audio File Stream Services Reference
Here you can also find some basic tutorials: Getting Started with Audio & Video.
Especially the SpeakHere example app could be interesting
Hope that helps you
The standard way to do audio processing in iOS or OSX is Core Audio. Here's Apple's overview of the framework.
However, Core Audio has a reputation of being very difficult to learn, especially if you don't have experience with C. If you're still wanting to learn Core Audio, then this book is the way to go: Learning Core Audio.
There are simpler ways to work with audio on iOS and OSX, one of them being AudioKit, which was developed specifically so developers can quickly prototype audio without having to deal with lower-level memory management, buffers, and pointer arithmetic.
There are examples showing both FM synthesis and audio input via the microphone, so you should have everything you need :)
Full disclosure: I am one of the developers of AudioKit.
I am creating an iOS game in which I have to inform user about events in the game with voice, that you have moved one piece, 2 pieces or well done you have performed well.
The problem is that voices are in large amount and if I replace audio files for each voice the app size will grow very large.
Second option I have discovered is to use text-to-speech library. I have tried "OpenEars" but the issue is I want voice like cartoon character or bird like which is not available in any of open source text-to-speech libraries as far as I have searched.
Can anybody suggest me what is the better way to handle it or any text-to-speech framework with different voice capabilities as mentioned in above paragraph.
Thanks in advance.
VoiceForge offers different TTS voices.
http://www.voiceforge.com
guys.
I'm working on some audio services on iOS.
I trying to search any examples or tutorials about
how audio service or stream can read a existing audio file than
process something like filter, than write another file.
Is there any body who can help me?
Dirac3LE (by Stephan M. Bernsee) is a great library for this job.
There are examples and manual included in the download.
It is particulary inteded for time and pitch manipulation
but in your case you'll be interested in its EAFRead and EAFWrite
classes.
If you want to get familiar with the lower level library that you can also use for microphone input/sound output, and that you can get raw samples into and out of, I would suggest taking a look at Audio Queue Services.
I used it in my side project to get audio from the microphone, and I also wrote some code you might find useful to do fast vectorized, FFT based FIR filtering on input audio. You can find the code here https://github.com/jamescarlson/FreeAPRS
I need to implement a wavetable player in my app. For different notes (polyphony) a note on and note off feature is needed (including looping for relevant sounds).
The samples are available or can be converted by myself, the need is for a class that is capable of playing, looping and stopping the samples or waves.
I found some open source project like fluid synth but here the question is for some sample code available for iOS or openAL.
Thank you in advance for any hints or snippets,
regards, Koen.
You could take a look at the new Sampler audio unit in iOS5. This lets you play samples with pitch control at low latency.
There is some sample code from Apple.
I want to play a recorded movie as my webcam? How can i do this , i am a Delphi programmer it's necessary to write a device driver ?
I am waiting for ideas on getting this task done.Thank you!
You'll want to take a look at the Windows Image Acquisition service. At first glance it looks like you're correct. You will probably have to write a user mode driver to do this. Once this is accomplished you should be able to stream your movie through any software that takes advantage of a webcam.
If you want the movie to be accessible to webcam-related APIs and OS features, then yes, you would need to write (or find a thirdp-party) device driver that is usable by multimedia APIs.