Saturday, October 16, 2010

Create Isochronic Tones Using IsoMod Audacity Plug-in

There is now an easier way to create isochronic tones. A plug-in was developed
by Steve Daulton which you can download from this

Installing the IsoMod plug-in

Once you have downloaded the plugin to your hard drive, copy it to your
plug-ins folder of the audacity program folder e.g C:\Program
Files\Audacity\Plug-Ins. Start up
audacity and it will be
available at the effects menu when you have generated a tone.

Creating an 10hz Alpha Wave Isochronic Tone with a 90hz Carier Frequency

1.    Generate a tone by clicking 'Generate' from the menu and selecting 'Tone,,,',

2.    Select 'Sine' for the Waveform, 90 for the 'Frequency/Hz', 0.6 for the 'Amplitude', and 600 for a 10 minute duration then click 'Generate Tone'

3.    Click 'Effects' from the menu and select 'Isomod'

isomod menu

4.    You will be presented by the following configuration set up.

isomod config

        'Pulse Width' must be set to 50 to achieve an isochronic tone.

       'Initial Modulation Frequency' and 'Final Modulation Frequency' is the isochronic beat you want to
target. They must be the same unless you are creating a ramp.

        "Initial Modulation Depth' and 'Final Modulation Depth' must be set to 100 to get a pure isochronic

        You can play around with 'Fade Time'. The lower the value the truer its isochronic waveform is. As
the value gets higher, the silence portion gets smaller. I find the value of 15 to be acceptable.

        That's it, you now have an alpha isochronic beat.

Ramping the Isochronic Beat

IsoMod supports ramping but you can only create it one time either going from a high frequency to a lower frequency or from a lower brainwave frequency to a higher brainwave frequency. If you're designing an
isochronic tone which ramp more than one time, you need to create several tones then just 'stitch' them together.

As an example if we want to start with 10hz alpha brainwave then ramp to 4hz thetabrainwave then back again to alpha brainwave, you need create at least 4
isochronic tones. Details may be as follows:

1.    10hz = 6min
  .    10hz to 4z ramp = 2min
  .    4hz = 6min.
       4hz to 10hz ramp= 2min

2.     Create a 10hz tone
        Open another instance of audacity and
create 10hz tone for 2min. Ramp it down with IsoMod to 4hz      
        Open another instance of audacity and
create a 6min 4hz tone
        Open another instance of audacity and
create a 4hz tone for 2min Ramp it up with IsoMod to 10hz

3.    All you have to do now is copy and paste to
create a single file. You may however need to edit the waveform in the
'stitched' portion.

That's it! Have fun and may you reap the benefits that
isochronic tones can give you.

Claim your free samples of
isochronic tones and binaural beats

Listen to
theta brainwave entrainment
using isochronic tones