Audio channel control circuit
AssigneeHon Hai Precision Industry Co., Ltd.
InventorChun-Te Wu
Life of this patent
Estimating the term…
Abstract
An audio channel control circuit includes a filter module and a determining module. The audio channel control circuit receives a first audio signal and a second audio signal from an audio device. The first audio signal loads a first carrier signal, while the second audio signal loads a second carrier signal. The first carrier signal and the second carrier signal have different phases. The filter module filters the first audio signal and the second audio signal, separating the first carrier signal from the first audio signal and the second carrier signal from the second audio signal. According to the phases of the first carrier signal and the second carrier signal, the determining module chooses a speaker of the left audio channel or a speaker of the right audio channel to output the first audio signal or the second audio signal.
Claims11
An audio channel control circuit for receiving a first audio signal and a second audio signal, wherein the first audio signal loads a first carrier signal, the second audio signal loads a second carrier signal, and the first carrier signal and the second carrier signal have different phases, the audio channel control circuit comprising:
- a filter circuit configured to filter the first audio signal and the second audio signal to separate the first carrier signal from the first audio signal and the second carrier signal from the second audio signal;
- and
- a determining circuit configured to determine whether the first audio signal belonging to a left audio channel and whether the second audio signal belonging to a right audio channel;
- generate a first enable signal and a second enable signal;
- and
- output the first audio signal and the second audio signal to speakers corresponding to the right audio channel and the left audio channel respectively, according to whether the first audio signal belonging to the left audio channel and whether the second audio signal belonging to the right audio channel,
- wherein when a high level voltage is an effective enable signal and the first enable signal is the high level voltage and the second enable signal is a low level voltage, the determining circuit is configured to output the first audio signal to a left channel speaker and output the second audio signal to a right channel speaker;
- and
- when the high level voltage is the effective enable signal and the first enable signal is the low level voltage and the second enable signal is the high level voltage, the determining circuit is configured to output the first audio signal to the right channel speaker and output the second audio signal to the left channel speaker.
Dependencies are inferred from the claim text.