Speech circuit of smart key

A smart key and voice technology, applied in the direction of electromagnetic and audible signals, can solve the problems of lack of personalization, smart keys without voice prompt function, monotony, etc.

Inactive Publication Date: 2015-02-25
重庆桦哲科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the current smart keys generally do not have the voice prompt function, which is relatively monotonous and does not have personalization.

Method used

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  • Speech circuit of smart key

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] First of all, before describing the embodiments, it is necessary to explain some terms appearing in this text. For example:

[0023] Herein, terms such as "first" and "second" may be used to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a "first" element could also be termed a "second" element without departing from the teachings of the prese...

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Abstract

The invention discloses a speech circuit of a smart key. The speech circuit comprises an audio decoding chip U12, an audio power amplifier chip U13 and voltage stabilizing chips U18 and U17. The audio decoding chip U12 comprises forty-eight pins, and the audio power amplifier chip U13 comprises eight pins. The speech circuit receives FLASH bit streams through a serial port of the audio decoding chip U12, inputted bit streams are decoded, a 18-bit oversampling multi-bit epsilon-delta DAC is reached through a digital volume controller to output decoded audio signals, the decoded audio signals are sent to the audio power amplifier chip U13 for audio power amplification, and the amplified signals are outputted by pins VO1 and VO2 of the audio power amplifier chip U13 to drive loudspeakers, so that speech output is realized.

Description

technical field [0001] The invention relates to a voice circuit of an intelligent key. [0002] Background technique [0003] With the gradual development of intelligent life, more and more smart keys are used by people, and their convenience and safety are more and more popular. However, present smart keys generally do not have a voice prompt function, which is relatively monotonous and does not have personalization. [0004] Contents of the invention [0005] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a voice circuit that can be used for smart keys. [0006] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a voice circuit of a smart key, including an audio decoding chip U12, an audio power amplifier chip U13, and voltage stabilizing chips U18 and U17; [0007] The audio decoding chip U12 includes forty-eight p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B3/10
CPCG08B3/10
Inventor 陈前锋李芳波
Owner 重庆桦哲科技有限公司
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