DIRAC Version 2.2 Available
December 8th, 2009 – The DSP Dimension is proud to present version 2.2 of its critically acclaimed DIRAC2 time stretching and pitch shifting software that enables developers to include the ability to change the speed and pitch of voice, instruments and music in their applications. Version 2.2 fixes the following issues and is a recommended for all users of the software on all platforms:
v2.2.0 [0912080900]
- Fixed volume offset for certain quality/lambda settings
- Fixed excessive bass and DC response for frequencies < 20Hz
- Fixed bug that caused the formant scaling to be always reciprocal to pitch in STUDIO
- Optimized kDiracLambda1 (voice mode)
The new version of the free LE variant is available from the DSP Dimension download page at http://www.dspdimension.com/download/
Releasing DIRAC2 Version 2.1 With Pitch Correction
November 9th, 2009 — The DSP Dimension is happy to announce version 2.1 of DIRAC. Version 2.1 is available for download as of today and fixes several bugs that could affect performance and precision. Most importantly, polyphonic formant correction could produce unpredictable results with previous versions and pitch shifting could sometimes affect the length of the processed audio. All these bugs are fixed in version 2.1 and due to popular demand we have upgraded and re-enabled pitch correction in the latest version. DIRAC LE on all platforms offers pitch correction on a equitempered scale while the PRO version adds support for arbitrary tuning tables and direct pitch manipulation. Please see the README file that comes with DIRAC and the DIRAC product page for more information.
The DSP Dimension Releases DIRAC2 on Windows, MacOS X, Linux and iPhone
Mainz, Germany, October 23rd, 2009 — The DSP Dimension is proud to announce the release of version 2 of its much anticipated DIRAC2 Time Stretching and Pitch Shifting object library now available for Windows, MacOS X, Linux and the Apple iPhone. DIRAC2 is available as both a commercial object library offering unlimited sample rates and phase locked multichannel support and as a free single channel, 44.1/48kHz LE version.
Our free DIRAC2 LE project offers the full audio quality of the commercial version, is fully documented and easy to understand, and compiles and works right out of the box. 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 without even investing a single dollar.
About DIRAC2
DIRAC2 redefines the limits of what todays’ technology can do for your application if you want to change the speed and pitch of music independently without sacrificing quality. 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.
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. It does all these tasks without making your music sound unnatural or altering the stereo image and instrument localization.
Check out DIRAC2 today on http://www.dspdimension.com
The DSP Dimension Releases DIRAC2 Public Beta (Win, Mac, Linux, iPhone)
Mainz, Germany, October 6th, 2009 — The DSP Dimension is happy to announce the first public beta of its new DIRAC2 time stretching/pitch shifting library for Windows, MacOS X, Linux and the Apple iPhone. DIRAC2 is the successor of its critically acclaimed hi-end DSP solution to change pitch and speed of complex audio material such as entire mixes independently of each other and without sacrificing quality.
DIRAC’s highly optimized API makes including this library into any audio application a breeze and its superior quality makes it the choice of the pros: Autodesk/Discreet, Steinberg Wavelab and Prosoniq TimeFactory 2 are just a few examples of companies that already use DIRAC. What’s more, the powerful LE version that includes many features of the commercial version is entirely free!
Version 2 offers increased speed, a better preview mode, better formant correction, iPhone support, 64bit support and is now ANSI C callable. Since Apple is not providing the AUTimePitch AudioUnit for the iPhone, iPhone developers had to use their own methods to change pitch and speed of audio signals independently. This has now changed: DIRAC2 is available as an iPhone static library that works both in the simulator and on the device. For the first time, this brings studio quality time stretching to the iPhone platform!
As of today, DIRAC v2 for the iPhone is in public beta test and we expect to release support for its full range of platforms this week. The LE version will continue to be free, upgrades for existing 1.x licenses will also be available.
For general information on the product please visit our DIRAC page at http://www.dspdimension.com/technology-licensing/dirac/ which will also be updated to version 2 as soon as the beta test has completed.
If you want to participate in the beta test and download a fully functional beta version of the free LE version for all platforms right now you can do so from http://beta.dspdimension.com/DIRAC2-LE-beta.zip. Please contact us with any questions or problems that you might have via our contact form.
DIRAC v2 Public Beta for the iPhone Available
Mainz, Germany, October 5th, 2009 — We are happy to announce the first public beta of the new DIRAC version 2 for the iPhone. Over the past few weeks, we have received numerous requests for an iPhone version of our DIRAC time stretch/pitch shift technology, since Apple is not providing their AUTimePitch AudioUnit for the iPhone. Until now, iPhone developers had to use their own methods to change pitch and speed of audio signals independently, as no commercial grade solution was available.
As of today, DIRAC v2 for the iPhone is in public beta test and we expect to release support for its full range of platforms this week. The LE version will continue to be free and all versions will be available for Windows, MacOS X, Linux and the iPhone. Upgrades for existing 1.x licenses will also be available.
For general information on the product please visit our DIRAC page at http://www.dspdimension.com/technology-licensing/dirac2/ which will also be updated to version 2 soon. Version 2 offers increased speed, a better preview mode, better formant correction, iPhone support, 64bit support and is now ANSI C callable.
If you want to participate in the beta test and download a fully functional beta version of the free LE version right now you can do so from http://beta.dspdimension.com/iPhoneTest.zip (please see the license agreement that comes with the archive). Please contact us with any questions or problems that you might have via our contact form.
ActionScript3 Version of smbPitchShift Available
Mainz, August 27th, 2009 – Arnaud Gatouillat has posted an ActionScript3 port of our smbPitchShift code from the “Pitch Shifting Using the Fourier Transform” tutorial on his web site at http://iq12.com/blog/2009/08/25/real-time-pitch-shifting/. If you have Flash 10 installed on your computer you can run it directly off his web site in real time. Source code is also available.
The DSP Dimension Releases DIRAC 1.5, Announces qDIRAC for Mobile Devices
Mainz/Germany, May 27th, 2009 - The DSP Dimension today announces that version 1.5 of its award winning DIRAC polyphonic audio Time Stretching & Pitch Shifting solution is now available for download. Version 1.5 fixes minor problems that were present in previous versions and makes the library ANSI C-callable. Version 1.5 might require minor changes to your code due to minor changes in the API, please see the enclosed documentation for more details. The free DIRAC LE version has also been updated and can be downloaded from The DSP Dimension’s “Download” page on http://www.dspdimension.com.
The DSP Dimension also announces “qDIRAC” a new version of DIRAC optimized for mobile devices/streaming applications. “qDIRAC” is optimized for Linux and covered by the same license as the desktop version. It has a considerably smaller memory footprint, leaves allocating memory to the caller so it can preserve state information across sessions and threads and is optimized to make best use of the limited MIPS that are available on mobile/embedded devices. The DSP Dimension expects to make it available at the end of June 2009.
C# Version of Our Pitch Shifting Tutorial Code
Mainz, 24. April 2009 - We’re happy to announce that Michael Knight has kindly provided a C# version of the code accompanying our “Pitch Shifting Using the Fourier Transform” article. You can get it from here: http://sites.google.com/site/mikescoderama/pitch-shifting