Sonar 8.5 Producer: Best Method for Noise Reduction/Elimination

I have these recordings I made with a device that I'm not sure what it's called. All I know is, I think it's a microphone or some kind of line-in device. What I know as far as specifications is that it has a 1/8-inch jack, like what you would find on a transistor radio pair of headphones on one end, and the other end has a circular or maybe sphere-shaped piece of plastic with a suction cup on the bottom. I put the 1/8-inch plug into a 1/4-inch adapter, then plug that into my audio interface, then I put the suction cup sphere side onto the back of my phone near the ear piece. However, when I record anything from my phone, I seem to hear this buzzing noise throughout the recording, like a mains hum. So this brings me to my question. Are there any good noise reduction plugins that would work with Sonar? Something that would allow me to remove the buzz and hum, without destroying the quality of the recording? Maybe something like Tone Boosters, which was recommended to me by one of the forum members when I was looking for a speaker simulator to make recordings sound like they were coming out of a clock radio. Though I'm not sure that's the same.

I get a similar thing when using my condenser mic with my VoicePrism plus.
 
It's pretty noticable during silence, but you can't hear it when I'm singing.
 
Using the Gater style-dial effect on the pro-channel (as the very first module) fixes it for me, although any noise gate would do.
 

azslow3
You can try ReaFIR. It is a free plug-in from Cockos (REAPER developers): https://www.reaper.fm/reaplugs/
It should work in any DAW.
 
You can read how to use for noise reduction f.e. here: https://www.homebrewaudio.com/reafir-madness-hidden-noise-reduction-tool-in-reaper/
 

Does this plugin have an interface that is accessible to screenreaders like JAWS?

I'm trying the plugin Reafir in Sonar, and unfortunately, the noise reduction literally makes my voice sound like it's under water! Another setting gave me nothing but silence, as if my voice disappeared. Is there something I'm doing wrong?

azslow3
When you use it in subtract mode, by default it works as the noise elimination. Depending from the noise level, that can significantly change the signal as well, up to making it very bad.
But before you move to other solutions, are you sure you have applied it correctly? You need to play a recording with noise only and automatic build profile option set. And then unset that option. If it was on even a part of a second when real signal was played, the plug-in will eliminate that signal from the whole recording.
 
Listen this video for expected results: https://www.youtube.com/watch?v=31phzT7pxkk
I use it for speech without adjustments, but my noise level is low. In the tutorial, manual adjustment is demonstrated. Unfortunately, it is not accessible. But you can try to do the same. The graph is a big area under build profile option. So if you position mouse to that option and move it by hand a bit lower, it will be there. NVDA say "ReaFIR" when that area is reached after it was over the option. With ctrl pressed, click and drag up and down.
 
Alternatively, you can rise the track gain after building the profile. I think the effect should be similar.
 

The only problem is, I don't use a mouse. I use the JAWS cursor with keyboard commands. When I set the settings with the JAWS cursor in tanumber of configurations, including -150Db, all in Subtract mode, the sound of my voice is under the water.