Excitation vector generator, speech coder and speech decoder
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKazutoshi YASUNAGA, Toshiyuki MORII, Hiroyuki EHARA
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Abstract
An excitation vector generator includes an input vector providing system that is capable of providing an input vector having at least one pulse, each pulse having a predetermined position and a respective polarity. A fixed waveform storage system is capable of storing at least one fixed waveform. An arranging system is capable of arranging the at least one fixed waveform in accordance with the position and the polarity of the at least one pulse.
Claims13
An excitation vector generator, comprising:
- an input vector providing system capable of providing an input vector having at least one pulse, each pulse having a predetermined position and a respective polarity;
- a fixed waveform storage system capable of storing at least one fixed waveform;
- and
- an arranging system capable of arranging said at least one fixed waveform in accordance with the position and the polarity of said at least one pulse.
A method for generating an excitation vector used in the production of synthesized speech, comprising:
- providing an input vector having a plurality of pulses, each pulse of said plurality of pulses having a predetermined position and a predetermined polarity;
- providing a plurality of fixed waveforms;
- arranging one fixed waveform of said plurality of fixed waveforms in accordance with a position and a polarity of the plurality of pulses of said input vector;
- and
- generating an excitation vector based on said arranged waveform.
An excitation vector generator, comprising:
- an input vector providing system capable of providing an input vector having at least one pulse, said at least one pulse having a predetermined position and a predetermined polarity;
- a fixed waveform storage system that stores at least one fixed waveform;
- and
- a shifting system that shifts said at least one fixed waveform in accordance with the predetermined position and the predetermined polarity of said at least one pulse of said input vector.
Dependencies are inferred from the claim text.