A system for generating voice source signals that implements the transformed LF-model parameter control
File Type:
PDFItem Type:
Conference PaperDate:
2023Access:
openAccessCitation:
Wang, Zihan, Gobl, Christer, 'A system for generating voice source signals that implements the transformed LF-model parameter control', INTERSPEECH 2023 20-24 August 2023, Dublin, IrelandDownload Item:
Abstract:
This paper describes a system which fully implements the
transformed LF glottal flow model, incorporating also the
often-overlooked k-factors. A problem with the original
proposal is that the global waveshape parameter Rd, central to
the transformed model and used to predict some of the other
parameters, cannot be directly controlled. Instead, a stylisation
of the model was used to indirectly control Rd. However, this
approach can yield substantial errors in the Rd value of the
pulse, thus undermining the usefulness of the model. To
overcome this problem, an iterative algorithm is presented,
which ensures that for a given Rd input value, a pulse with that
Rd value will be produced. Using this new Rd control, it
transpired that some of the original parameter predictions give
rise to combinations of values that are incompatible with the LF
model. Modifications to the original predictions of the Rk
parameter were incorporated to ensure model conformity.
Author's Homepage:
http://people.tcd.ie/cegobl
Author: Wang, Zihan; Gobl, Christer
Other Titles:
INTERSPEECH 2023Type of material:
Conference PaperAvailability:
Full text availableKeywords:
LF model, Rd parameter, Glottal flow, Voice source, Newton-Raphson, IterationMetadata
Show full item recordLicences: