diff --git a/libctru/include/3ds/services/csnd.h b/libctru/include/3ds/services/csnd.h
index 9264a27..e3258a0 100644
--- a/libctru/include/3ds/services/csnd.h
+++ b/libctru/include/3ds/services/csnd.h
@@ -147,6 +147,10 @@ void CSND_SetCapRegs(u32 capUnit, u32 flags, u32 addr, u32 size);
 Result CSND_SetDspFlags(bool waitDone);
 Result CSND_UpdateInfo(bool waitDone);
 
+/**
+ * @param vol The volume, ranges from 0.0 to 1.0 included
+ * @param pan The pan, ranges from -1.0 to 1.0 included
+ */
 Result csndPlaySound(int chn, u32 flags, u32 sampleRate, float vol, float pan, void* data0, void* data1, u32 size);
 
 void csndGetDspFlags(u32* outSemFlags, u32* outIrqFlags); // Requires previous CSND_UpdateInfo()
diff --git a/libctru/include/3ds/services/y2r.h b/libctru/include/3ds/services/y2r.h
index 62cf3bf..613336c 100644
--- a/libctru/include/3ds/services/y2r.h
+++ b/libctru/include/3ds/services/y2r.h
@@ -233,7 +233,7 @@ Result Y2RU_GetTransferEndEvent(Handle* end_event);
  * @param src_buf A pointer to the beginning of your Y data buffer.
  * @param image_size The total size of the data buffer.
  * @param transfer_unit Specifies the size of 1 DMA transfer. Usually set to 1 line. This has to be a divisor of image_size.
- * @param transfer_unit Specifies the gap (offset) to be added after each transfer. Can be used to convert images with stride or only a part of it.
+ * @param transfer_gap Specifies the gap (offset) to be added after each transfer. Can be used to convert images with stride or only a part of it.
  *
  * This specifies the Y data buffer for the planar input formats (INPUT_YUV42*_INDIV_*).
  * The actual transfer will only happen after calling @ref Y2RU_StartConversion.
@@ -245,7 +245,7 @@ Result Y2RU_SetSendingY(const void* src_buf, u32 image_size, u16 transfer_unit,
  * @param src_buf A pointer to the beginning of your Y data buffer.
  * @param image_size The total size of the data buffer.
  * @param transfer_unit Specifies the size of 1 DMA transfer. Usually set to 1 line. This has to be a divisor of image_size.
- * @param transfer_unit Specifies the gap (offset) to be added after each transfer. Can be used to convert images with stride or only a part of it.
+ * @param transfer_gap Specifies the gap (offset) to be added after each transfer. Can be used to convert images with stride or only a part of it.
  *
  * This specifies the U data buffer for the planar input formats (INPUT_YUV42*_INDIV_*).
  * The actual transfer will only happen after calling @ref Y2RU_StartConversion.