Adaptive differential pulse code modulation/demodulation system and method
AssigneeMStar Semiconductor, Inc.
InventorChu-Feng Lien
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Abstract
An adaptive differential pulse-code modulation-demodulation system and method thereof is provided. The method includes steps of modulating an analog audio input signal into a data packet, including a plurality of digital data through adaptive differential pulse-code modulation, an initial value and a scale factor associated with the digital data, to be sent to the communication network, and demodulating the data packet according to the digital data, the initial value and the scale factor, thereby reconstructing the data packet to an analog audio output signal.
Claims13
An adaptive differential pulse-code modulation-demodulation (ADPCM) system, comprising:
- a modulation module, coupled to a communication network, for modulating an analog audio input signal into a data packet to be transmitted to the communication network, wherein the data packet comprises a plurality of ADPCM digital data, and an initial value and a scale factor associated with the ADPCM digital data;
- and
- a demodulation module, coupled to the communication network, for receiving the data packet and demodulating the ADPCM digital data of the data packet according to the initial value and the scale factor to reconstruct an analog audio output signal.
An adaptive differential pulse-code modulation-demodulation (ADPCM) method, comprising steps of:
- modulating an analog audio input signal into a data packet comprising a plurality of ADPCM digital data, an initial value and a scale factor;
- transmitting the data packet to a communication network;
- and
- demodulating the data packet coming from the communication network and reconstructing an analog audio output signal according to the ADPCM digital data, the initial value and the scale factor of the data packet.
Dependencies are inferred from the claim text.