AI offers this, though it may not be 100% accurate...
"You can tweak bass and treble on a track in NCH MixPad by using the Graphic EQ (equalizer) effect. Open your desired audio file in MixPad, select the track, and click the 'Effects' button to access the Effects dialog. Then, choose 'Graphic EQ' from the effects list and add it. Adjust the lower frequency sliders upward to boost the bass, and the higher frequency sliders to enhance the treble. It's best to make small changes (for example, a 3 decibel increase) for noticeable but controlled results. Listen as you adjust for best accuracy.
For MIDI tracks, MixPad allows editing with its built-in MIDI editor. You can assign instruments and channels, and adjust parameters within the MIDI editor. However, to tweak bass and treble specifically for MIDI, you’d typically adjust the instrument’s sound parameters, use EQ on the audio output of the MIDI track, or route the MIDI output through a virtual instrument with EQ controls. Once converted to audio, you can apply the Graphic EQ as described above.
Steps for Audio Tracks
- Open audio track in MixPad.
- Select the track and click 'Effects'.
- Add 'Graphic EQ'.
- Slide lower bands up for bass, higher bands up for treble.
- Make small adjustments and listen in real-time.
Steps for MIDI Tracks
Edit MIDI clips using MixPad's MIDI editor.
If tweaking bass and treble means changing instrument sound, use the instrument’s filter or EQ feature.
Route MIDI to a virtual instrument/plugin with EQ, or export to audio and apply MixPad's Graphic EQ as above.
This enables precise control of both bass and treble, whether working with audio or MIDI sources within MixPad.: