http://www.elecfree.com/electronic/digital-voice-record-and-playback-project-by-isd2560p/ Sun, 21 Mar 2010 07:29:29 +0000 http://wordpress.org/?v=2.6.5 http://www.elecfree.com/electronic/digital-voice-record-and-playback-project-by-isd2560p/#comment-1759 Digital Voice Record and Playback Project by ISD2560P | Wiparat Circuit Electronics Mon, 03 Aug 2009 01:26:30 +0000 http://www.elecfree.com/electronic/digital-voice-record-and-playback-project-by-isd2560p/#comment-1759 [...] This project is based on ISD2560P IC which allows us to record 60 seconds voice and playback it with very high quality. As shown in the schematic, we input the voice by using an electret microphone. If a dynamic microphone is used, R2,R3,R4 resistors and C3,C5,C7 capacitors will be omitted and microphone will be connected to 17 and 18 numbered pins directly. Since it has better frequency response, we choose electret microphone in this project. [...] Link [...] [...] This project is based on ISD2560P IC which allows us to record 60 seconds voice and playback it with very high quality. As shown in the schematic, we input the voice by using an electret microphone. If a dynamic microphone is used, R2,R3,R4 resistors and C3,C5,C7 capacitors will be omitted and microphone will be connected to 17 and 18 numbered pins directly. Since it has better frequency response, we choose electret microphone in this project. [...] Link [...]

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