Abstract
This paper proposes a new speech coding method called PSI-CELP (Pitch Synchronous Innovation CELP). This method is based on CELP, but adds pitch synchronous innovation, which means that even random codevectors are adaptively converted to have pitch periodicity for voiced frames. In addition, this paper also proposes four other methods: (a) a fixed codebook that is prepared as part of the adaptive codebook for nonperiodic frames, (b) a random codebook which consists of two conjugate sub-codebooks, (c) an MA-type perceptual weighting filter using unquantized LPC parameters, and (d) codebook searches using delayed decision. PSI-CELP improves the SNR, segmental SNR, and opinion equivalent Q value of the coding system by 1.6 dB, 1.0 dB, and 0.5 dB respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 53-60 |
| Number of pages | 8 |
| Journal | NTT Review |
| Volume | 6 |
| Issue number | 6 |
| Publication status | Published - 1994 Nov |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering
Cite this
Basic algorithm of pitch synchronous innovation CELP (PSI-CELP) speech coding. / Miki, Satoshi; Moriya, Takehiro; Mano, Kazunori; Ohmuro, Hitoshi.
In: NTT Review, Vol. 6, No. 6, 11.1994, p. 53-60.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Basic algorithm of pitch synchronous innovation CELP (PSI-CELP) speech coding
AU - Miki, Satoshi
AU - Moriya, Takehiro
AU - Mano, Kazunori
AU - Ohmuro, Hitoshi
PY - 1994/11
Y1 - 1994/11
N2 - This paper proposes a new speech coding method called PSI-CELP (Pitch Synchronous Innovation CELP). This method is based on CELP, but adds pitch synchronous innovation, which means that even random codevectors are adaptively converted to have pitch periodicity for voiced frames. In addition, this paper also proposes four other methods: (a) a fixed codebook that is prepared as part of the adaptive codebook for nonperiodic frames, (b) a random codebook which consists of two conjugate sub-codebooks, (c) an MA-type perceptual weighting filter using unquantized LPC parameters, and (d) codebook searches using delayed decision. PSI-CELP improves the SNR, segmental SNR, and opinion equivalent Q value of the coding system by 1.6 dB, 1.0 dB, and 0.5 dB respectively.
AB - This paper proposes a new speech coding method called PSI-CELP (Pitch Synchronous Innovation CELP). This method is based on CELP, but adds pitch synchronous innovation, which means that even random codevectors are adaptively converted to have pitch periodicity for voiced frames. In addition, this paper also proposes four other methods: (a) a fixed codebook that is prepared as part of the adaptive codebook for nonperiodic frames, (b) a random codebook which consists of two conjugate sub-codebooks, (c) an MA-type perceptual weighting filter using unquantized LPC parameters, and (d) codebook searches using delayed decision. PSI-CELP improves the SNR, segmental SNR, and opinion equivalent Q value of the coding system by 1.6 dB, 1.0 dB, and 0.5 dB respectively.
UR - http://www.scopus.com/inward/record.url?scp=0028539702&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028539702&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0028539702
VL - 6
SP - 53
EP - 60
JO - NTT Review
JF - NTT Review
SN - 0915-2334
IS - 6
ER -