How To Fix Weak Voice or Cheap Microphone With Audacity


Some Ideas On Improving Your Weak Voice using Audacity Plugins:

Most of the audio you need is in the the recording already, just at the wrong relative loudness. Also there are possibly some scratchy or squeaky frequencies are not wanted.
The Audacity effect plugins usually allow a preview, you select a portion of wave form and you can hear try it and make adjustments.

A graphic equalizer plugin is included in Audacity as downloaded.
 

The equalizer has slider controls for different frequencies.
Try dropping everything below 600 Hz  sloping down as the freq is lower, very low at 5k down, Since cheap mics sometimes dont’t capture the low frequencies, turn it back up or even boosting a little in the 300 to 600Hz range until you find a spot that adds to the clarity. 
 
 
A touch of light reverb using the reverb audacity plugin will make a big difference.
 
Using Effects / Pitch / Shift you can drop the pitch of the recording just a little without changing the tempo.(speed) Tends so sound distorted so not my favorite.

Roll off the highs starting at arourd 10,000Hz
You may need to give a little boost at 5KHZ and at 2 KHz,

You can use a Chorus plugin which fill in the voice.
You could copy the track if mono, apply different equalizer settings to each track. Make your voice richer by offsetting the timing of the tracks in relation to each other very, extremely slightly. For mono combine the tracks when the sound is right.




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