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upsampling
This term is primarily used in digital signal processing, audio engineering, and image processing. It describes the technical act of increasing the sample rate, which is often necessary to avoid aliasing during further processing or to match the hardware requirements of a playback device.
While it is often used interchangeably with "interpolation" in casual conversation, upsampling specifically refers to the increase in the number of samples, whereas interpolation is the mathematical method used to fill in the gaps between those samples. In a commercial context, it is frequently associated with "upscaling" in video technology, though upsampling is the more precise technical term for the underlying signal process.
Meanings
Examples
The audio engineer is upsampling the old recording to improve its fidelity.
Upsampling the signal allows for a more precise filtering process.
I wonder if upsampling this low resolution image will actually make it look sharper.
We need to start upsampling the data before we run the analysis.
The software handles the upsampling automatically to match the output device.
Can you try upsampling the sample rate to 96 kHz?
The process of upsampling involves inserting zeros between the original samples.
Maybe upsampling will remove some of these jagged edges in the waveform.