Audacity Forum

Ensure that you are using the current version of Audacity (2.1.3 at time of writing) and you have installed it according to the instructions: http://www.audacityteam.org/download/mac/
Do not attempt to run Audacity directly from the DMG.

I Hope the Version 2.2 would be release soon We all do ;) there was no date It is scheduled for August, though until testing is complete there can be no exact forecast. here should be a topic for new versions reviews Feedback about alpha builds can be given as new posts in this section of the forum...

This does not add up. When using Jack, Audacity and the recording source are effectively isolated from each other. "Hardware -> ALSA -> Jack = constant audio stream" Audacity then taps into that audio stream, and has no interaction with ALSA or the hardware. This would indicate that the no...

Audacity is not designed for real-time analysis and cannot display spectral analysis in real time.

Is the buzzing accompanied by a huge number of xruns reported in QJackCtl?
Did you ever tell us what the device is that you are recording with?

For effect processing, a multi-threading strategy that has been considered by Audacity's developers is to process stereo tracks as two threads, one per channel. Currently there are no developers working on this, though I think there's a good chance that this approach could be taken at some future ti...

Multi-threading LAME is problematic because the "Bit Reservoir" requires that LAME runs as a single thread. Disabling the Bit Reservoir negatively affect encoding quality. There was a project a few years ago (https://hydrogenaud.io/index.php/topic,73790.0.html) that claimed to provide mult...

Windows will (on some machines) allow the recording level to be adjusted, but this is done by scaling the digital audio data after it has entered the computer. In other words, it is identical to applying Audacity's "Amplify" effect after recording. Given that this is the case, why can't y...

Yes, the light blue one.
Check in the Windows Sound Control Panel and ensure that it is enabled.

I've read your first post three times and I'm still not clear what problem you are having? Is the recording level too high? Too low? Something else? Does it sound distorted? What problem are we trying to fix?