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Feature maps of the acoustic spectrum of the voice
KTH, Skolan för elektroteknik och datavetenskap (EECS), Intelligenta system, Tal, musik och hörsel, TMH, Musikakustik. Royal Conservatoire, The Hague, Netherlands. (Voice Acoustics)ORCID-id: 0000-0003-2497-3109
KTH, Skolan för elektroteknik och datavetenskap (EECS), Intelligenta system, Tal, musik och hörsel, TMH, Musikakustik. (Voice acoustics)ORCID-id: 0000-0002-3362-7518
2020 (engelsk)Inngår i: Journal of Voice, ISSN 0892-1997, E-ISSN 1873-4588, Vol. 34, nr 1, s. 161.e1-161.e26Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The change in the spectrum of sustained /a/ vowels was mapped over the voice range from low to high fundamental frequency and low to high sound pressure level (SPL), in the form of the so-called voice range profile (VRP). In each interval of one semitone and one decibel, narrowband spectra were averaged both within and across subjects. The subjects were groups of 7 male and 12 female singing students, as well as a group of 16 untrained female voices. For each individual and also for each group, pairs of VRP recordings were made, with stringent separation of the modal/chest and falsetto/head registers. Maps are presented of eight scalar metrics, each of which was chosen to quantify a particular feature of the voice spectrum, over fundamental frequency and SPL. Metrics 1 and 2 chart the role of the fundamental in relation to the rest of the spectrum. Metrics 3 and 4 are used to explore the role of resonances in relation to SPL. Metrics 5 and 6 address the distribution of high frequency energy, while metrics 7 and 8 seek to describe the distribution of energy at the low end of the voice spectrum.

Several examples are observed of phenomena that are difficult to predict from linear source-filter theory, and of the voice source being less uniform over the voice range than is conventionally assumed. These include a high-frequency band-limiting at high SPL and an unexpected persistence of the second harmonic at low SPL. The two voice registers give rise to clearly different maps. Only a few effects of training were observed, in the low frequency end below 2 kHz. The results are of potential interest in voice analysis, voice synthesis and for new insights into the voice production mechanism.

sted, utgiver, år, opplag, sider
Elsevier, 2020. Vol. 34, nr 1, s. 161.e1-161.e26
Emneord [en]
Voice Range Profile (VRP), Voice Register, level of the fundamental, harmonicformant interaction, spectrum balance (SB), non-linear source-filter interaction
HSV kategori
Forskningsprogram
Tal- och musikkommunikation
Identifikatorer
URN: urn:nbn:se:kth:diva-234309DOI: 10.1016/j.jvoice.2018.08.014OAI: oai:DiVA.org:kth-234309DiVA, id: diva2:1245937
Prosjekter
Fonadyn
Forskningsfinansiär
Swedish Research Council, 2010-4565
Merknad

QC 201801001

QC 20200124

Tilgjengelig fra: 2018-09-06 Laget: 2018-09-06 Sist oppdatert: 2020-01-24bibliografisk kontrollert
Inngår i avhandling
1. Mapping Individual Voice Quality over the Voice Range: The Measurement Paradigm of the Voice Range Profile
Åpne denne publikasjonen i ny fane eller vindu >>Mapping Individual Voice Quality over the Voice Range: The Measurement Paradigm of the Voice Range Profile
2018 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The acoustic signal of voiced sounds has two primary attributes: fundamental frequency and sound level. It has also very many secondary attributes, or ‘voice qualities’, that can be derived from the acoustic signal, in particular from its periodicity and its spectrum. Acoustic voice analysis as a discipline is largely concerned with identifying and quantifying those qualities or parameters that are relevant for assessing the health or training status of a voice or that characterize the individual quality. The thesis presented here is that all such voice qualities covary essentially and individually with the fundamental frequency and the sound level, and that methods for assessing the voice must account for this covariation and individuality. The central interest in the "voice field" measurement paradigm becomes to map the proportional dependencies that exist between voice parameters. The five studies contribute to ways of doing this in practice, while the framework text presents the theoretical basis for the analysis model in relation to the practical principles.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2018. s. 90
Serie
TRITA-EECS-AVL ; 2018:70
Emneord
Voice Range Profile (VRP), Phonetogram, Voice Field, Voice quality, Singing voice, Voice synthesis, Clinical voice assessment, Sound level measurement, Maximum Entropy
HSV kategori
Forskningsprogram
Tal- och musikkommunikation
Identifikatorer
urn:nbn:se:kth:diva-235824 (URN)978-91-7729-958-5 (ISBN)
Disputas
2018-10-26, Kollegiesalen, Brinellvägen 8, Stockholm, 14:00 (engelsk)
Opponent
Veileder
Merknad

QC 20181008

Tilgjengelig fra: 2018-10-08 Laget: 2018-10-05 Sist oppdatert: 2018-10-08bibliografisk kontrollert

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