METHODS OF FIXED CODEBOOK SEARCHING FOR AUDIO CODECS
Dossier Overview
Applicant
WhatsApp, LLC
Inventor
Jatin Kumar; Bikash K. Agarwalla; Sriram Srinivasan; King Wei Hor; Koen Bernard Vos; Nicholas Warren Lenz; Henrik Julius Åström; Soeren Skak Jensen
IPC Classification
CPC Classification
Methods and systems are described for encoding voice speech. A method may include receiving, by an audio encoder, an audio signal comprising a plurality of subframes; determining, for a first subframe of the plurality of subframes, a number of fixed codebook (FCB) pulses according to a rate distortion criteria; selecting, in the subframe, a first set of one or more FCB pulses across a time domain and according to the determined number of FCB pulses; and generating a FCB signal based on the selected first set of FCB pulses.
Original (Chinese)
Methods and systems are described for encoding voice speech. A method may include receiving, by an audio encoder, an audio signal comprising a plurality of subframes; determining, for a first subframe of the plurality of subframes, a number of fixed codebook (FCB) pulses according to a rate distortion criteria; selecting, in the subframe, a first set of one or more FCB pulses across a time domain and according to the determined number of FCB pulses; and generating a FCB signal based on the selected first set of FCB pulses.
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