Claims (8)
一種麥克風電路，其裝設於一電子裝置內，該麥克風電路包括依次電性連接之電源模組、濾波模組及訊號輸出模組，所述電源模組為該麥克風電路提供一工作電壓，所述濾波模組用於除去該電路中訊號之雜波，所述訊號輸出模組用於傳輸濾波後之訊號，其改良在於：該麥克風電路還包括一訊號處理模組及一與該訊號處理模組電性連接之開關模組，電源模組及濾波模組藉由該訊號處理模組電性連接，該訊號處理模組用於將音頻訊號轉換為電訊號，所述訊號處理模組包括訊號處理晶片、一第一電阻、一第二電阻及一電容，該訊號處理晶片包括一第一引腳、一第二引腳、一第三引腳、一第四引腳、一第五引腳、一第一電阻、一第二電阻及一電容，所述第一引腳與所述濾波模組電性連接，用於訊號輸出，所述第二引腳與所述濾波模組連接，依據不同之訊號形式，該第二引腳用於接地或訊號輸出；所述第三引腳依據不同之訊號輸出而用於接地或增益設定；所述第四引腳用於電壓輸入，其與電源模組電性連接；所述第五引腳用於將所述訊號處理晶片接地；所述第一電阻、第二電阻及電容依次串聯後一端連接至所述第二引腳，另一端接地，且所述第三引腳連接至所述第一電阻與第二電阻之間，該開關模組藉由切換至導通或斷開狀態而控制訊號處理模組輸出單端訊號或差動訊號。
A microphone circuit is disposed in an electronic device, the microphone circuit includes a power module, a filter module, and a signal output module that are electrically connected in sequence, and the power module provides a working voltage for the microphone circuit. The filter module is configured to remove the clutter of the signal in the circuit, and the signal output module is configured to transmit the filtered signal. The improvement is that the microphone circuit further includes a signal processing module and a signal processing module. The switch module, the power module and the filter module are electrically connected by the signal processing module, the signal processing module is configured to convert the audio signal into an electrical signal, and the signal processing module includes a signal Processing the chip, a first resistor, a second resistor, and a capacitor, the signal processing chip includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin a first resistor, a second resistor, and a capacitor, the first pin is electrically connected to the filter module for signal output, and the second pin is connected to the filter module, according to Different signals The second pin is used for grounding or signal output; the third pin is used for grounding or gain setting according to different signal outputs; the fourth pin is used for voltage input, and is electrically connected to the power module. The fifth pin is used to ground the signal processing chip; the first resistor, the second resistor and the capacitor are sequentially connected in series, one end is connected to the second pin, and the other end is grounded, and the The third pin is connected between the first resistor and the second resistor, and the switch module controls the signal processing module to output a single-ended signal or a differential signal by switching to an on or off state.
如申請專利範圍第1項所述之麥克風電路，其中該訊號處理晶片是由單端麥克風晶片和差動麥克風晶片整合而成。
The microphone circuit of claim 1, wherein the signal processing chip is formed by integrating a single-ended microphone chip and a differential microphone chip.
如申請專利範圍第2項所述之麥克風電路，其中所述訊號處理晶片包括一收聲孔，所述收聲孔用於接收音頻訊號，並將該音頻訊號轉換為電訊號。
The microphone circuit of claim 2, wherein the signal processing chip comprises a sound receiving hole, the sound receiving hole is for receiving an audio signal, and converting the audio signal into an electrical signal.
如申請專利範圍第1項所述之麥克風電路，其中所述開關模組包括一第一開關及一第二開關，所述第一開關與第二引腳及第一電阻連接，所述第二開關一端與第三引腳連接，其另一端接地。
The microphone circuit of claim 1, wherein the switch module includes a first switch and a second switch, the first switch is connected to the second pin and the first resistor, and the second One end of the switch is connected to the third pin, and the other end is grounded.
如申請專利範圍第4項所述之麥克風電路，其中所述第一開關包括一第一按鍵及一第一接觸端，當所述第一按鍵與第一接觸端接觸時，第一開關導通，所述第二引腳與第一電阻電性連接；當第一按鍵與第一接觸端斷開時，所述第二引腳及第一電阻斷開。
The microphone circuit of claim 4, wherein the first switch comprises a first button and a first contact end, and when the first button is in contact with the first contact end, the first switch is turned on, The second pin is electrically connected to the first resistor; when the first button is disconnected from the first contact, the second pin and the first resistor are disconnected.
如申請專利範圍第5項所述之麥克風電路，其中所述第二開關包括一第二按鍵及一第二接觸端，當第二按鍵與第二接觸端接觸時，第二開關導通，第二電阻及電容被短路，第三引腳直接接地。當第二按鍵與第二接觸端斷開時，第三引腳與第二電阻及電容電性連接。
The microphone circuit of claim 5, wherein the second switch comprises a second button and a second contact end, and when the second button is in contact with the second contact end, the second switch is turned on, the second The resistor and capacitor are shorted and the third pin is directly grounded. When the second button is disconnected from the second contact end, the third pin is electrically connected to the second resistor and the capacitor.
如申請專利範圍第6項所述之麥克風電路，其中當所述麥克風電路輸出單端訊號時，第一按鍵與第一接觸端接觸，第一開關導通，第二引腳與第一電阻電性連接至第三引腳；第二按鍵與第二接觸端接觸，第二開關導通，第三引腳直接接地，該第二引腳接地，第一引腳引腳輸出電訊號經濾波模組及訊號輸出模組輸出。
The microphone circuit of claim 6, wherein when the microphone circuit outputs a single-ended signal, the first button is in contact with the first contact end, the first switch is turned on, and the second pin is electrically connected to the first resistor. Connected to the third pin; the second button is in contact with the second contact end, the second switch is turned on, the third pin is directly grounded, the second pin is grounded, and the first pin pin outputs a signal through the filter module and Signal output module output.
如申請專利範圍第6項所述之麥克風電路，其中當所述麥克風電路輸出差動訊號時，第一按鍵與第一接觸端斷開，第一開關斷開，第二引腳與第一電阻斷開；第二按鍵與第二接觸端斷開，第二開關斷開，第二電阻及電容與第三引腳電性連接，第一引腳和第二引腳輸出電訊號經濾波模組及訊號輸出模組輸出。
The microphone circuit of claim 6, wherein when the microphone circuit outputs a differential signal, the first button is disconnected from the first contact end, the first switch is disconnected, and the second pin and the first resistor are Disconnected; the second button is disconnected from the second contact end, the second switch is disconnected, the second resistor and the capacitor are electrically connected to the third pin, and the first pin and the second pin output the electrical signal through the filter module And signal output module output.