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Recording format

There are three common recording formats: LP (long time, poor sound quality) SP (moderate time, good sound quality) HQ (short time, high sound quality)

Memory capacity

Digital voice recorders use analog recording, and use built-in flash memory to store recorded information. The characteristic of the flash memory is that the information stored on it will not be lost after the power is cut off. The larger the capacity, the longer the recording time.

Signal to noise ratio

In general, the larger the signal-to-noise ratio, the smaller the noise mixed in the signal, and the higher the sound quality of the sound playback. The signal-to-noise ratio should generally not be lower than 70dB, and the signal-to-noise ratio of high-fidelity sound quality should reach above 110dB.

PCM

The linear PCM format is a completely uncompressed format used during recording. It does not compress the audio source and is faithful to the original sound to the greatest extent.

Digital noise reduction

The digital noise reduction function can effectively filter the noise part of the sound source during the recording process. After recognition, it will be processed to play a clear sound.

Voice-activated recording

Voice-activated recording is a way to save storage capacity and extend recording time. You can stop recording when there is no sound signal, and resume work when there is a sound signal.

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