{"doi":"10.1044/jshr.3202.451","title":"A Voice Accumulator—Validation and Application","abstract":"<jats:p>Studies of vocal behavior under natural conditions require suitable techniques for obtaining records of voice use. We describe the operation of a newly designed voice accumulator that allows registration of fundamental frequency and phonation time during a 12-hour period. The device is based on microprocessors and allows accumulation of the voice fundamental frequency within 60–600 Hz. The voice signal is picked up by a contact microphone attached to the front part of the neck. Analysis of fundamental frequency distribution and phonation time is made on a personal computer. Validation of the device shows it to provide accurate measurements of fundamental frequency, although it tends to underestimate phonation time. In a field test, the accumulator was used to analyze vocal behavior during two work-days in a group of nurses and a group of speech pathologists. Overall, the speech pathologists had a lower fundamental frequency level and higher values of phonation time than the nurses. These field results confirm the validation of the voice accumulator.</jats:p>","journal":"Journal of Speech, Language, and Hearing Research","year":1989,"id":655880,"datarank":0.6190701577567639,"base_score":4.127134385045092,"endowment":4.127134385045092,"self_citation_contribution":0.6190701577567639,"citation_network_contribution":0.0,"self_endowment_contribution":0.6190701577567639,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":61,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1712105,"name":"Olle Brink","orcid":null,"position":1,"is_corresponding":false},{"id":1712106,"name":"Anders Lofqvist","orcid":null,"position":2,"is_corresponding":false},{"id":1712104,"name":"Ann-Christine Ohlsson","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"A Voice Accumulator—Validation and Application","abstract":"<jats:p>Studies of vocal behavior under natural conditions require suitable techniques for obtaining records of voice use. We describe the operation of a newly designed voice accumulator that allows registration of fundamental frequency and phonation time during a 12-hour period. The device is based on microprocessors and allows accumulation of the voice fundamental frequency within 60–600 Hz. The voice signal is picked up by a contact microphone attached to the front part of the neck. Analysis of fundamental frequency distribution and phonation time is made on a personal computer. Validation of the device shows it to provide accurate measurements of fundamental frequency, although it tends to underestimate phonation time. In a field test, the accumulator was used to analyze vocal behavior during two work-days in a group of nurses and a group of speech pathologists. Overall, the speech pathologists had a lower fundamental frequency level and higher values of phonation time than the nurses. 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