Audio restore circuit
AssigneeRealtek Semiconductor Corp.
InventorsChien-Hsun Lu, Yi-Han Peng
Life of this patent
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Abstract
An audio restore circuit includes an audio tracking circuit, a clock adjustment circuit, and an audio generator circuit. The audio tracking circuit is configured to generate a first control signal according to a sampling rate of an audio sampled signal and a clock rate of an audio clock signal. The clock adjustment circuit is configured to adjust the clock rate of the audio clock signal according to the first control signal. The audio generator circuit is configured to output a plurality of audio output signals according to the audio sampled signal and the audio clock signal.
Claims18
An audio restore circuit, comprising:
- an audio tracking circuit configured to generate a first control signal according to a sampling rate of an audio sampled signal and a clock rate of an audio clock signal;
- a clock adjustment circuit configured to adjust the clock rate of the audio clock signal according to the first control signal;
- and
- an audio generator circuit configured to output a plurality of audio output signals according to the audio sampled signal and the audio clock signal,
- wherein the audio tracking circuit is further configured to generate a first flag signal according to the sampling rate of the audio sampled signal and a first counting threshold value, generate a second flag signal according to the clock rate of the audio clock signal and a second counting threshold value, generate a second control signal according to the first flag signal and the second flag signal, and generate the first control signal according to the second control signal.
An audio restore circuit, comprising:
- an audio tracking circuit configured to generate an enable signal and one of a speed-up signal and a slow-down signal according to a data amount of an audio sampled signal, a data water level upper limit, and a data water level lower limit;
- a clock adjustment circuit configured to adjust a clock rate of an audio clock signal according to the enable signal and the one of the speed-up signal and the slow-down signal;
- and
- an audio generator circuit configured to output a plurality of audio output signals according to the audio sampled signal and the audio clock signal, wherein the audio generator circuit comprises:
- a storage circuit configured to receive and store the audio sampled signal.
Dependencies are inferred from the claim text.