A digital voice recorder captures audio using a built-in microphone or an external microphone that is connected to the device. Here is a step-by-step explanation of the process:
- Sound waves are produced by the person or source speaking into the microphone.
- The microphone converts these sound waves into electrical energy.
- The analog electrical signals are then converted into digital format through an analog-to-digital converter (ADC).
- The digital signal is processed and encoded into a digital audio file format like WAV or MP3.
- The audio file is stored in the recorder's memory or on an external storage device, such as an SD card.
- The captured audio can be played back on the recorder itself or transferred to a computer or other devices for further processing, sharing, or playback.
Overall, a digital voice recorder captures audio by converting analog sound waves into digital signals and storing them as audio files.