diff --git a/src/effects/Amplify.cpp b/src/effects/Amplify.cpp
index b56355603..7a9377a7f 100644
--- a/src/effects/Amplify.cpp
+++ b/src/effects/Amplify.cpp
@@ -10,7 +10,7 @@
 *******************************************************************//**
 
 \class EffectAmplify
-\brief An Effect
+\brief An Effect that makes a sound louder or softer.
 
   This rewritten class supports a smart Amplify effect - it calculates
   the maximum amount of gain that can be applied to all tracks without
diff --git a/src/effects/ClickRemoval.cpp b/src/effects/ClickRemoval.cpp
index 60f11c975..b3a04558b 100644
--- a/src/effects/ClickRemoval.cpp
+++ b/src/effects/ClickRemoval.cpp
@@ -9,7 +9,7 @@
 *******************************************************************//**
 
 \class EffectClickRemoval
-\brief An Effect.
+\brief An Effect for removing clicks.
 
   Clicks are identified as small regions of high amplitude compared
   to the surrounding chunk of sound.  Anything sufficiently tall compared
diff --git a/src/effects/Equalization.cpp b/src/effects/Equalization.cpp
index 42b5f3441..55b1ac483 100644
--- a/src/effects/Equalization.cpp
+++ b/src/effects/Equalization.cpp
@@ -18,7 +18,7 @@
 
 
    \class EffectEqualization
-   \brief An Effect.
+   \brief An Effect that modifies volume in different frequency bands.
 
    Performs filtering, using an FFT to do a FIR filter.
    It lets the user draw an arbitrary envelope (using the same
diff --git a/src/effects/Fade.cpp b/src/effects/Fade.cpp
index 6cf4baa3d..7a9733b2b 100644
--- a/src/effects/Fade.cpp
+++ b/src/effects/Fade.cpp
@@ -9,7 +9,7 @@
 *******************************************************************//**
 
 \class EffectFade
-\brief An Effect
+\brief An Effect that reduces the volume to zero over  achosen interval.
 
 *//*******************************************************************/
 
diff --git a/src/effects/Leveller.cpp b/src/effects/Leveller.cpp
index 721e49ca7..8b2860f02 100644
--- a/src/effects/Leveller.cpp
+++ b/src/effects/Leveller.cpp
@@ -9,7 +9,7 @@
 ******************************************************************//**
 
 \class EffectLeveller
-\brief An Effect
+\brief An Effect that aims to selectively make softer sounds louder.
 
 *//*******************************************************************/
 
diff --git a/src/effects/Normalize.cpp b/src/effects/Normalize.cpp
index 798c92f41..bf1fdb53b 100644
--- a/src/effects/Normalize.cpp
+++ b/src/effects/Normalize.cpp
@@ -10,7 +10,7 @@
 *******************************************************************//**
 
 \class EffectNormalize
-\brief An Effect.
+\brief An Effect to bring the peak level up to a chosen level.
 
 *//*******************************************************************/
 
diff --git a/src/effects/Phaser.cpp b/src/effects/Phaser.cpp
index 54cfabc17..63609d395 100644
--- a/src/effects/Phaser.cpp
+++ b/src/effects/Phaser.cpp
@@ -14,7 +14,7 @@
 *******************************************************************//**
 
 \class EffectPhaser
-\brief An Effect
+\brief An Effect that changes frequencies in a time varying manner.
 
 *//*******************************************************************/
 
diff --git a/src/effects/Repeat.cpp b/src/effects/Repeat.cpp
index 951d316d9..ac44afcb7 100644
--- a/src/effects/Repeat.cpp
+++ b/src/effects/Repeat.cpp
@@ -10,7 +10,7 @@
 *******************************************************************//**
 
 \class EffectRepeat
-\brief An Effect.
+\brief An Effect that repeats audio several times over.
 
 *//****************************************************************//**
 
diff --git a/src/effects/ScienFilter.cpp b/src/effects/ScienFilter.cpp
index bc0fdc314..e65d965ec 100644
--- a/src/effects/ScienFilter.cpp
+++ b/src/effects/ScienFilter.cpp
@@ -16,7 +16,7 @@
 *//****************************************************************//**
 
 \class EffectScienFilter
-\brief An Effect.
+\brief An Effect that applies 'classical' IIR filters.
 
   Performs IIR filtering that emulates analog filters, specifically
   Butterworth, Chebyshev Type I and Type II. Highpass and lowpass filters
diff --git a/src/effects/StereoToMono.cpp b/src/effects/StereoToMono.cpp
index b07d2d829..42efc0f0c 100644
--- a/src/effects/StereoToMono.cpp
+++ b/src/effects/StereoToMono.cpp
@@ -9,7 +9,7 @@
 *******************************************************************//**
 
 \class EffectStereoToMono
-\brief An Effect.
+\brief An Effect to convert stereo to mono.
 
 *//*******************************************************************/
 
diff --git a/src/effects/Wahwah.cpp b/src/effects/Wahwah.cpp
index 04986f225..05a76af2c 100644
--- a/src/effects/Wahwah.cpp
+++ b/src/effects/Wahwah.cpp
@@ -14,7 +14,7 @@
 *******************************************************************//**
 
 \class EffectWahwah
-\brief An Effect
+\brief An Effect that adds a 'spectral glide'.
 
 *//*******************************************************************/