1995-12-20
1998-03-10
MacDonald, Allen R.
G10L 300
Patent
active
057271232
ABSTRACT:
A method and apparatus for implementing a vocoder in a application specific integrated circuit (ASIC) is provided. The apparatus contains a DSP core that performs computations in accordance with a reduced instruction set (RISC) architecture. The circuit further includes a specifically designed slave processor to the DSP core referred to as the minimization processor. The apparatus further comprises a specifically designed block normalization circuitry.
REFERENCES:
patent: 4789956 (1988-12-01), Hiderbrandt
patent: 5414796 (1995-05-01), Jacobs et al.
patent: 5491773 (1996-02-01), Veldhius et al.
IEEE International Conference on Communication, ICC 90; Chung et al, "Gain Normalization in a 4200 BPS Homomorphic Vocoder", pp. 942-946, vol. 3, Apr. 1990.
Chang Chienchung
Kantak Prashant
McDonough John G.
Sakamaki Charles E.
Singh Randeep
Dorvil Richemond
English Sean
MacDonald Allen R.
Miller Russell B.
Qualcomm Incorporated
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