Around 100 120 Hz you can sometimes apply a little boost (1-2 dB) to give some. It builds up in the 200 Hz - 500 Hz frequency range, so youll need to reduce that range slightly. Audacity can record live audio through a microphone or mixer. 'Low roll-off for speech' requires substantially more than 20 dB attenuation of very low frequencies to be fit for purpose.

Good settings for this plugin depend on a number of factors, from the voice, instrument or type of program material you're processing to the intended effect of the adjustment. Audacity-quality Preset curves in Graphic Eq From: Steve the Fiddle - 09:42:20 Some of the presets in Graphic Eq 'dont work' because they are inappropriate for this effect.

It implements a spectrum analyzer by displaying the audio level in each of SuperEQ's 18 frequency bands, using Histogram('audiolevels'). Cheat Sheet Equalizer (EQ) settings for voice recordings Below approx. Professional grade Parametric EQ with Unlimited Bands, Volume Mixer (per Application. Audacity uses a plugin approach for effects that modify sounds you've recorded, and the main equalizer plugin is called Equalization. Figure 5.10 Manually adjusting EQ with Audacity's Graphic EQ effect. This is a rather extreme example of what can be done with SuperEQ. So use your editor's EQ presets, but go beyond them with manual adjustments, too.

To give a very rough indication of the frequency response of the above example, here is a screenshot of an Audacity spectrum analysis of processed white noise (which should be approximately flat without equalization, allowing for low-frequency variability)

Audacity graphic eq presets