Audacity Forum

The Limiter effect was added to Audacity relatively recently. Which version of Audacity do you have (look in "Help > About Audacity").

Try setting both the recording and playback devices in the device toolbar to the "hw 0:0" option.
This method can usually only be used when Audacity is the only audio app running, but it bypasses PulseAudio and is generally more stable both for playback and recording.

The Git version still fails with the same ffmpeg conflicts when built normally, but succeeded with --disable-dynamic-loading. Excellent, that was quick - you must have a faster machine than me ;) I'm not sure why, but Audacity is a lot less fussy about the FFmpeg build when using --disable-dynamic-...

Do you want 0 dB peak amplitude? Because "noise" is random, the peak value is not really a reliable measure. More usually RMS level is used for this type of thing, but a lot lower than 0 dB. The default 0.8 will generate a peak level of "about" +/- 0.8 linear (not exact, because ...

Doh, just noticed that you said "SVN version".
Audacity no longer uses SVN - that's the old, unmaintained Sourceforge repository. The current Audacity code is on GitHub, and it requires WxGTK 3.0 (preferably 3.0.2).
See: http://wiki.audacityteam.org/wiki/Developing_On_Linux

Is there a way to have a dual-display, showing both waveform and dB at the same time, for the same file? Not yet, but there seems to be some interest by at least a couple of developers for adding that as a new feature in a future version of Audacity. I agree that it could sometimes be useful. Somet...

edwinn wrote:One advantage of the machine is.. the integrated AUDIO subsystem is 64-bit. Or is that not necessarily so?

The drivers are probably written in 64-bit code, but the handling of audio data will still be a maximum of 24-bit integer.

Normal "linear" waveform view shows sample values from +1 to -1, so all (valid) samples are displayed. The equivalent numerical range for dB is 0 to -infinity. Of course we can't have an infinitely tall track, so the bottom of the range is not displayed. By default the displayed range is 0...

The FFmpeg library can be a pain as there are frequently big changes between versions that break things when trying to link. I'd suggest that you first try to build without FFmpeg (something like .configure --without-ffmpeg but check in .configure -h). If that builds successfully, do make distclean ...

I presume these are music recordings? Are they single instrument recordings or multiple instruments? Are they original recordings (voice / instrument played by you) or music that you have bought/downloaded? Are the recordings just "a bit out of tune" with each other, or are they in differe...