Audacity Forum

That will be "dither noise" and is because, by default Audacity processes in very high quality 32-bit float format, but you are Exporting in a lower quality format (probably 16-bit). 16-bit audio is not able to reproduce audio below about -80 dB without introducing severe distortion. In te...

IAmTheBlackWizards wrote: Both projects "can't be found", and are "unable to open".

What is the actual error message?

In that case you may be best to get a USB audio interface that has stereo line-level inputs.
Laptop PCs usually have poor quality microphone inputs only, and often this input is mono.
There are some sound card reviews here: http://forum.audacityteam.org/viewtopic.php?f=27&t=9477

If you're using Audacity 1.2.x you need to be very careful about using only standard alpha-numeric characters in file names, track names and metadata. Audacity 1.2.x does not support Unicode characters. Also, file names must only contain "legal" characters, so avoid using slashes, back-sla...

I assume there is no way with a future Nyquist enhancement that this plug-in could add its envelope points to the waveform so you could have the best of text and mouse input? Nyquist support for envelope points is on the "wish list" http://forum.audacityteam.org/viewtopic.php?f=39&t=3...

The mixer toolbar in Audacity 1.2. does not work on Windows 7 due to the different way that Win 7 handles audio devices.
This is one of the reasons why Audacity 1.2. is not recommended for Win 7.
Upgrade to Audacity 1.3.13 http://audacityteam.org/download/

Seriously? Yes, seriously. If your sound system has stalled, then rebooting is the easiest way to reset it. If you've tried that and the problem persists, then we can look at other issues, but you will need to give a lot more information about your set-up, including which version of Windows, what s...

I've made a note in the original topic pointing to this plug-in.
I like, and found it educational, the compact way that you've reused the (cut) function as both a high order low-pass and high-pass filter.

Update: Edgar-rft has developed the code further and created a plug-in for making silent subliminals which he has posted here: http://forum.audacityteam.org/viewtopic.php?f=39&t=58548 The code in Edgars plug-in is a little more complex than the examples in this thread, but has the added convenie...

No Audacity 1.2.x - the 1.2 series is ancient and known to have problems on modern systems.
Try Audacity 1.3.13: http://audacityteam.org/download/