Audacity Forum

This plug-in is a fast peak limiter with look-ahead. Rather than "wave shaping" (as the soft clipping limiter does), this limiter is a very fast compression effect. It is designed to limit short peaks in the waveform (transient peaks) which will then allow the track to be amplified more wi...

22050 Hz is too low really for good quality sound.
For music you really shouldn't go below 44100 Hz.

Is the "numark mixdeck" a USB device?

It sounds like you are picking up some electrical interference from somewhere. Try moving your laptop to another room (or another house), run the laptop on battery power and see if the noise becomes less (or more). The recording volume could do with being about 10 dB higher (adjust the level on the ...

How does it sound if you export as a WAV file?

(I agree that the sound quality is poor, but it doesn't sound like a problem caused by MP3 encoding)

Edit menu > Change Pitch

No Audacity can't do that.
It is recommended that you Export your final mix when the project is complete, then you don't end up with hundreds of Projects. Audacity Projects are not are good format for long term storage. They are designed as a working format rather than an archiving format.

nigeldodd wrote:I find gverb etc rather artificial.

There's plenty of other Reverb effects that work with Audacity.
For example, a popular free reverb for Windows is Anwida DX Light. A couple of popular ones for Linux include Calf Reverb and Freeverb.

Check in "Device Manager" (Right click on My Computer > Properties > Hardware > Device Manager) that there are no conflicts (no yellow question marks or Red "X"s. Assuming that OK, Open Audacity and look in "Help Menu > Audio Device Info". Copy and paste the contents of...

What version of Windows are you using?