P playmaker New Member Feb 17, 2010 #1 Hi! I am building the a speech recognition circuit using HM2007. The schematics is at this site: How to Build a Speech Recognition Circuit Page 2 All of the microphones I know have 1 pin. This circuit requires a 2-pin microphone. Do you know where can I find it ? Thank you very much!
Hi! I am building the a speech recognition circuit using HM2007. The schematics is at this site: How to Build a Speech Recognition Circuit Page 2 All of the microphones I know have 1 pin. This circuit requires a 2-pin microphone. Do you know where can I find it ? Thank you very much!
Nigel Goodwin Super Moderator Most Helpful Member Feb 17, 2010 #2 playmaker said: Hi! I am building the a speech recognition circuit using HM2007. The schematics is at this site: How to Build a Speech Recognition Circuit Page 2 All of the microphones I know have 1 pin. This circuit requires a 2-pin microphone. Do you know where can I find it ? Thank you very much! Click to expand... All microphones have (at least) two connections - the one in that circuit is a standard electret type. The second connection is the 'chassis' of the insert, for screening purposes.
playmaker said: Hi! I am building the a speech recognition circuit using HM2007. The schematics is at this site: How to Build a Speech Recognition Circuit Page 2 All of the microphones I know have 1 pin. This circuit requires a 2-pin microphone. Do you know where can I find it ? Thank you very much! Click to expand... All microphones have (at least) two connections - the one in that circuit is a standard electret type. The second connection is the 'chassis' of the insert, for screening purposes.
P playmaker New Member Feb 17, 2010 #3 Sorry! but I don't get what you mean with 'the second connection is the 'chassis' of the insert'. How should I connect the insert/plug of the microphone to the circuit ? Last edited: Feb 17, 2010
Sorry! but I don't get what you mean with 'the second connection is the 'chassis' of the insert'. How should I connect the insert/plug of the microphone to the circuit ?
Nigel Goodwin Super Moderator Most Helpful Member Feb 17, 2010 #4 Post a picture of your specific mike, and we'll show you. EDIT: Have a look at the bottom of this page for an example: **broken link removed** Last edited: Feb 17, 2010
Post a picture of your specific mike, and we'll show you. EDIT: Have a look at the bottom of this page for an example: **broken link removed**