Signal transmission system in which level numbers representing q

Details Signal transmission system in which level numbers representing q Signal transmission system in which level numbers representing q

1997-03-13

1999-08-24

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

G10L 914

Patent

active

059436468

ABSTRACT:
In a transmission system a signal is encoded in an encoder (7) and the encoded signal is transmitted by a transmitter (2) via a transmission medium (4) to a receiver (6). In the encoder, analysis parameters of the input signal are determined by an analyzer (8) and quantized by a quantizer (14). The transmitter transmits quantization level numbers to the receiver (6), and in the receiver decoded analysis parameters are derived by interpolating level numbers of two subsequent sets of analysis parameters, and subsequently determining the corresponding analysis. By interpolating the level numbers instead of the analysis parameters themselves, a substantial amount of computational complexity is saved.

REFERENCES:
patent: 4528551 (1985-07-01), Agrawal et al.
patent: 4815134 (1989-03-01), Picone et al.
patent: 4975960 (1990-12-01), Petajan
patent: 5012518 (1991-04-01), Liu et al.
patent: 5845276 (1998-12-01), Emerson et al.
GSM Recommendation 06.10, European Telecommunication Standardisation Institute (ETSI) Jan. 1992.
"Speech Communication", Douglas O'Shaughnessy, CPT. 8, pp. 336-378, Addison-Wesley Publishing, 1990.

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