Audio decoding apparatus
First Claim
1. An audio decoding apparatus which decodes compressed audio streams and outputs audio signals, said audio decoding apparatus comprising:
- n audio decoders each operable to decode one of inputted n compressed audio streams and to output audio data, n being not less than two;
n buffer memories each operable to temporarily hold the audio data outputted from one of said audio decoders;
n audio output units each operable to convert one of the audio data into an audio signal and to output the audio signal; and
an output control unit operable to read the audio data from said buffer memories and to transmit the audio data to corresponding audio output units, wherein the output control unit is operable to repeat the reading of the audio data from the n buffer memories and the transmission of the audio data to said corresponding audio output units in the same number of samples or in the number of samples for the same amount of transmission time.
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Accused Products
Abstract
The present invention provides an audio decoding apparatus which can decode and reproduce a plurality of compressed audio streams simultaneously without sound interruption, even when the number of samples per frame is different. The audio decoding apparatus includes: a first and second audio decoder which decode two inputted compressed audio streams, and output audio data; a first and second intermediate buffer which temporarily hold the outputted audio data; a first and second audio output unit which convert the audio data into audio signals and output such audio signals; an output control unit which reads the audio data from the first and second intermediate buffer, and transmits the audio data to the first and second audio output unit. The output control unit repeats the reading and transmission of either the same number of samples of audio data or the number of samples of audio data for the same amount of transmission time, from the first and second intermediate buffer to the first and second output unit.
22 Citations
8 Claims
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1. An audio decoding apparatus which decodes compressed audio streams and outputs audio signals, said audio decoding apparatus comprising:
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n audio decoders each operable to decode one of inputted n compressed audio streams and to output audio data, n being not less than two;
n buffer memories each operable to temporarily hold the audio data outputted from one of said audio decoders;
n audio output units each operable to convert one of the audio data into an audio signal and to output the audio signal; and
an output control unit operable to read the audio data from said buffer memories and to transmit the audio data to corresponding audio output units, wherein the output control unit is operable to repeat the reading of the audio data from the n buffer memories and the transmission of the audio data to said corresponding audio output units in the same number of samples or in the number of samples for the same amount of transmission time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An audio decoding method for use in an apparatus which decodes compressed audio streams and outputs audio signals,
wherein the audio decoding apparatus includes: -
n audio decoders each operable to decode one of inputted n compressed audio streams and to output audio data, n being not less than two;
n buffer memories each operable to temporarily hold the audio data outputted from one of the audio decoders;
n audio output units each operable to convert one of the audio data into an audio signal and to output the audio signal, and said audio decoding method comprises reading the audio data from the buffer memories and transmitting the audio data to corresponding audio output units, wherein in said reading and transmitting, reading of the audio data from the buffer memories, in the same number of samples or in the number of samples for the same amount of transmission time, and transmitting the audio data to said corresponding audio output units, is repeated.
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8. A program for an apparatus which decodes compressed audio streams and outputs audio signals,
wherein the audio decoding apparatus includes: -
n audio decoders each operable to decode one of inputted n compressed audio streams and to output audio data, n being not less than two;
n buffer memories each operable to temporarily hold the audio data outputted from one of the audio decoders;
n audio output units each operable to convert one of the audio data into an audio signal and to output the audio signal, and said program causing a computer to execute reading the audio data from the buffer memories and transmitting the audio data to corresponding audio output units, wherein in said reading and transmitting, reading of the audio data from the buffer memories, in the same number of samples or in the number of samples for the same amount of transmission time, and transmitting the audio data to said corresponding audio output units, is repeated.
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Specification