Filter

Filter is an EQ or equalizer module. It is very simple to use and give us many many cool results.

Every sound we hear is made up of a range of frequencies. These frequencies can be very low like 808 drum sounds or very high like a cymbol or a bird song. An equalizer lets us manipulate these frequencies to enhance some and deduce others. Filter is Helm's equalizer.

The graph in the middle of Filter provides us with a visual means of understanding what Filter is doing to our sound. The line graph shows where sounds are brought up in volume or reduced.

Helm provides us with some EQ shapes to use at the top of the graph to manipulate. It also gives us sliders along the top, right and bottom of the graph. We can manipulate the graph line to alter the sound profile. This is a trial an error adventure so have some fun playing.

Helm also provides some controls on the right: Drive, Envelope Depth and Key Track.

Drive adjusts the gain level of your sound as it enters the filter. Both Envelope Depth and and Key Track subtly change the behaviour of the Filter. We review these in the video tutorial, but playing to hears its effect is a good idea. For more technical details on these two controls you can also refer to the manual - http://tytel.org/static/docs/helm_manual.pdf

As with all the modules in Helm, the Filter is meant to be used in coordination with other modules to create unique sounds. Explore what this and all the other modules have to offer you.

I hope you have enjoyed this video tutorial on Helm. There will be more tutorials to follow.
Cheers,
@buckydurddle

Learn Helm Series

If you would like to learn how to use the open source sound recording and editing software Audacity then have a look at these tutorials:
Helm Introduction Video
Helm 1st Oscillator Video Tutorial
Helm 2nd Oscillator Video Tutorial
Helm - Cross Modulation
Helm - Arpeggiator
Helm - BPM Metronome
Helm - Reverb
Helm - Delay
Helm - Mixer
Helm - Feedback
Helm - Distortion
Helm - Stutter
Helm - LFO
Helm - Amplitude Envelope

Learn Audacity Series

1 How to Create a New Audacity Project
2 How to Open or Import Audio Files in Audacity
3 What are Audacity Tracks
4 Audacity Transport Controls
5 How to Save an Audacity Project
6 How to Record
7 How to Set Input Volume Levels8 How to Export MP3 and WAV Files
9 How to Select and Delete Sound
ACTIVITY 1 - My First Recording
10 How to use Undo and History in Audacity
11 How to Use the Zoom Tools
12 How to Use the Time Shift Tool
13 How to Use the Change Pitch Effect
ACTIVITY 2 - Make Your Voice Sound Like a Chipmunk
14 How to Use the Fade In & Fade Out Effects
15 How to Download Sound Samples from the Internet
16 How to Use the Amplify Effect
17 How to Edit Metadata
18 How to Multitrack Record
19 How to Use a Click Track
ACTIVITY 3 - Multitrack Recording in Audacity - Beatbox
20 How to Make Silence
21 How to Use the Change Tempo Effect
22 How to Use the Equalization Effect
23 How to Reverse Sound
24 Stereo Mono
ACTIVITY 4 - How to Mess Up a Piece of Music
25 How to Remove Vocals from a Recording
SETUP - How to Install the LAME Encoder

Logo - http://tytel.org/helm
Logo - https://www.audacityteam.org/

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