Method and apparatus of mixing audios
First Claim
1. A method of mixing audios to transmit a plurality of input voices, said method comprising the steps of:
- decoding a portion of each of said input voices to acquire a plurality of audio parameters responsive to said input voices to reduce a transmission delay of said input voices, wherein each of said input voices is compactly encoded and includes a plurality of audio frames;
performing an audio decision and classification on said audio parameters responsive to said input voices to determine an audio type of each of said input voices;
selecting a target frame from said audio frames of said input voices according to a signal intensity of said audio frames; and
packaging said target frame to generate a plurality of output voices having an audio format identical to said input voices to convey readily said output voices.
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Abstract
A method and system of mixing audios to convert a plurality of input voices into a single output voice is described. The system of mixing audios has a decoding device, an audio mixing device and a frame package unit. The input voices including a plurality of audio frames are partially decoded to acquire audio parameters of the input voices by the decoding device. One audio frame of the input voices is selected by the audio mixing device to obtain a target frame according to the audio parameters later. The target frame is then packaged so as to be identical to the original format of the input voices by the frame package unit.
20 Citations
35 Claims
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1. A method of mixing audios to transmit a plurality of input voices, said method comprising the steps of:
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decoding a portion of each of said input voices to acquire a plurality of audio parameters responsive to said input voices to reduce a transmission delay of said input voices, wherein each of said input voices is compactly encoded and includes a plurality of audio frames;
performing an audio decision and classification on said audio parameters responsive to said input voices to determine an audio type of each of said input voices;
selecting a target frame from said audio frames of said input voices according to a signal intensity of said audio frames; and
packaging said target frame to generate a plurality of output voices having an audio format identical to said input voices to convey readily said output voices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of mixing audios to transmit a plurality of input voices, said method comprising the steps of:
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decoding a portion of each of said input voices to acquire a plurality of audio parameters responsive to said input voices to reduce a transmission delay of said input voices, wherein each of said input voices compactly encoded includes a plurality of audio frames;
performing an audio decision and classification on said audio parameters responsive to said input voices to determine an audio type of each of said input voices, wherein the step of performing said audio decision and classification further comprises the steps of;
verifying a header of said audio frames to determine a plurality of classes of said audio frames; and
identifying said audio parameters responsive to said input voices to determine said audio type of each of said input voices;
selecting a target frame from said audio frames of said input voices according to a signal intensity of said audio frames; and
packaging said target frame to generate a plurality of output voices having an identical audio format to said input voices to convey readily said output voices. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for mixing audios to transmit a plurality of input voices, said apparatus comprising:
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a decoding device for decoding a portion of each of said input voices to acquire a plurality of audio parameters responsive to said input voices to reduce a transmission delay, wherein each of said input voices compactly encoded includes a plurality of audio frames;
an audio mixing device coupled to said decoding device for selecting one of said audio frames on the basis of said audio parameters of said input voices, wherein said audio mixing device further comprises;
a header verification unit coupled to said decoding device for checking a title of said audio frames to determine a plurality of classes of said audio frames;
an audio identification unit coupled to said header verification unit for determining an audio type of each of said input voices by a pitch difference absolute value of said audio frames and a pitch gain of said audio parameters;
an excitation computation unit coupled to said audio identification unit for computing a signal intensity of an excitation signal to determine said signal intensity of said audio frames;
an adaptive selecting unit coupled to said header verification unit for selecting a target frame from said audio frames; and
a voice selector coupled to said header verification unit to select a voice data stream; and
a frame package unit coupled to said excitation computation unit, said adaptive selecting unit and said voice selector, respectively, to package said target frame for generating a plurality of output voices having a format identical to said input voices to convey readily said output voices. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification