Audacity Forum

Playback mix This is the one that is used whenever the Play button (Transport toolbar) is used. This is the "What you hear..." part. Export mix This the one that is used whenever File > Export (or Export Selection) is used from the command bar. This is the "...what you get" part...

audacityrocks wrote: there is a high-pitched noise over everything which I think is normal computer noise

If you're using a laptop computer, try running on battery power while recording.

Right now I see the biggest annoyance being the fact that the quarter inch jacks are inputs 9 and 10 You could get a DI box, plug the guitar into the DI input and the XLR output from the DI into one of the XLR sockets. These ones may not be available in the US, but you should be able to get somethi...

Audacity does not yet have channel mapping for the recording inputs, so if you set the number of channels to record to 2, it will record channels 1 and 2. If you set it to record 5 channels, it will record channels 1, 2, 3, 4 and 5. If you need to record channels 1 and 10 then you will need to recor...

Heisennberg wrote:I used the silence tools on the negative voltages (by selectionning them) to force them to zero .

So you wanted to "delete" the negative going part of a pre-existing waveform (rectify the waveform)?
That is done very easily with the Nyquist Prompt:

Does this do what you want? Run this code in the Nyquist Prompt. Select part of an audio track where you want to generate the pulses, then open the Nyquist Prompt from the Effect menu. Copy and paste this code into the Nyquist Prompt text box. (setq hz 440) (setq bias 0) (setq level 0.5) (let ((lev ...

LADSPA plug-ins 0.4.15 installer (.exe file, 1.5 MB) - Contains over 90 plug-ins. Plug-Ins - Download additional effects and filters. LAME MP3 encoder - Allows Audacity to export MP3 files. FFmpeg import/export library - Allows Au These are all "optional extras". To Export in MP3 format y...

The full keyboard shortcut reference is here: http://manual.audacityteam.org/man/Keyb ... _Reference
See also: http://wiki.audacityteam.org/wiki/NavigationTips

The .qcp file is probably a "PureVoice" file, which is a proprietary format of http://www.qualcomm.com/ and is probably not supported by Audacity.

Oh, Steve, is there any audacity plugin that can be like a "low-pass fade-in" - it starts at a low-pass filter of your choice and gradually becomes less low-passed? When sirens spin, the sound is low-passed more as the siren rotor gets slower. The "low-pass fade" could apply to ...