METHOD AND DEVICE FOR CODING THE ENERGY OF VOICE SIGNALS IN VERY LOW RATE VOCODERS

摘要

you must notmethod and device for encoding energyvoice signal in vocodeurs at very low flow ratesthe analysis of the voice signals is carried outin windows, to quantify a number of consecutivethe voice signal is determined (in each of the levels.windows and windows in each measured valuethe average effective samples of the speech signal. it isto build, in an n - dimensional vector spacewith the first base unit vectors (e0 to - 1)the measured energies of n consecutive windows in a vehiclethe energy e from the sum of n vectors correspondnntenergy is measured respectively in n windows analysisvoice signal and to operate in that espnce changewith the first main core axis direction vectorwith the unitary unit vectors of the componentsthe first project in the new baselinevehicle energy. coding bits such as qq = m, the component of the resulting vector projected on the axis.principal of the new basis and on a reduced number of bitsless than q, of the components of the proposed vehicle energythe n - 1 other axes of the vector space defined inthe new database is then made a realization of a.device for n = 3 is described.applications: vocodeurs for transmissionsdigital, at low flow rates.figure 2.