diff --git a/README.md b/README.md
index b1434ea..dbdaacc 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,11 @@
 # ece45-project
 
-fuction x = envelope(input, fs, period, attack , decay, sustain, release), where attack, decay, sustain release are percentages between 0 to 1 of the period
+fuction x = envelope(input, fs, period, attack , decay, sustain, release)
+where attack, decay, sustain release are percentages between 0 to 1 of the period
+where period is the time in seconds
 
-function x = generate_wave(amplitude, frequency, phase, fs, duration, duty)
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+function x = generate_wave(amplitude, frequency, phase, fs, duration, duty)
+
+
+function  output_timedomain = Filter(input_soundin_timedomain, Fs, LOW, MED, HIGH) 
+where LOW, MED, HIGH are user-selected variables of any value
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