Entry in LEO: Dictionary: Stimmbruch
Monolingual English dictionaries give the same basic definitions:
- A general definition regarding the action or process of mutating.
- A more specific biological/genetic definition.
- The result of the process.
- Specialist linguistic/phonetic definition.
As an example: https://www.lexico.com/en/definition/mutation
1. The action or process of mutating.
2. The changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.
2.1 A distinct form resulting from a change in the structure of a gene.
3 Linguistics Regular change of a sound when it occurs adjacent to another.
3.1 (in Germanic languages) the process by which the quality of a vowel was altered in certain phonetic contexts; umlaut.
3.2 (in Celtic languages) change of an initial consonant in a word caused (historically) by the preceding word.
See also: https://www.merriam-webster.com/dictionary/mu..., https://www.ahdictionary.com/word/search.html..., https://www.collinsdictionary.com/dictionary/...
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Objective: To determine whether the vocal folds length, along with the acoustic voice parameters measurements, can predict the moment of upcoming voice mutation and assess the process of a child’s maturation.
Clarós, P. et al. "Predicting Voice Mutation by Larynx and Voice Modifications." (2019).
The knowledge of vocal mutation is important for speech pathologists in the diagnosis and management of individuals with mutational voice disorders. However, data on vocal mutation in the Indian population are scarce and hence the present study was planned to investigate the age of attainment of vocal mutation in boys and girls from Mangalore, India, in the age range of 8–18 years.
Balasubramaniam, R. K. et al. "Voice Mutation During Adolescence in Mangalore, India: Implications for the Assessment and Management of Mutational Voice Disorders" (2017)
Introduction: The vocal mutation is the period of voice change that occurs during puberty. It is characterized by acoustic modifications and vocal instabilities that occur in both men and women.
Objective: To conduct a narrative review of published studies on vocal mutation, whether spoken or sung. A search of papers published between 1990 and 2019 in PubMed and LILACS was performed.
Results: the bibliographic review consisted of eight articles. The studies reviewed included from six to 600 subjects. The investigations were carried out in men and women in both spoken and sung voices. Overall, study data revealed that vocal mutation occurs after age 13, and that emotional repercussions may occur during this period.
Conclusion: To date, there are few published studies on changes in the voice in puberty. The vocal mutation involves various modifications in the organic, functional and emotional aspects of the individual.
Nercelles L, Centeno D. "Vocal mutation: the voice change process during puberty." (2020)