diff --git a/modules/juce_audio_processors/processors/juce_AudioChannelSet.h b/modules/juce_audio_processors/processors/juce_AudioChannelSet.h
index 3bfc2c626a..6b569b86ed 100644
--- a/modules/juce_audio_processors/processors/juce_AudioChannelSet.h
+++ b/modules/juce_audio_processors/processors/juce_AudioChannelSet.h
@@ -195,6 +195,9 @@ public:
     /** Returns if this is a channel layout made-up of discrete channels. */
     bool isDiscreteLayout() const noexcept;
 
+    /** Intersect two channel layouts. */
+    void intersect (const AudioChannelSet& other)      { channels &= other.channels; }
+
     //==============================================================================
     bool operator== (const AudioChannelSet&) const noexcept;
     bool operator!= (const AudioChannelSet&) const noexcept;