Audio signal processing apparatus and audio signal processing method
First Claim
1. An audio signal processing apparatus, comprising:
- a plurality of individual audio interfaces;
an audio signal processing unit, for determining a total number of audio channels corresponding to the individual audio interfaces and generating a first output audio signal with a first number of audio channels according to an input audio signal and the total number of audio channels when the audio signal processing apparatus is operated under a first operational mode; and
an audio channel splitting unit, coupled to the audio signal processing unit and the audio interfaces, wherein when the audio signal processing apparatus is operated under the first operational mode, the audio channel splitting unit splits the first output audio signal with the first number of audio channels to the audio interfaces, respectively,wherein the audio signal processing unit comprises;
a processing module, coupled to the audio channel splitting unit, for generating the first output audio signal by processing the input audio signal according to a first control signal when the audio signal processing apparatus is operated under the first operational mode,wherein the processing module comprises;
a decoding unit, for decoding the input audio signal to generate a second output audio signal with a second number of audio channels; and
a specific downmixing unit, coupled to the decoding unit, for downmixing the second output audio signal to generate the first output audio signal according to the first control signal when the audio signal processing apparatus is operated under the first operational mode, wherein the first number of audio channels is different from the second number of audio channels.
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Abstract
An audio signal processing apparatus and an audio signal processing method are provide. The audio signal processing apparatus comprises: a plurality of individual audio interfaces, an audio signal processing unit, and an audio channel splitting unit. The audio signal processing unit is utilized for determining a total number of audio channels corresponding to the individual audio interfaces and generating a first output audio signal with a first number of audio channels according to an input audio signal and the total number of audio channels when the audio signal processing apparatus is operated under a first operational mode. The audio channel splitting unit is coupled to the audio signal processing unit and the audio interfaces. When the audio signal processing apparatus is operated under the first operational mode, the audio channel splitting unit splits the first output audio signal with the first number of audio channels to the audio interfaces, respectively.
235 Citations
12 Claims
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1. An audio signal processing apparatus, comprising:
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a plurality of individual audio interfaces; an audio signal processing unit, for determining a total number of audio channels corresponding to the individual audio interfaces and generating a first output audio signal with a first number of audio channels according to an input audio signal and the total number of audio channels when the audio signal processing apparatus is operated under a first operational mode; and an audio channel splitting unit, coupled to the audio signal processing unit and the audio interfaces, wherein when the audio signal processing apparatus is operated under the first operational mode, the audio channel splitting unit splits the first output audio signal with the first number of audio channels to the audio interfaces, respectively, wherein the audio signal processing unit comprises; a processing module, coupled to the audio channel splitting unit, for generating the first output audio signal by processing the input audio signal according to a first control signal when the audio signal processing apparatus is operated under the first operational mode, wherein the processing module comprises; a decoding unit, for decoding the input audio signal to generate a second output audio signal with a second number of audio channels; and a specific downmixing unit, coupled to the decoding unit, for downmixing the second output audio signal to generate the first output audio signal according to the first control signal when the audio signal processing apparatus is operated under the first operational mode, wherein the first number of audio channels is different from the second number of audio channels. - View Dependent Claims (2, 3, 4, 5)
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6. An audio signal processing apparatus, comprising:
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a plurality of individual audio interfaces; an audio signal processing unit, for determining a total number of audio channels corresponding to the individual audio interfaces and generating a first output audio signal with a first number of audio channels according to an input audio signal and the total number of audio channels when the audio signal processing apparatus is operated under a first operational mode; and an audio channel splitting unit, coupled to the audio signal processing unit and the audio interfaces, wherein when the audio signal processing apparatus is operated under the first operational mode, the audio channel splitting unit splits the first output audio signal with the first number of audio channels to the audio interfaces, respectively, wherein one of the audio interfaces is a SPDIF interface, a coaxial interface, an HDMI interface, or an analog interface.
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7. An audio signal processing method, comprising:
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when an operational mode is a first operational mode; determining a total number of audio channels corresponding to a plurality of individual audio interfaces; generating a first output audio signal with a first number of audio channels according to an input audio signal and the total number of audio channels; and splitting the first output audio signal with the first number of audio channels to the audio interfaces, respectively, wherein the step of generating the first output audio signal with the first number of audio channels comprises; generating a first control signal according to the total number of audio channels; and generating the first output audio signal by processing the input audio signal according to the first control signal, wherein the step of generating the first output audio signal by processing the input audio signal according to the first control signal comprises; decoding the input audio signal to generate a second output audio signal with a second number of audio channels; and downmixing the second output audio signal to generate the first output audio signal according to the first control signal, wherein the first number of audio channels is different from the second number of audio channels. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification