MusicianCV · TR

Phase cancellation

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Properties of sound

Equal sine waves half a cycle apart sum to zero. With two broadband microphone recordings, the result varies with frequency.

Example

+1 + (−1) → 0

Phase cancellation

+1 + (−1) → 0

Try it

Which relationship should you listen for when reading the diagram?

AnswerEqual sine waves half a cycle apart sum to zero. With two broadband microphone recordings, the result varies with frequency.

Related topics

Same note, different timbre

References

Music Theory for the 21st-Century Classroom

Subject-expert review pending.