Abstract
In this paper, a hybrid transform method for analysis/synthesis and coding of speech signals is proposed. A finite number of Fourier functions is used to represent frame-by-frame the selective (narrow-band) components of speech. The broadband residual is characterized by a small number of Walsh functions. An iterative algorithm, to determine the frequency and sequency components in a systematic manner, is derived. This is employed for speech coding at 16 kbit/s and 9.6 kbit/s. The hybrid transform method produces natural sounding speech which is indistinguishable from the original at 16 kbit/s and highly intelligible at 9.6 kbit/s.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 217-229 |
| Number of pages | 13 |
| Journal | Signal Processing |
| Volume | 24 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1991 |
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Keywords
- coding
- Fourier
- Speech
- transforms
- Walsh
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering
Cite this
A hybrid transform method for analysis/synthesis of speech. / Spanias, Andreas.
In: Signal Processing, Vol. 24, No. 2, 1991, p. 217-229.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A hybrid transform method for analysis/synthesis of speech
AU - Spanias, Andreas
PY - 1991
Y1 - 1991
N2 - In this paper, a hybrid transform method for analysis/synthesis and coding of speech signals is proposed. A finite number of Fourier functions is used to represent frame-by-frame the selective (narrow-band) components of speech. The broadband residual is characterized by a small number of Walsh functions. An iterative algorithm, to determine the frequency and sequency components in a systematic manner, is derived. This is employed for speech coding at 16 kbit/s and 9.6 kbit/s. The hybrid transform method produces natural sounding speech which is indistinguishable from the original at 16 kbit/s and highly intelligible at 9.6 kbit/s.
AB - In this paper, a hybrid transform method for analysis/synthesis and coding of speech signals is proposed. A finite number of Fourier functions is used to represent frame-by-frame the selective (narrow-band) components of speech. The broadband residual is characterized by a small number of Walsh functions. An iterative algorithm, to determine the frequency and sequency components in a systematic manner, is derived. This is employed for speech coding at 16 kbit/s and 9.6 kbit/s. The hybrid transform method produces natural sounding speech which is indistinguishable from the original at 16 kbit/s and highly intelligible at 9.6 kbit/s.
KW - coding
KW - Fourier
KW - Speech
KW - transforms
KW - Walsh
UR - http://www.scopus.com/inward/record.url?scp=0026202612&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026202612&partnerID=8YFLogxK
U2 - 10.1016/0165-1684(91)90132-3
DO - 10.1016/0165-1684(91)90132-3
M3 - Article
AN - SCOPUS:0026202612
VL - 24
SP - 217
EP - 229
JO - Signal Processing
JF - Signal Processing
SN - 0165-1684
IS - 2
ER -