diff --git a/src/orca/sound_generator.py b/src/orca/sound_generator.py
index b8a79df..e27a88f 100644
--- a/src/orca/sound_generator.py
+++ b/src/orca/sound_generator.py
@@ -307,11 +307,9 @@ class SoundGenerator(generator.Generator):
         # Reduce volume as pitch increases.
         volumeMultiplier = 1 - (percent / 120)
 
-        # Adjusting so that the initial beeps are not too deep.
-        if percent < 7:
-            frequency = int(98 + percent * 5.4)
-        else:
-            frequency = int(percent * 22)
+        octaveStart = 261.6 # middle C
+        ratio = percent * 0.01
+        frequency = octaveStart + octaveStart * ratio
 
         return [Tone(duration, frequency, volumeMultiplier, Tone.SINE_WAVE)]