Off-pitch choral singers still yield a definite collective pitch

Evidence

For example, dive into the chorus effect (section 4.6), and branch out from there. You’ll read about autocorrelation. Now you have a reason to know what autocorrelation is, in order to understand how a chorus can have a definite pitch even through every singer is a little bit off pitch, or doing vibrato, and so on. — Eric J. Heller, Why You Hear What You Hear- An…, 28

Categorization

• DEFINE: Introduces autocorrelation as the mechanism explaining how mistuned voices merge into a single perceived chorus pitch.
• XREF: Chorus-effect as pitch from autocorrelation parallels the earlier reading on how silence and signal shape what we perceive.