Bluetooth-supporting voice part output control circuit with preceding-stage amplification function

Abstract

The invention provides a Bluetooth-supporting voice part output control circuit with a preceding-stage amplification function. The control circuit comprises a power supply circuit, a Bluetooth drive circuit and a power output circuit with a preceding-stage operational amplifier, the power output circuit with the preceding-stage operational amplifier comprises a preceding-stage operational amplifier power output circuit, a first-class power output circuit and a second-class power output circuit; the power supply circuit is electrically connected with the Bluetooth drive circuit, the preceding-stage operational amplifier power output circuit, the first-class power output circuit and the second-class power output circuit respectively; the Bluetooth drive circuit is electrically connected with the preceding-stage operational amplifier power output circuit, the first-class power output circuit and the second-class power output circuit respectively; the preceding-stage operational amplifier power output circuit is electrically connected with the first-class power output circuit and the second-class power output circuit respectively; the first type power output circuit is electrically connected with a first external player; and the second type power output circuit is electrically connected with a second external player. According to the invention, the problem of dry sound effect output can be solved.

Description

technical field [0001] The invention belongs to the field of audio technology, and in particular relates to a sound element output control circuit supporting bluetooth and equipped with pre-amplification. Background technique [0002] Most of the electronic products currently on the market have audio functions. After intense work, people often listen to music to relieve stress, or use electronic products with audio functions during entertainment and work. At this time, higher requirements are placed on the sound quality of electronic products, and the factor that directly affects the sound quality of electronic products is the performance of the audio control circuit of electronic products. The output power of the existing audio control circuit is relatively low, so that the electronic product has the problem of dry sound output. Contents of the invention [0003] The embodiment of the present invention provides a sound unit output control circuit supporting Bluetooth an...

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a sound element output control circuit that supports Bluetooth and has pre-amplification, aiming to solve the problem of dry sound output caused by relatively low output power in the prior art

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