Home
Catalogue search
Refine your search:
Keyword
Creator / Publisher:
Schwenninger, Jochen (1)
Stein, Daniel (1)
Winkler, Thomas (1)
Year
Medium
Type
BLLDB-Access
Search in the Catalogues and Directories
All fields
Title
Creator / Publisher
Keyword
Year
AND
OR
AND NOT
All fields
Title
Creator / Publisher
Keyword
Year
AND
OR
AND NOT
All fields
Title
Creator / Publisher
Keyword
Year
AND
OR
AND NOT
All fields
Title
Creator / Publisher
Keyword
Year
AND
OR
AND NOT
All fields
Title
Creator / Publisher
Keyword
Year
Sort by
creator [A → Z]
'
creator [Z → A]
'
publishing year ↑ (asc)
'
publishing year ↓ (desc)
'
title [A → Z]
'
title [Z → A]
'
Simple Search
Hits 1 – 1 of 1
1
Harmonic distortion in the TETRA channel and its impact on automatic speech recognition
Stein, Daniel
;
Winkler, Thomas
;
Schwenninger, Jochen
In: Fraunhofer IAIS (2012)
Abstract:
Since its introduction in the mid 90ies, the Terrestrial Trunked Radio (TETRA) standard for digital radio broadcast has been deployed in most European and Asian government networks and public safety networks. The underlying Adaptive Code-Excitation Linear Prediction scheme employs adaptive code books which are optimized for human speech. However, harmonic distortions of the hardware are amplified as well, which we will show via spectrograms and frequency analysis. While many studies indicate that human perception neglects these distortions up to a Total Harmonic Distortion of about 1%, their impact on Automatic Speech Recognition (ASR) can be dramatic. In this paper, we demonstrate this effect on a strong recognition system for German broadcast news, using a dedicated fire fighter radio transmitter. We will dissect the influence of the hardware and the software components by analysing the word error rate, typical word substitutions and changes in the extracted features. We also suggest countermeasures to obtain a stronger ASR system in this setting.
Keyword:
automatic speech recognition
;
harmonic distortion
;
robust ASR
;
TETRA
URL:
http://publica.fraunhofer.de/documents/N-228038.html
BASE
Hide details
Mobile view
All
Catalogues
UB Frankfurt Linguistik
0
IDS Mannheim
0
OLC Linguistik
0
UB Frankfurt Retrokatalog
0
DNB Subject Category Language
0
Institut für Empirische Sprachwissenschaft
0
Leibniz-Centre General Linguistics (ZAS)
0
Bibliographies
BLLDB
0
BDSL
0
IDS Bibliografie zur deutschen Grammatik
0
IDS Bibliografie zur Gesprächsforschung
0
IDS Konnektoren im Deutschen
0
IDS Präpositionen im Deutschen
0
IDS OBELEX meta
0
MPI-SHH Linguistics Collection
0
MPI for Psycholinguistics
0
Linked Open Data catalogues
Annohub
0
Online resources
Link directory
0
Journal directory
0
Database directory
0
Dictionary directory
0
Open access documents
BASE
1
Linguistik-Repository
0
IDS Publikationsserver
0
Online dissertations
0
Language Description Heritage
0
© 2013 - 2024 Lin|gu|is|tik
|
Imprint
|
Privacy Policy
|
Datenschutzeinstellungen ändern