DocumentCode :
3157713
Title :
Transient detection with absolute discrete group delay
Author :
Gnann, Volker ; Spiertz, Martin
Author_Institution :
Inst. of Commun. Eng., RWTH Aachen Univ., Aachen, Germany
fYear :
2009
fDate :
7-9 Jan. 2009
Firstpage :
311
Lastpage :
314
Abstract :
This paper presents a new transient detection algorithm which uses the average absolute discrete group delay as a measure for the transient characteristic of sound. It shows that a bell-shaped window function performs a high-pass effect to the spectral coefficients, leading to a concentration of group delay values in the ¿-area for steady-state signals. This concentration is violated if a transient occurs. From this phenomenon, we derive a new transient detection method, improve it by a maximum order-filter, and show that it works well on percussive and tonal-percussive sounds.
Keywords :
audio signal processing; filtering theory; audio signal; average absolute discrete group delay; bell-shaped window function; high-pass effect; maximum order-filter; steady-state signals; tonal-percussive sounds; transient characteristic measurement; transient detection algorithm; Delay effects; Detection algorithms; Frequency; Information analysis; Phase detection; Pulse measurements; Shape measurement; Signal resolution; Steady-state; Transient analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2009. ISPACS 2009. International Symposium on
Conference_Location :
Kanazawa
Print_ISBN :
978-1-4244-5015-2
Electronic_ISBN :
978-1-4244-5016-9
Type :
conf
DOI :
10.1109/ISPACS.2009.5383840
Filename :
5383840
Link To Document :
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