Speech-to-Song Reference

Return the repetition-based speech-to-song illusion and its limitations.

Description

The speech-to-song illusion changes the percept of repeated speech without changing the recording.

The speech-to-song illusion changes the percept of repeated speech without changing the recording. Listener and phrase features affect the result.^[1]

Return the repetition-based speech-to-song illusion and its limitations.

When to use Speech-to-Song Reference

Use this tool to return the repetition-based speech-to-song illusion and its limitations.

Choose a supported reference topic, run an input-free reference with an empty object, or prepare the measured values and caller-supplied test records requested. Keep acoustic metrics, frequency, units and test conditions consistent.

How to use Speech-to-Song Reference and understand its results

Choose a supported reference topic, run an input-free reference with an empty object, or prepare the measured values and caller-supplied test records requested. Keep acoustic metrics, frequency, units and test conditions consistent.
Enter topic using the field table and calculation rules, then run the tool.
Read source, statement, topic. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
topic	Reference topic to return.	string; one of "phenomenon", "features", "caution"	Required

Choose an exact topic enum from the input table and run the lookup. The implementation selects a fixed local entry and returns source, statement and the selected topic. Matching is case-sensitive without trimming or free-text search.

result=stored entry for selected topic

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
source	Source used for the reference statement.	string
statement	Narrow reference statement for the selected topic.	string
topic	Selected reference topic.	string; one of "phenomenon", "features", "caution"

json

{
  "input": {
    "topic": "phenomenon"
  },
  "output": {
    "source": "Diana Deutsch speech-to-song research",
    "statement": "Repeated presentation of a spoken phrase can cause it to be heard as sung without changing the recording.",
    "topic": "phenomenon"
  }
}

Limitations and assumptions

No sound is played, illusion demonstrated or listener assessed. The source is a stored bibliographic label, not a fetched document; statements are not refreshed at runtime.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Extremely large text inputs are rejected. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Shepard Tone Reference: Return the construction and perceptual limitation of the Shepard-tone pitch-class illusion. For a complementary task, use Octave Illusion Reference: Return the two-channel pattern and localization cautions of Deutsch’s octave illusion.

References

Speech-to-Song Reference — tool.io

Similar or alternative tools

Shepard Tone Reference
Return the construction and perceptual limitation of the Shepard-tone pitch-class illusion.
Octave Illusion Reference
Return the two-channel pattern and localization cautions of Deutsch’s octave illusion.