You need a mircophone and a voice recorder on your laptop.www.apowersoft.com/free-audio-recorder-online This app is one of your best choices to record voice through microphone. Just run the app and forward to "Audio Input" to choose "Microphone". Then click the "Record" button to start your recording.
If you're using laptop or PC and has a microphone or connected to a microphone, you can use Cinch Audio Recorder. You can get it for free here by following the instructions www.getitreview.com/how-to-get-cinch-audio-recorder-for-free