Online Audio Mixing With Low Pass Filters

Two common phrases in online audio mixing are high and low pass filters. What do they mean and how can you use them to perfect your online audio music mixing?

What are Low Pass Filters?

A low pass filter is a mixing filter that attenuates unwanted high frequencies in a mix. If an online audio mixing engineer sets the cutoff frequency at 12dB, any high frequency that is below 12dB will be cut off. On the other hand, those desirable frequencies that are 12dB and above will be allowed to pass through.

Low pass filters can trim out bad frequencies from low end audio spectrum. For example, you can use low pass filters to remove dissonance from a low-frequency sub microphone.  

Generally, low pass filters can be used to;

  • Eliminate unnecessary elements in music
  • Give your mix more dynamics
  • Add harmony to your vocals and instruments
  • Balance mix vocals
  • Add more color to your mix

Getting rid of extraneous elements

Low cut frequencies help you trim out non-musical elements when online audio mixing. When we mix music, we usually focus on the good part of the song. It is easy to overlook unnecessary elements in music like;

  • Sibilance
  • Hiss floating
  • Muddiness

These unnecessary frequencies, if not fixed, will choke your high frequencies ending up in a lackluster sound.

Add dynamics to online audio mixing

Dynamics in a mix refers to the perceived distance of sounds or vocals in our tracks. Pass filters help us tone down specific sounds while we give other sounds prominence.

Think of yourself in a club with booming music playing. You try to converse with your friend but your voice is not audio enough. The same happens when other musical or vocal elements in our mix override the main sounds we want our audience to hear.

How do you fix this? With a low pass filter. A low pass filter can help you;

  • Turn down the level of specific instruments
  • Push instruments to the back of the mix
  • Filtering top ends

Doing this can help you turn down loud instruments to enhance vocal clarity. If you are mixing a jazz track, pulling down the bass guitar levels gives room for the clarinet to shine.

Establish harmony in sounds

Low pass filters can be used to space out your instruments. This helps reduce the class between sounds or vocals. We’ll give an example.

If the instruments in your mix are competing to be heard, the overall mix will sound muddy and cluttered. Anyone with little online audio music mixing experience will be tempted to amp up the top ends to make the vocals clearer. But this will only make the mix too bright.

A low pass filter can help you fix issues in your lows, highs, or mids. If the highs are amped up and squashing your mids, turn them down so they balance with the mids. Similarly, if your lows sound muffled, boosting them with low pass filters will restore harmony with your mid ranges.

One quick and easy way to monitor harmony in your mix is through online reference mixing. This helps map out your tonal balance control and know where to make the changes.

The bottom line, filling out your mix-frequency spectrum achieves harmony in your vocals or instruments.

Balance your lead vocals and BGVs

Imagine being in a live concert and the lead singer’s voice is getting muffled by the background singers. It won’t be a crowd-moving concert at all.

Working with one or two vocals in online audio mixing is easy. But if you have multiple voices competing for the same frequencies, your overall vocals will sound crowded. Luckily, you can create vocal harmony with online audio music mixing filters.

Create a low pass filter on the background vocals. Tone them done so that they only shadow and not overwhelm the lead vocals. You may have to make more cuts through your audio spectrums for your vocals to sound more dynamic.

If there are too many vocals cramming up your mix, consider reducing them

Add punchiness to your mix

Besides cleaning up bad frequencies, low pass filters can be used to bump up the sonics in your mix. If you notice the harmonics in your mix sound a bit dull, you can give them more energy with a low pass filter.

Simply load a low pass filter right where the harmonics are dulling. Push the filter band up to give more timbre to the harmonics. Don’t go too far lest you affect your mid ends.

Work with an online audio mixing professional today

Working with low pass filters can be a bit confusing the first time. It is also possible to go overboard with filters if you are not mixing with processional monitoring speakers. If you use earphone or monitoring headphones to check your low pass filter effects, you need as second pair of ears to listen to your mix.

Furthermore, after ours of mixing, it can be hard to spot those filter errors in your mix. Our sensitivity to spotting bad frequencies in the mids and highs dwindles the more hours we spend in front of our DAWs.

Which is why you should get an online audio music mixing engineer to help you. A professional online audio mixing engineer will give your mix a second listen and point out the errors you made.

At Mr Mix and Master, we can help clean up the bad frequencies in your mix to improve the end sounds. Our in-house audio engineer will use low pass filters to professionally balance your vocal dynamics, harmonize your instruments, and add timbre to your sonics.

We are a RIAA Diamond Certified online mixing house with over 48 platinum awards. Our mix and master engineer has produced songs nominated for billboard charts. Mr Mix and Master has worked with top celebrities in the music industry.

Yet, we still keep our online audio mixing services affordable. Are you struggling with your getting your mix right? Call us today and let a professional online audio music mixing engineer help you achieve a release-ready end sound.