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    This voice or sound recorder built with ISD1012, ISD1016 and ISD1020 which are produced by ISD and allow sound voice recording and play-back. The last 2 digits show the maximum legth of recording time in seconds. This circuits contains a non-volatile memory which can memorise sound or voice without power supply up to 10 years. The circuit contains a microphone amplifier and a speaker amplifier. We can say it’s a digital voice recorder.

    S1 switch is for recording / play-back ( recording in ON position ). When S2 is OFF the IC goes in power down mode. S3 starts the recording or play-back and must be a push-button.
    For more voice recorder circuits check the list bellow.

    Sound recorder circuit diagram

    sound voice recorder circuit schematic

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    39 Responses to "Voice, Sound Recorder Circuit"

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    1. shahid rafique says: on March 6, 2009 at 2:24 pm

      you have not mentioned the recording time of this circuit &also not displayed the lay out of PCB

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    2. vinaykumar says: on April 13, 2009 at 4:23 pm

      can u send the total information to do as mini project…………..

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    3. how i can find ur projact ic

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    4. Is this IC available in India.

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    5. how is multiplexing done

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    6. how is multiplexing programmed

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    7. MZWABANTU says: on July 24, 2009 at 10:05 am

      i have used it before for my analog project and it works perfect

      Like or Dislike: Thumb up 1 Thumb down 0

      • can u send me the component details and where the recording/recorded sound will be stored in mean time of recording

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    8. can’t you send me a beautiful circuit that I can build on my own?

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    9. i wish to carry out a project that can record human voice.can u asist?

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    10. what is there is that, if u have any simple circuit on this project that can be easily explain to student

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    11. shailendra says: on August 29, 2009 at 9:10 am

      sir,can you please send me the full details of this project as i want to prepare for my engineering project.
      My mail id- gaur_shailu85@yahoo.com

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    12. sir, i need the recorder circuit details so that i can do the mini project , so please send me the details of the project to my mail id sir,, my id s “meetaravindc@gmail.com”,

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    13. kamogelo says: on October 3, 2009 at 2:11 pm

      how do u adjust the recording time of the circuit

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    14. sir can u please send me the details of this circuit and the sound recorder,for doing a project on this.

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    15. expecting ur reply at the earliest.

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    16. kindly tell me the circuit delays…

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    17. Sir, this is lovely. I would love to get the detail and make my final project.

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    18. can we simulate this on computer?? if yes which simulator?

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    19. can we simulate this on computer? if yes which simulator?

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    20. Hello Sir I want to one carcits and include voice system,Video System,How to prepare this thing and how many requyar

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    21. Tanimola Olawale says: on May 26, 2011 at 10:14 pm

      Kindly send me the complete datasheet of the project, I am interested in reading it and I would like to practice it, thank you.

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    22. Aldo Simon says: on June 14, 2011 at 11:17 am

      Is there any simple circuit more than that?

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    23. This is superb more strength

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    24. ready to purchase can u assit whether avilable in india mumbai

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    25. Nigreats tech says: on October 6, 2011 at 10:44 am

      I have done the circuit but its not working,pls can u explain more deeper because i need to do it urgently

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    26. Sir/Madam,
      Let me have the complete circuit details to make a mini daily attendance recorder system for 30 members.

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    27. Can you send me a schematic that contains a memory stick or sd card to store the voice data?

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    28. sir,I need expalanation about overall cct

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    29. Anonymous says: on March 17, 2012 at 12:54 am

      Could yu give me the info as to where i can find the ic??? please I’m really bored

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    30. iam gowtham ihave more circuits

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      • can you share with us…
        i need a voice recorder circuit and play it back same with LED output

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    31. good eveng sir , plz send the circuit diagram& complete details about the voice mouse because i want to implement to implement on voice mail. soooooooo plz sir………..
      plz send as early as possible

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    32. plz send the circuit diagram& complete details about the voice recoder

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    33. Sir,please send me d complete proj details..

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    34. Eliot L. Sims says: on January 31, 2014 at 8:10 pm

      Can this circuit be reconfigured? to fit into a 3/4″ by 1 3/4″ cylinder with mic and control on one end with speaker on the other end and using a small flat lithium battery?

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