In digital signal processing, upsampling, expansion, and interpolation are terms associated with the process of resampling in a multi-rate digital signal processing system. Upsampling can be synonymous with expansion, or it can describe an entire process of expansion and filtering (interpolation).[1][2][3] When upsampling is performed on a sequence of samples of a signal or other continuous function, it produces an approximation of the sequence that would have been obtained by sampling the signal at a higher rate (or density, as in the case of a photograph). For example, if compact disc audio at 44,100 samples/second is upsampled by a factor of 5/4, the resulting sample-rate is 55,125.
Fig 1: Depiction of one dot product, resulting in one output sample (in green), for the case L=4, n=9, j=3. Three conceptual "inserted zeros" are depicted between each pair of input samples. Omitting them from the calculation is what distinguishes a multirate filter from a monorate filter.
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system. Upsampling can be synonymous with expansion, or it can describe an entire process of expansion and filtering (interpolation). When upsampling is performed...
an Intel Arc Tile GPU. Intel XeSS is a real-time deep learning image upsampling technology developed primarily for use in video games as a competitor...
custom input and output resolutions. The linear scale factor used for upsampling the input resolution to the output resolution. For example, a scene rendered...
Signaling (telecommunications) Spread spectrum Spectral component Transverter Upsampling Orders of magnitude (frequency) The term spatial period, sometimes used...
the PlayStation version over Xbox due to anti-aliasing, shadows, and upsampling enhancements, though noted improvements were otherwise sparse and criticized...
samples, thereby converting the data to a higher sample rate, a form of upsampling. When the resulting higher-rate samples are converted to analog, a less...
signal (such as a sampled audio signal) to that of a higher sampling rate (Upsampling) using various digital filtering techniques (for example, convolution...
and 3D rendering are also affected by this issue. Paradoxically, when upsampling (scaling up) an image, the result processed in a "wrong" (non-physical)...
Major features in this version include new Smart Sharpen, Intelligent Upsampling, and Camera Shake Reduction for reducing blur caused by camera shake....
theorem Oversampling Sample and hold Sampling frequency Undersampling Upsampling Audio signal processing Audio noise reduction Speech processing Equalization...
custom input and output resolutions. The linear scale factor used for upsampling the input resolution to the output resolution. For example, a scene rendered...
sign-ons are supported. Features include new AI-assisted PowerTRACE, bitmap upsampling, and bitmap artifact compression removal; new Stylized effects such as...
Lanczos resampling is based on a windowed sinc function as a practical upsampling filter approximating the ideal sinc function. Lanczos resampling is widely...
recombining the outputs of multiple receivers) is basically a matter of upsampling each one at a rate commensurate with the total bandwidth to be created...
Returnal's native resolution is around 1080p. The developers used temporal upsampling to get to 1440p and then checkerboard rendering to get to 4K. Returnal...
create a 3D surface from a point cloud through either downsampling or upsampling. In numerical analysis to handle contributions of geometry where it is...
noise shaping, and resampling options in the MQA "rendering" step. MQA's upsampling filter impulse responses were published by July 2017. A critical review...
like: Munsil, Don; Stacey Spears (2003). "DVD Player Benchmark – Chroma Upsampling Error". Secrets of Home Theater and High Fidelity. Archived from the original...
waveform with much higher temporal resolution than the sample period by upsampling each record before averaging. In this case the temporal uncertainty may...
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