Gain control device, gain control method and audio equipment

• Main Authors: LU JIE, MA KEZHENG, KE YI, MA XIAN
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; CONTROL OF AMPLIFICATION; ELECTRICITY

The invention relates to a gain control device, a gain control method and audio equipment. The gain control device comprises a clock circuit, an AGC circuit and a gain control circuit, wherein the clock circuit is used for outputting a clock signal; the AGC circuit is connected with the clock circuit, the AGC circuit is configured with a plurality of gain step values and is used for determining a corresponding target gain step value and a target step time period according to a comparison result of a received output signal of the amplifier and a plurality of preset conditions, and the AGC circuit is connected with the clock circuit according to the clock signal and the target step time period. Adjusting a gain control signal by taking the target gain step value as a unit; the gain control circuit is respectively connected with the clock circuit and the AGC circuit and is used for acquiring a gain control signal according to the clock signal and controlling the gain of the amplifier based on an acquisition resu