DIRAC2-iPhone
C Object Library for Hi-End Tempo and Pitch Manipulation of Polyphonic Audio Signals on the Apple iPhone
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DIRAC2 brings the power of DIRAC to your iPhone projects. Highly optimimzed for the ARM6 and 7 processors this library allows affordable studio quality time stretching in any of your apps – without much effort. DIRAC2 on the iPhone has been specially designed and optimized to run near-realtime (preview mode) on the iPhone. Higher quality modes are also available.
Used by leading hi-end audio processing applications and custom built solutions in studios around the world, DIRAC2 is the improved successor to our critically acclaimed DIRAC time stretching and pitch shifting technology that works with both musically monophonic and polyphonic signals with equal ease and success. Its straightforward API makes this an ideal tool for any software project that requires time stretching and pitch shifting.
Easy to Integrate – Added Value for Your Customers
DIRAC2 is a powerful tool for developers that is easy to implement and integrates seemlessly with Apple’s Cocoa Touch framework. You should not require more than 1-2 days to get its functionality implemented into your app. There are only 5 calls to create, configure, process and destroy the DIRAC core object – it is really that easy. We recommend you check out our iPhone sample project available from the link at the top of this page – it is fully documented and easy to understand, and compiles and runs instantly on both the device and the simulator. Think of the potential that you can unleash in your app (and the added value) by writing just half a page worth of additional code!
From Creativity to Hi-End Mastering
DIRAC2 can be used wherever speed and pitch of audio need to be changed independently of each other: for NTSC/PAL frame rate conversion, for adjusting the length of an ad to fit into a predefined time frame, for changing speed and pitch of audio tracks for remixing, or for creative effects. It does all these tasks without making your music sound unnatural or altering the stereo image and instrument localization.
Pitch Correction
DIRAC2 offers chromatic pitch correction on a equitempered scale (LE version) and on a freely definable tuning table (PRO version). This feature is very useful if you are dealing with recordings of a singer who sings off-key. All versions of DIRAC can correct flat or sharp notes automatically so they fall on the nearest semitone. The PRO version also allows setting the pitch manually which allows playing the pitch corrected audio like a synthesizer. PRO also allows for formant corrected natural pitch correction for utmost audio quality.
Upgrade to the Full Featured iPhone PRO Version
DIRAC2 LE is available entirely for free. The LE version comes with only 2 restrictions:
- It only allows one audio channel per instance
- It only supports 44.1 and 48 kHz sample rates
For most applications in free apps or test projects these restrictions don’t make a difference. On the contrary – the LE version lets you try all features for free and you can easily determine whether this product integrates well with your app. You can tell how convinced we are that you will like it – and when you’re ready to upgrade to the PRO version you can easily do so by signing a licensing agreement with us.
If you are processing individual musical tracks (different instruments, voice, drum loops) the LE version will work best for you. If you need more control and phase locked stereo processing the PRO version will probably suit your needs better.
The licensing fee is a non-recurring, up-front licensing fee. It covers the iPhone platform for an unlimited number of products and an unlimited period of time. 1 year of tech support is included, as are all updates that are made available for version 2.
What’s New in Version 2?
Version 2 of DIRAC has been optimized for both speed and quality. Its preview mode is now twice as fast as in earlier versions, making it realtime on almost all of today’s computer platforms. It’s quality is simply amazing: if you have tried other tools that do time stretching you might have noticed their harmonic distortions or reverberation even at low stretch ratios. DIRAC2 adds none of these artifacts for typical stretch ratios. Version 2 also comes with a new formant correction engine that reproduces the tone of instruments and voice even more faithfully than previous versions.