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US 8,027,490 B2Granted
Audio control method and audio processing system
AssigneeCoretronic Corporation
InventorsWu-Hung Lin, Ta-Ching Lu
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AssigneeCoretronic Corporation
InventorsWu-Hung Lin, Ta-Ching Lu
Estimating the term…
An audio control method and audio processing system utilize an ADC to sample an analog audio input signal and convert it to a digital audio signal. A control module determines input signal level from the digital audio signal. Based on different input signal levels, output gain range of the amplifier can be set. In this way, the present invention can prevent speakers being burned out or volume being too low.
A method of controlling audio for an audio processing system having an amplifier, the method comprising steps of:
An audio processing system comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements: circuit…
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements: low-frequency amplifiers, e.g. audio preamplifiers
Gain control in amplifiers or frequency changers: digital control of analog signals
Automatic control: in amplifiers having semiconductor devices
About 3 years 9 months of term left · ends 26 Jul 2030 (estimated)
1. Field of the Invention
The present invention relates to audio control methods and audio processing systems, and more particularly, to an audio processing system with automatic gain adjustment based on an analog audio input signal.
2. Description of the Prior Art
FIG. 1 is a diagram of a conventional audio processing system.
FIG. 2 is a flowchart of an audio control method according to a preferred embodiment of the present invention.
FIG. 3 is a diagram of the audio control method of FIG. 2.
Please refer to FIG. 2, which is a flowchart of an audio control method according to a preferred embodiment of the present invention. The method is used in an audio control system, and comprises:
Step 100: setting a standard gain range of an amplifier;
Step 102: setting an audio output criterion;