CN201667709U - Audio digital signal processing device with wireless carrier signal receiving and processing function - Google Patents

Abstract

The utility model discloses an audio digital signal processing device with the wireless carrier signal receiving and processing function, which comprises a radio receiving module, an MP3 decoding module and a speaker, wherein the radio receiving module comprises an integrated circuit chip CD1691M, a receiving antenna and coaxial two-gang variable capacitors; the MP3 decoding module comprises an MP3 decoding chip AX2008, a TF card slot and an MP3 playing and operating key; one audio signal of an audio signal demodulated by the integrated circuit chip CD1691M and an audio signal decoded by the MP3 decoding chip AX2008 is selected by a transfer switch, the selected audio signal is adjusted by a potentiometer, the audio signal adjusted by the potentiometer is input to the integrated circuit chip CD1691M for amplifying, and finally the amplified audio signal drives the speaker to product sound. The utility model has the radio receiving and MP3 playing functions and has the advantages of simple structure and convenient operation.

Description

A kind of audio digital signals processing unit with wireless carrier signal reception processing

Technical field

The utility model relates to a kind of audio digital signals processing unit, particularly has wireless carrier signal and receives the audio digital signals processing unit of handling.

Background technology

Because development of technology, the development of semiconductor memory is developed the MP3 player fast.MP3 is big with its volume low capacity, the advantage of tonequality grace has attracted large quantities of young men, but common MP3 does not substantially have function of radio receiver at present, make some customs listen the friend in radio station to feel very inconvenient, perhaps, some high-end MP3 can be provided with function of radio receiver, but often operate comparatively complexity and price is all than higher, also do not have a kind of simple in structurely so far, and easy to operate have wireless carrier signal again and receive the device that the audio digital signals handled is handled.

Summary of the invention

The purpose of this utility model is in order to address the deficiencies of the prior art, to provide a kind of simple in structure, easy to operate wireless carrier signal that has to receive the audio digital signals processing unit of handling.

The technical solution of the utility model is as follows:

A kind of audio digital signals processing unit with wireless carrier signal reception processing, comprise the radio reception module, the MP3 decoding module, battery and loud speaker, it is characterized in that: described radio reception module comprises integrated circuit (IC) chip CD1691M, reception antenna and coaxial two-gang variable capacitor, described MP3 decoding module comprises MP3 decoding chip AX2008, TF card deck and MP3 play operation button, this audio signal processor with wireless carrier signal reception processing also comprises a duplex diverter switch, first pin of duplex diverter switch is connected with the 23 pin of integrated circuit (IC) chip CD1691M by an electric capacity, second pin of duplex diverter switch is connected with the 24 pin of integrated circuit (IC) chip CD1691M with an electric capacity by the potentiometer of a charged source switch respectively, the 3rd pin of duplex diverter switch is connected with the 41 pin of MP3 decoding chip AX2008 by an electric capacity, the 5th pin of duplex diverter switch is connected with the 26 pin of integrated circuit (IC) chip CD1691M, the 6th pin of duplex diverter switch is connected with battery by the mains switch of described charged source switch potentiometer, the 7th pin of duplex diverter switch is connected with the 40 pin of MP3 decoding chip AX2008, and an end ground connection other end of loud speaker is connected with the 27 pin of integrated circuit (IC) chip CD1691M by an electric capacity.

The utility model has the advantages that: simple in structure, except having the MP3 player function, also have function of radio receiver on the function, both are by the diverter switch switch operating, and are simple to operation; The utility model also is provided with TF card deck, and the user can change memory capacity by change TF card as required, avoids will changing because of off-capacity the problem of whole M P3 player.

Description of drawings

Fig. 1 is the utility model circuit theory schematic diagram;

Fig. 2 is the principle schematic of the utility model integrated circuit (IC) chip CD1691M.

Embodiment

As shown in Figure 1, the utility model comprises radio reception module, MP3 decoding module, battery and loud speaker, the radio reception module comprises integrated circuit (IC) chip CD1691M, reception antenna and coaxial two-gang variable capacitor, and the MP3 decoding module comprises MP3 decoding chip AX2008, TF card deck and MP3 play operation button.The utility model also comprises a duplex diverter switch, first pin of duplex diverter switch is connected with the 23 pin of integrated circuit (IC) chip CD1691M by an electric capacity, second pin of duplex diverter switch is connected with the 24 pin of integrated circuit (IC) chip CD1691M with an electric capacity by the potentiometer of a charged source switch respectively, the 3rd pin of duplex diverter switch is connected with the 41 pin of MP3 decoding chip AX2008 by an electric capacity, the 5th pin of duplex diverter switch is connected with the 26 pin of integrated circuit (IC) chip CD1691M, the 6th pin of duplex diverter switch is connected with battery by the mains switch of described charged source switch potentiometer, the 7th pin of duplex diverter switch is connected with the 40 pin of MP3 decoding chip AX2008, and an end ground connection other end of loud speaker is connected with the 27 pin of integrated circuit (IC) chip CD1691M by an electric capacity.

Select when the sliding piece of duplex diverter switch pushes between first pin and second pin, the 5th pin and the 6th pin to connect the radio reception module, select to connect the MP3 decoding module when sliding piece of duplex diverter switch pushes between second pin and the 3rd pin, the 6th pin and the 7th pin.

Integrated circuit (IC) chip CD1691M is reduced into audio signal to the high-frequency signal demodulation that receives from reception antenna, MP3 decoding chip AX2008 becomes audio signal after the mp3 file of TF card is decoded, select one of them audio signal through the audio signal after the integrated circuit (IC) chip CD1691M demodulation with by MP3 decoding chip AX2008 decoded audio signal by the duplex diverter switch, the selected audio signal that goes out is regulated through the potentiometer of charged source switch earlier, be input to integrated circuit (IC) chip CD1691M by the audio signal of the potentiometer of charged source switch adjusting and carry out processing and amplifying, after the audio-signal-driven loud speaker sounding of processing and amplifying.

MP3 plays button and comprises broadcast/pause button, last one bent button and next bent button, and is simple to operate direct.The utility model also is provided with earphone jack, is convenient for people to select to listen to loud speaker or with earplug the music of oneself liking according to different environment.

The utility model uses very simple, earlier the potentiometer of charged source switch is screwed into open mode during use, select function of radio receiver or MP3 playing function by the duplex diverter switch, when selecting function of radio receiver, only need diverter switch is pushed function of radio receiver one side, rotate coaxial two-gang variable capacitor and can select oneself to like the radio station of listening, the potentiometer of rotating band mains switch can be adjusted volume; When selecting the MP3 playing function, only need diverter switch is pushed MP3 playing function one side, just can easily realize, play the song that button can be controlled and select to play by broadcast/pause button, last one bent button and three MP3 of next bent button, the potentiometer of accommodation zone mains switch can be controlled volume simultaneously.

Claims (1)

1. one kind has the audio digital signals processing unit that wireless carrier signal receives processing, comprise the radio reception module, the MP3 decoding module, battery and loud speaker, it is characterized in that: described radio reception module comprises integrated circuit (IC) chip CD1691M, reception antenna and coaxial two-gang variable capacitor, described MP3 decoding module comprises MP3 decoding chip AX2008, TF card deck and MP3 play operation button, this audio digital signals processing unit with wireless carrier signal reception processing also comprises a duplex diverter switch, first pin of duplex diverter switch is connected with the 23 pin of integrated circuit (IC) chip CD1691M by an electric capacity, second pin of duplex diverter switch is connected with the 24 pin of integrated circuit (IC) chip CD1691M with an electric capacity by the potentiometer of a charged source switch respectively, the 3rd pin of duplex diverter switch is connected with the 41 pin of MP3 decoding chip AX2008 by an electric capacity, the 5th pin of duplex diverter switch is connected with the 26 pin of integrated circuit (IC) chip CD1691M, the 6th pin of duplex diverter switch is connected with battery by the mains switch of described charged source switch potentiometer, the 7th pin of duplex diverter switch is connected with the 40 pin of MP3 decoding chip AX2008, and an end ground connection other end of loud speaker is connected with the 27 pin of integrated circuit (IC) chip CD1691M by an electric capacity.

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