CN104202708A - Power amplifier audio device with microphone and method thereof - Google Patents
Power amplifier audio device with microphone and method thereof Download PDFInfo
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- CN104202708A CN104202708A CN201410478505.9A CN201410478505A CN104202708A CN 104202708 A CN104202708 A CN 104202708A CN 201410478505 A CN201410478505 A CN 201410478505A CN 104202708 A CN104202708 A CN 104202708A
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Abstract
A power amplifier audio device comprises a CSR8635 Bluetooth chip. A pin RF marked as 12 of the CSR8635 Bluetooth chip is connected with a Bluetooth antenna device. The CSR8635 Bluetooth chip can be connected with a terminal having a Bluetooth module through the Bluetooth antenna device. An analog signal pin, marked as 67 and used for connection with a cathode of the microphone, of the CSR8635 Bluetooth chip is connected with the cathode of the microphone. An analog signal pin, marked as 68 and used for connection with the cathode of the microphone, of the CSR8635 Bluetooth chip is connected with an anode of the microphone. By the use of the power amplifier audio device with a method thereof, the defects that the existing audio equipment is poor in universality and compatibility and has no microphone signal transmission function are avoided.
Description
Technical field
The invention belongs to audio frequency apparatus technical field, be specifically related to a kind of power amplifier audio frequency apparatus and method thereof with microphone.
Background technology
Existing power amplifier audio frequency apparatus is all the power amplifier impact that belongs to simple function substantially, such as can only play separately mp3 upper with audio file, play the audio stream sending with the terminal as notebook computer or mobile phone of wireless blue tooth module separately, such mode is very poor for versatility and the compatibility of audio frequency apparatus, and does not also have the signal transfer functions of microphone.
Summary of the invention
Object of the present invention provides a kind of power amplifier audio frequency apparatus with microphone, comprise CSR8635 Bluetooth chip, the RF pin being designated of described CSR8635 Bluetooth chip is connected with Bluetooth antenna device, described CSR8635 Bluetooth chip can be connected with the terminal with bluetooth module by Bluetooth antenna device, described Bluetooth antenna device comprises Bluetooth antenna, described Bluetooth antenna, one utmost point of the first electric capacity, one utmost point of the first inductance and a utmost point of the second inductance are connected, another utmost point of the second inductance, one utmost point of the second electric capacity and the input of band pass filter are connected, the earth terminal of band pass filter, another utmost point of the first electric capacity, another of another utmost point of the second electric capacity and the first inductance be ground connection extremely all, the output of band pass filter is connected with 12 the RF pin of being designated of CSR8635 Bluetooth chip, the analog signal output pin of the R channel negative pole for loud speaker being designated of CSR8635 Bluetooth chip is connected with 12 the GPIO pin of being designated of AC1096 decoding chip, the analog signal output pin that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip is connected with 13 the GPIO pin of being designated of AC1096 decoding chip, the analog signal output pin that is designated 9 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip is connected with 10 the GPIO pin of being designated of AC1096 decoding chip, the analog signal output pin that is designated 10 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip is connected with 11 the GPIO pin of being designated of AC1096 decoding chip, the MOSI interface of SPI is connected with 30 the PIO pin of being designated of CSR8635 Bluetooth chip, the MISO interface of SPI is connected with 28 the PIO pin of being designated of CSR8635 Bluetooth chip, the CS interface of SPI is connected with 24 the PIO pin of being designated of CSR8635 Bluetooth chip, the CLK interface of SPI is connected with 34 the PIO pin of being designated of CSR8635 Bluetooth chip, described SPI turns spi bus interface chip with usb bus and is connected, described usb bus turns spi bus interface chip and can be connected with the USB interface of MP3,4 the L channel digital-to-analogue inverted signal pin of being designated of described AC1096 decoding chip is designated being connected of 7 left-channel signal input pin with mix3018 audio-frequency power amplifier, 5 the R channel digital-to-analogue inverted signal pin of being designated of described AC1096 decoding chip is designated being connected of 10 right channel signal input pin with mix3018 audio-frequency power amplifier, 1 the left passage positive output end of being designated of described AC1096 decoding chip is connected with the L channel positive pole of loud speaker, 1 the left passage positive output end of being designated of described AC1096 decoding chip is connected with the L channel positive pole of loud speaker, 3 the left passage negative output terminal of being designated of described AC1096 decoding chip is connected with the L channel negative pole of loud speaker, 16 the right passage positive output end of being designated of described AC1096 decoding chip is connected with the R channel positive pole of loud speaker, 14 the right passage negative output terminal of being designated of described AC1096 decoding chip is connected with the R channel negative pole of loud speaker, and associated methods to have avoided the existing versatility for audio frequency apparatus and compatibility be very poor and also do not have the defect of the signal transfer functions of microphone.
In order to overcome deficiency of the prior art, the invention provides a kind of power amplifier audio frequency apparatus with microphone and the solution of method thereof, specific as follows:
A kind of power amplifier audio frequency apparatus with microphone, comprise CSR8635 Bluetooth chip 1,12 the RF pin two of being designated of described CSR8635 Bluetooth chip 1 is connected with Bluetooth antenna device, described CSR8635 Bluetooth chip 1 can be connected with the terminal with bluetooth module by Bluetooth antenna device, described Bluetooth antenna device comprises Bluetooth antenna 3, described Bluetooth antenna 3, one utmost point of the first electric capacity 4, one utmost point of one utmost point of the first inductance 5 and the second inductance 6 is connected, another utmost point of the second inductance 6, one utmost point of the second electric capacity 7 and the input of band pass filter 8 are connected, the earth terminal of band pass filter 8, another utmost point of the first electric capacity 4, another of another utmost point of the second electric capacity 7 and the first inductance 5 be ground connection extremely all, the output of band pass filter 8 is connected with 12 the RF pin two of being designated of CSR8635 Bluetooth chip 1, the analog signal output pin 10 that is designated 6 the R channel negative pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 12 the GPIO pin 11 of being designated of AC1096 decoding chip 9, the analog signal output pin 12 that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 13 the GPIO pin 13 of being designated of AC1096 decoding chip 9, the analog signal output pin 14 that is designated 9 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 10 the GPIO pin 15 of being designated of AC1096 decoding chip 9, the analog signal output pin 16 that is designated 10 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 11 the GPIO pin 17 of being designated of AC1096 decoding chip 9, the MOSI interface 19 of SPI18 is connected with 30 the PIO pin 20 of being designated of CSR8635 Bluetooth chip 1, the MISO interface 22 of SPI21 is connected with 28 the PIO pin 23 of being designated of CSR8635 Bluetooth chip 1, the CS interface 24 of SPI21 is connected with 24 the PIO pin 25 of being designated of CSR8635 Bluetooth chip 1, the CLK interface 26 of SPI21 is connected with 34 the PIO pin 27 of being designated of CSR8635 Bluetooth chip 1, described SPI21 turns spi bus interface chip 28 with usb bus and is connected, 24 the USBDM pin 61 of being designated of described AC1096 decoding chip is connected with the data wire negative pole 62 of the USB interface of MP3,25 the USBDM pin 63 of being designated of described AC1096 decoding chip is connected with the data wire positive pole 64 of the USB interface of MP3,4 the L channel digital-to-analogue inverted signal pin 29 of being designated of described AC1096 decoding chip 9 is designated being connected of 7 left-channel signal input pin 31 with mix3018 audio-frequency power amplifier 30,5 the R channel digital-to-analogue inverted signal pin 32 of being designated of described AC1096 decoding chip 9 is designated being connected of 10 right channel signal input pin 33 with mix3018 audio-frequency power amplifier 30,1 the left passage positive output end 34 of being designated of described AC1096 decoding chip 9 is connected with the L channel positive pole 35 of loud speaker, 3 the left passage negative output terminal 36 of being designated of described AC1096 decoding chip 9 is connected with the L channel negative pole 37 of loud speaker, 16 the right passage positive output end 38 of being designated of described AC1096 decoding chip 9 is connected with the R channel positive pole 39 of loud speaker, 14 the right passage negative output terminal 40 of being designated of described AC1096 decoding chip 9 is connected with the R channel negative pole 41 of loud speaker, described CSR8635 Bluetooth chip 1 be designated 67 be connected with the negative pole 47 of microphone for connecting the analog signal pin 46 of the negative pole of microphone, 68 the positive pole 49 with microphone for the anodal analog signal pin 48 that connects microphone of being designated of described CSR8635 Bluetooth chip 1 is connected.
4 the L channel digital-to-analogue inverted signal pin 29 of being designated of described AC1096 decoding chip 9 is that by the 3rd electric capacity 42 and the 3rd inductance 43,7 the left-channel signal input pin 31 of being designated with mix3018 audio-frequency power amplifier 30 is connected successively for 4 the L channel digital-to-analogue inverted signal pin 29 of being designated of AC1096 decoding chip 9 with the mode being connected that is designated 7 left-channel signal input pin 31 of mix3018 audio-frequency power amplifier 30.
5 the R channel digital-to-analogue inverted signal pin 32 of being designated of described AC1096 decoding chip 9 is that by the 4th electric capacity 44 and the 4th inductance 45,10 the right channel signal input pin 33 of being designated with mix3018 audio-frequency power amplifier 30 is connected successively for 5 the R channel digital-to-analogue inverted signal pin 32 of being designated of AC1096 decoding chip 9 with the mode being connected that is designated 10 right channel signal input pin 33 of mix3018 audio-frequency power amplifier 30.
The method of the described power amplifier audio frequency apparatus with microphone, step is as follows:
Step 1: after being connected with the terminal with bluetooth module by Bluetooth antenna device when CSR8635 Bluetooth chip, if the terminal with bluetooth module sends audio data stream to CSR8635 Bluetooth chip, CSR8635 Bluetooth chip receives after this audio data stream through 12 the RF pin of being designated of CSR8635 Bluetooth chip, then respectively the analog signal of the R channel negative pole in audio data stream, the analog signal of the R channel positive pole in audio data stream, the analog signal of the analog signal of the L channel negative pole in audio data stream and the L channel positive pole in audio data stream is respectively via the analog signal output pin that is designated 6 the R channel negative pole for loud speaker of CSR8635 Bluetooth chip, the analog signal output pin that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip, the analog signal output pin that is designated 10 the L channel negative pole for loud speaker of the analog signal output pin of the L channel negative pole for loud speaker being designated of CSR8635 Bluetooth chip and CSR8635 Bluetooth chip sends to AC1096 decoding chip,
Step 2:AC1096 decoding chip is delivered to the analog signal of the analog signal of the R channel negative pole in audio data stream and the R channel positive pole in audio data stream R channel digital-to-analogue inverted signal pin of 5 of being designated by AC1096 decoding chip under TF mode card in mix3018 audio-frequency power amplifier, and the analog signal of the analog signal of L channel negative pole and L channel positive pole, 4 the L channel digital-to-analogue inverted signal pin of being designated by AC1096 decoding chip is delivered in mix3018 audio-frequency power amplifier under TF mode card;
Step 3:mix3018 audio-frequency power amplifier receives after the analog signal of L channel negative pole and the analog signal of L channel positive pole under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card, through mix3018 audio-frequency power amplifier, the analog signal of L channel negative pole and the analog signal of L channel positive pole that receive under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card are carried out after power amplification, again the analog signal of the R channel negative pole after power amplification, the analog signal of R channel positive pole, the analog signal of the analog signal of L channel negative pole and L channel positive pole sends to respectively the R channel negative pole of loud speaker, the R channel of loud speaker is anodal, the L channel negative pole of loud speaker and the L channel positive pole of loud speaker are play,
Step 4: when MP3 sends audio data stream by USB interface to AC1096 decoding chip, AC1096 decoding chip is delivered to the analog signal of the analog signal of the R channel negative pole in audio data stream and the R channel positive pole in audio data stream R channel digital-to-analogue inverted signal pin of 5 of being designated by AC1096 decoding chip under TF mode card in mix3018 audio-frequency power amplifier, and the analog signal of the analog signal of L channel negative pole and L channel positive pole, 4 the L channel digital-to-analogue inverted signal pin of being designated by AC1096 decoding chip is delivered in mix3018 audio-frequency power amplifier under TF mode card,
Step 5:mix3018 audio-frequency power amplifier receives after the analog signal of L channel negative pole and the analog signal of L channel positive pole under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card, through mix3018 audio-frequency power amplifier, the analog signal of L channel negative pole and the analog signal of L channel positive pole that receive under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card are carried out after power amplification, again the analog signal of the R channel negative pole after power amplification, the analog signal of R channel positive pole, the analog signal of the analog signal of L channel negative pole and L channel positive pole sends to respectively the R channel negative pole of loud speaker, the R channel of loud speaker is anodal, the L channel negative pole of loud speaker and the L channel positive pole of loud speaker are play,
Step 6: when starting microphone, the negative signal of microphone and the positive signal of microphone just respectively by described CSR8635 Bluetooth chip be designated 67 for be connected the analog signal pin of negative pole of microphone and described CSR8635 Bluetooth chip be designated 68 for being connected the anodal analog signal pin of microphone, be sent to CSR8635 Bluetooth chip, then via Bluetooth antenna device, send to the terminal with bluetooth module being attached thereto.
Apply such scheme of the present invention, just can realize can play mp3 go up with audio file can play again the audio stream sending with the terminal as notebook computer or mobile phone of wireless blue tooth module, versatility and compatibility strengthen greatly, can also transmit microphone signal by Bluetooth chip in addition.
Accompanying drawing explanation
Figure l is the syndeton schematic diagram of the power amplifier audio frequency apparatus with microphone of the present invention.
Embodiment
Below in conjunction with accompanying drawing, summary of the invention is described further:
Shown in Fig. 1, power amplifier audio frequency apparatus with microphone, comprise CSR8635 Bluetooth chip 1,12 the RF pin two of being designated of described CSR8635 Bluetooth chip 1 is connected with Bluetooth antenna device, described CSR8635 Bluetooth chip 1 can be connected with the terminal with bluetooth module by Bluetooth antenna device, described Bluetooth antenna device comprises Bluetooth antenna 3, described Bluetooth antenna 3, one utmost point of the first electric capacity 4, one utmost point of one utmost point of the first inductance 5 and the second inductance 6 is connected, another utmost point of the second inductance 6, one utmost point of the second electric capacity 7 and the input of band pass filter 8 are connected, the earth terminal of band pass filter 8, another utmost point of the first electric capacity 4, another of another utmost point of the second electric capacity 7 and the first inductance 5 be ground connection extremely all, the output of band pass filter 8 is connected with 12 the RF pin two of being designated of CSR8635 Bluetooth chip 1, the analog signal output pin 10 that is designated 6 the R channel negative pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 12 the GPIO pin 11 of being designated of AC1096 decoding chip 9, the analog signal output pin 12 that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 13 the GPIO pin 13 of being designated of AC1096 decoding chip 9, the analog signal output pin 14 that is designated 9 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 10 the GPIO pin 15 of being designated of AC1096 decoding chip 9, the analog signal output pin 16 that is designated 10 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip 1 is connected with 11 the GPIO pin 17 of being designated of AC1096 decoding chip 9, the MOSI interface 19 of SPI18 is connected with 30 the PIO pin 20 of being designated of CSR8635 Bluetooth chip 1, the MISO interface 22 of SPI21 is connected with 28 the PIO pin 23 of being designated of CSR8635 Bluetooth chip 1, the CS interface 24 of SPI21 is connected with 24 the PIO pin 25 of being designated of CSR8635 Bluetooth chip 1, the CLK interface 26 of SPI21 is connected with 34 the PIO pin 27 of being designated of CSR8635 Bluetooth chip 1, described SPI21 turns spi bus interface chip 28 with usb bus and is connected, described usb bus turns spi bus interface chip 28 and can be connected with the USB interface of external equipment, by the USB interface of external equipment, just can carry out data communication with external equipment and import even the object that required functional module realizes expanding function, 24 the USBDM pin 61 of being designated of described AC1096 decoding chip is connected with the data wire negative pole 62 of the USB interface of MP3,25 the USBDM pin 63 of being designated of described AC1096 decoding chip is connected with the data wire positive pole 64 of the USB interface of MP3,4 the L channel digital-to-analogue inverted signal pin 29 of being designated of described AC1096 decoding chip 9 is designated being connected of 7 left-channel signal input pin 31 with mix3018 audio-frequency power amplifier 30,5 the R channel digital-to-analogue inverted signal pin 32 of being designated of described AC1096 decoding chip 9 is designated being connected of 10 right channel signal input pin 33 with mix3018 audio-frequency power amplifier 30,1 the left passage positive output end 34 of being designated of described AC1096 decoding chip 9 is connected with the L channel positive pole 35 of loud speaker, 3 the left passage negative output terminal 36 of being designated of described AC1096 decoding chip 9 is connected with the L channel negative pole 37 of loud speaker, 16 the right passage positive output end 38 of being designated of described AC1096 decoding chip 9 is connected with the R channel positive pole 39 of loud speaker, 14 the right passage negative output terminal 40 of being designated of described AC1096 decoding chip 9 is connected with the R channel negative pole 41 of loud speaker, described CSR8635 Bluetooth chip 1 be designated 67 be connected with the negative pole 47 of microphone for connecting the analog signal pin 46 of the negative pole of microphone, described CSR8635 Bluetooth chip 1 be designated 68 be connected with the positive pole 49 of microphone for connecting the analog signal pin 48 of the negative pole of microphone, the effect of the second described inductance 6 is used for carrying out fault test, when there is Receiver Problem, the second inductance 6 is taken apart to the buffer action of the front and back sectionalization test that just can play Bluetooth antenna device, described the first electric capacity and the first inductance have formed filter circuit, can play to the audio signal receiving from Bluetooth antenna the effect of filtering, the second described electric capacity has also formed filter circuit, can further to the audio signal receiving from Bluetooth antenna, play the effect of filtering.Described AC1096 decoding chip 9 be designated 4 L channel digital-to-analogue inverted signal pin 29 with the mode being connected that is designated 7 left-channel signal input pin 31 of mix3018 audio-frequency power amplifier 30 be 4 the L channel digital-to-analogue inverted signal pin 29 of being designated of AC1096 decoding chip 9 by the 3rd electric capacity 42 and the 3rd inductance 43,7 the left-channel signal input pin 31 of being designated with mix3018 audio-frequency power amplifier 30 is connected successively, described the 3rd electric capacity and the 3rd inductance are to make signal clearer for filtering.Described AC1096 decoding chip 9 be designated 5 R channel digital-to-analogue inverted signal pin 32 with the mode being connected that is designated 10 right channel signal input pin 33 of mix3018 audio-frequency power amplifier 30 be 5 the R channel digital-to-analogue inverted signal pin 32 of being designated of AC1096 decoding chip 9 by the 4th electric capacity 44 and the 4th inductance 45,10 the right channel signal input pin 33 of being designated with mix3018 audio-frequency power amplifier 30 is connected successively, described the 4th electric capacity and the 4th inductance are to make signal clearer for filtering.
The method of the described power amplifier audio frequency apparatus with microphone, step is as follows:
Step 1: after being connected with the terminal with bluetooth module by Bluetooth antenna device when CSR8635 Bluetooth chip, if the terminal with bluetooth module sends audio data stream to CSR8635 Bluetooth chip, CSR8635 Bluetooth chip receives after this audio data stream through 12 the RF pin of being designated of CSR8635 Bluetooth chip, then respectively the analog signal of the R channel negative pole in audio data stream, the analog signal of the R channel positive pole in audio data stream, the analog signal of the analog signal of the L channel negative pole in audio data stream and the L channel positive pole in audio data stream is respectively via the analog signal output pin that is designated 6 the R channel negative pole for loud speaker of CSR8635 Bluetooth chip, the analog signal output pin that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip, the analog signal output pin that is designated 10 the L channel negative pole for loud speaker of the analog signal output pin of the L channel negative pole for loud speaker being designated of CSR8635 Bluetooth chip and CSR8635 Bluetooth chip sends to AC1096 decoding chip,
Step 2:AC1096 decoding chip is delivered to the analog signal of the analog signal of the R channel negative pole in audio data stream and the R channel positive pole in audio data stream R channel digital-to-analogue inverted signal pin of 5 of being designated by AC1096 decoding chip under TF mode card in mix3018 audio-frequency power amplifier, and the analog signal of the analog signal of L channel negative pole and L channel positive pole, 4 the L channel digital-to-analogue inverted signal pin of being designated by AC1096 decoding chip is delivered in mix3018 audio-frequency power amplifier under TF mode card;
Step 3:mix3018 audio-frequency power amplifier receives after the analog signal of L channel negative pole and the analog signal of L channel positive pole under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card, through mix3018 audio-frequency power amplifier, the analog signal of L channel negative pole and the analog signal of L channel positive pole that receive under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card are carried out after power amplification, again the analog signal of the R channel negative pole after power amplification, the analog signal of R channel positive pole, the analog signal of the analog signal of L channel negative pole and L channel positive pole sends to respectively the R channel negative pole of loud speaker, the R channel of loud speaker is anodal, the L channel negative pole of loud speaker and the L channel positive pole of loud speaker are play,
Step 4: when MP3 sends audio data stream by USB interface to AC1096 decoding chip, AC1096 decoding chip is delivered to the analog signal of the analog signal of the R channel negative pole in audio data stream and the R channel positive pole in audio data stream R channel digital-to-analogue inverted signal pin of 5 of being designated by AC1096 decoding chip under TF mode card in mix3018 audio-frequency power amplifier, and the analog signal of the analog signal of L channel negative pole and L channel positive pole, 4 the L channel digital-to-analogue inverted signal pin of being designated by AC1096 decoding chip is delivered in mix3018 audio-frequency power amplifier under TF mode card,
Step 5:mix3018 audio-frequency power amplifier receives after the analog signal of L channel negative pole and the analog signal of L channel positive pole under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card, through mix3018 audio-frequency power amplifier, the analog signal of L channel negative pole and the analog signal of L channel positive pole that receive under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card are carried out after power amplification, again the analog signal of the R channel negative pole after power amplification, the analog signal of R channel positive pole, the analog signal of the analog signal of L channel negative pole and L channel positive pole sends to respectively the R channel negative pole of loud speaker, the R channel of loud speaker is anodal, the L channel negative pole of loud speaker and the L channel positive pole of loud speaker are play,
Step 6: when starting microphone, the negative signal of microphone and the positive signal of microphone just respectively by described CSR8635 Bluetooth chip be designated 67 for be connected the analog signal pin of negative pole of microphone and described CSR8635 Bluetooth chip be designated 68 for being connected the anodal analog signal pin of microphone, be sent to CSR8635 Bluetooth chip, then via Bluetooth antenna device, send to the terminal with bluetooth module being attached thereto.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, the any simple modification that above embodiment is done, be equal to replacement and improvement etc., within all still belonging to the protection range of technical solution of the present invention.
Claims (4)
1. the power amplifier audio frequency apparatus with microphone, it is characterized in that comprising CSR8635 Bluetooth chip, 12 the RF pin of being designated of described CSR8635 Bluetooth chip is connected with Bluetooth antenna device, described CSR8635 Bluetooth chip can be connected with the terminal with bluetooth module by Bluetooth antenna device, described Bluetooth antenna device comprises Bluetooth antenna, described Bluetooth antenna, one utmost point of the first electric capacity, one utmost point of the first inductance and a utmost point of the second inductance are connected, another utmost point of the second inductance, one utmost point of the second electric capacity and the input of band pass filter are connected, the earth terminal of band pass filter, another utmost point of the first electric capacity, another of another utmost point of the second electric capacity and the first inductance be ground connection extremely all, the output of band pass filter is connected with 12 the RF pin of being designated of CSR8635 Bluetooth chip, the analog signal output pin of the R channel negative pole for loud speaker being designated of CSR8635 Bluetooth chip is connected with 12 the GPIO pin of being designated of AC1096 decoding chip, the analog signal output pin that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip is connected with 13 the GPIO pin of being designated of AC1096 decoding chip, the analog signal output pin that is designated 9 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip is connected with 10 the GPIO pin of being designated of AC1096 decoding chip, the analog signal output pin that is designated 10 the L channel negative pole for loud speaker of CSR8635 Bluetooth chip is connected with 11 the GPIO pin of being designated of AC1096 decoding chip, the MOSI interface of SPI is connected with 30 the PIO pin of being designated of CSR8635 Bluetooth chip, the MISO interface of SPI is connected with 28 the PIO pin of being designated of CSR8635 Bluetooth chip, the CS interface of SPI is connected with 24 the PIO pin of being designated of CSR8635 Bluetooth chip, the CLK interface of SPI is connected with 34 the PIO pin of being designated of CSR8635 Bluetooth chip, described SPI turns spi bus interface chip with usb bus and is connected, 24 the USBDM pin of being designated of described AC1096 decoding chip is connected with the data wire negative pole of the USB interface of MP3,25 the USBDM pin of being designated of described AC1096 decoding chip is connected with the data wire positive pole of the USB interface of MP3,4 the L channel digital-to-analogue inverted signal pin of being designated of described AC1096 decoding chip is designated being connected of 7 left-channel signal input pin with mix3018 audio-frequency power amplifier, 5 the R channel digital-to-analogue inverted signal pin of being designated of described AC1096 decoding chip is designated being connected of 10 right channel signal input pin with mix3018 audio-frequency power amplifier, 1 the left passage positive output end of being designated of described AC1096 decoding chip is connected with the L channel positive pole of loud speaker, 3 the left passage negative output terminal of being designated of described AC1096 decoding chip is connected with the L channel negative pole of loud speaker, 16 the right passage positive output end of being designated of described AC1096 decoding chip is connected with the R channel positive pole of loud speaker, 14 the right passage negative output terminal of being designated of described AC1096 decoding chip is connected with the R channel negative pole of loud speaker.
2. the power amplifier audio frequency apparatus with microphone according to claim 1, is characterized in that 4 the L channel digital-to-analogue inverted signal pin of being designated of described AC1096 decoding chip is that 7 the left-channel signal input pin of being designated with mix3018 audio-frequency power amplifier is connected by the 3rd electric capacity and the 3rd inductance successively for 4 the L channel digital-to-analogue inverted signal pin of being designated of AC1096 decoding chip with the mode being connected that is designated 7 left-channel signal input pin of mix3018 audio-frequency power amplifier.
3. the power amplifier audio frequency apparatus with microphone according to claim 1, is characterized in that 5 the R channel digital-to-analogue inverted signal pin of being designated of described AC1096 decoding chip is that 10 the right channel signal input pin of being designated with mix3018 audio-frequency power amplifier is connected by the 4th electric capacity and the 4th inductance successively for 5 the R channel digital-to-analogue inverted signal pin of being designated of AC1096 decoding chip with the mode being connected that is designated 10 right channel signal input pin of mix3018 audio-frequency power amplifier.
4. the method for the power amplifier audio frequency apparatus with microphone according to claim 1, is characterized in that, step is as follows:
Step 1: after being connected with the terminal with bluetooth module by Bluetooth antenna device when CSR8635 Bluetooth chip, if the terminal with bluetooth module sends audio data stream to CSR8635 Bluetooth chip, CSR8635 Bluetooth chip receives after this audio data stream through 12 the RF pin of being designated of CSR8635 Bluetooth chip, then respectively the analog signal of the R channel negative pole in audio data stream, the analog signal of the R channel positive pole in audio data stream, the analog signal of the analog signal of the L channel negative pole in audio data stream and the L channel positive pole in audio data stream is respectively via the analog signal output pin that is designated 6 the R channel negative pole for loud speaker of CSR8635 Bluetooth chip, the analog signal output pin that is designated 7 the R channel positive pole for loud speaker of CSR8635 Bluetooth chip, the analog signal output pin that is designated 10 the L channel negative pole for loud speaker of the analog signal output pin of the L channel negative pole for loud speaker being designated of CSR8635 Bluetooth chip and CSR8635 Bluetooth chip sends to AC1096 decoding chip,
Step 2:AC1096 decoding chip is delivered to the analog signal of the analog signal of the R channel negative pole in audio data stream and the R channel positive pole in audio data stream R channel digital-to-analogue inverted signal pin of 5 of being designated by AC1096 decoding chip under TF mode card in mix3018 audio-frequency power amplifier, and the analog signal of the analog signal of L channel negative pole and L channel positive pole, 4 the L channel digital-to-analogue inverted signal pin of being designated by AC1096 decoding chip is delivered in mix3018 audio-frequency power amplifier under TF mode card;
Step 3:mix3018 audio-frequency power amplifier receives after the analog signal of L channel negative pole and the analog signal of L channel positive pole under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card, through mix3018 audio-frequency power amplifier, the analog signal of L channel negative pole and the analog signal of L channel positive pole that receive under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card are carried out after power amplification, again the analog signal of the R channel negative pole after power amplification, the analog signal of R channel positive pole, the analog signal of the analog signal of L channel negative pole and L channel positive pole sends to respectively the R channel negative pole of loud speaker, the R channel of loud speaker is anodal, the L channel negative pole of loud speaker and the L channel positive pole of loud speaker are play,
Step 4: when MP3 sends audio data stream by USB interface to AC1096 decoding chip, AC1096 decoding chip is delivered to the analog signal of the analog signal of the R channel negative pole in audio data stream and the R channel positive pole in audio data stream R channel digital-to-analogue inverted signal pin of 5 of being designated by AC1096 decoding chip under TF mode card in mix3018 audio-frequency power amplifier, and the analog signal of the analog signal of L channel negative pole and L channel positive pole, 4 the L channel digital-to-analogue inverted signal pin of being designated by AC1096 decoding chip is delivered in mix3018 audio-frequency power amplifier under TF mode card,
Step 5:mix3018 audio-frequency power amplifier receives after the analog signal of L channel negative pole and the analog signal of L channel positive pole under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card, through mix3018 audio-frequency power amplifier, the analog signal of L channel negative pole and the analog signal of L channel positive pole that receive under the analog signal of the R channel negative pole under TF mode card and the analog signal of R channel positive pole and TF mode card are carried out after power amplification, again the analog signal of the R channel negative pole after power amplification, the analog signal of R channel positive pole, the analog signal of the analog signal of L channel negative pole and L channel positive pole sends to respectively the R channel negative pole of loud speaker, the R channel of loud speaker is anodal, the L channel negative pole of loud speaker and the L channel positive pole of loud speaker are play,
Step 6: when starting microphone, the negative signal of microphone and the positive signal of microphone just respectively by described CSR8635 Bluetooth chip be designated 67 for be connected the analog signal pin of negative pole of microphone and described CSR8635 Bluetooth chip be designated 68 for being connected the anodal analog signal pin of microphone, be sent to CSR8635 Bluetooth chip, then via Bluetooth antenna device, send to the terminal with bluetooth module being attached thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478505.9A CN104202708A (en) | 2014-09-18 | 2014-09-18 | Power amplifier audio device with microphone and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478505.9A CN104202708A (en) | 2014-09-18 | 2014-09-18 | Power amplifier audio device with microphone and method thereof |
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| Publication Number | Publication Date |
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| CN104202708A true CN104202708A (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410478505.9A Pending CN104202708A (en) | 2014-09-18 | 2014-09-18 | Power amplifier audio device with microphone and method thereof |
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Application publication date: 20141210 |