No we’ve seen how to filter a triangle wave to get close to a sine wave. During this tutorial you were also able to understand how a filter can be used to generate a sine wave with the self-resonating feature. (Remember those best values to use are FRQ: 52.70 and TRK: +32)
Sub Bass octave -2
If you set a spectrum to see what’s happening frequency wise it’s better because you have a visual idea where the sound falls frequency wise. You will see more information in preceding post to get started. Set yourself up with your Analog Four in the range of our Sub Bass.
Analog Four settings
It’s a common practice to write a piece of club music between the keys of E and A#. This is important to know because the notes between E and A# are able to translate the sub bass information correctly in a live venue PA System. Remember to not go lower than 40hz because this will add mud to your sound when playing live.
Your Analog Four Poly config and Sound settings will be important for this tutorial, I encourage you to try Legato, Glide and Unison 2 voices. In this kind of sound it is good to remember the amount of gain is lost from filtering the triangle wave.
Oscillator 1 settings
We will use a triangle wave and filter the odd harmonics. Pay attention to the settings. Try first to set TUN to -12, play some notes and activate the SUB OSC to -1octave … sound Weird right ?
This is happening because the TUN settings are set too low
Keep the Main Oscillator high enough to get a pleasant Sub OSC, we shouldn’t worry about the sound sounding more present in the low mid range because we can always use the filter to fine tune afterwards.
(Note: You can only use the Sub OSC too and deactivate the Main OSC but here we want a type of sine wave in our sound)
Oscillator 2 settings
We are going to make our sub bass tone a little more interesting by mixing a little bit of a low 303 sound in our sine wave bass.
OSC RETRIG
Filter settings
Now that’s where things become more interesting
Ladder filters can shape the sub bass. This is done by removing unwanted frequencies of the raw waveforms and it will make our sound more of a bass sound now. If we play in the note range of the sub bass yeah you can understand how easily a ladder filter does this. Now that we understand the concept of a ladder filter then what is the purpose of the Multimode Filter 2? In this example Multimode Filter 2 can enhance our very low frequencies in a similar way of using an EQ.
Amp Envelope
(Remember we sculpt our sound relative to its nature)
Don’t forget what I said earlier. I want to play a sustained sub bass sound :
Filter Envelope
What we can do from here :
First we can make our sound more smooth by lowering the Track Volume and Amp volume… it will need a bit of gain after so you should probably fine tune it to your preference. At max level the sound is a bit noisy. The better stating value to work with for sub bass is 90-100. This gets the sub bass in a more musical sound that is clean and very effective. It’s easier to work with a patch that has lower track values first then incrementally raise the volume later rather than starting from Max level and cutting down gradually.
