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Theory of Upsampled Digital Audio - MLSSA
http://www.mlssa.com/pdf/Upsampling-theory-rev-2.pdf
appear at the output of the digital filter and this ultrasonic energy is input to the DAC. An upsampling digital filter still attenuates the ultrasonic images to a certain degree, the attenuation increasing with frequency. Upsampling is therefore a compromise between using a sharp anti-imaging filter and using none at all. An upsampling digital
Upsampling vs. Oversampling for Digital Audio | Audioholics
https://www.audioholics.com/audio-technologies/upsampling-vs-oversampling-for-digital-audio
Upsampling is on the other hand a rate conversion from one rate to another arbitrary rate. Oversampling in the ADC has been around for quite a bit of time, while upsampling of audio that results in a simple rate conversion is relatively newer. The figure below shows an example of oversampling.
Upsampling Audio – Importance and Methods in Audio Mixing ...
https://www.audiorecording.me/upsampling-audio-importance-and-methods-in-audio-mixingmastering.html
Upsampling is increasing the resolution & sample rate of the original digital audio. Some audio professionals call this “over sampling” although I prefer to call it up-sampling. For example, if the original audio is 16 bit/44.1Khz.
Upsampling or Oversampling? | Stereophile.com
https://www.stereophile.com/asweseeit/344/index.html
In the years since then, the audio industry has settled on an 8x-oversampling ratio, the 44.1kHz CD data being converted to a 352.8kHz datastream before D/A conversion by such popular chips as the Pacific Microsonics PMD-100. Companies like Theta, Wadia, and Krell have used proprietary filter algorithms, but these, too, oversampled the data.
What is the point of upsampling? | Audio Science Review ...
https://www.audiosciencereview.com/forum/index.php?threads/what-is-the-point-of-upsampling.7329/
Converting a digital (sampled) signal to a continuous analogue waveform requires interpolation to produce the values between sample points. Doing part of this interpolation digitally (upsampling) simplifies the analogue circuitry and gives better results. That's all there is …
Upsampling? | Stereophile.com
https://www.stereophile.com/content/upsampling-1
Upsampling: Take a digital stream that is at one sample-rate and bit-depth and create more slices (higher sample-rate) at a finer bit resolution (more bits = greater bit-depth). This can happen anywhere a designer sees fit to do it. A DAC will automatically adjust to an incoming digital sample-rate/bit-depth up to its internal capability.
ATF upsampling | Cambridge Audio US
https://www.cambridgeaudio.com/usa/en/technology/atf
ATF upsampling. Don't miss a drop of detail. Our unique ATF2 (Adaptive Time Filtering) upsampling technology, developed in conjunction with Anagram Technologies, Switzerland. All incoming audio data such as a CD 16-bit 44.1kHz signal, is upsampled to 24-bit 384kHz using a high-end 32-bit Analog Devices DSP (Digital Signal Processor). "Polynomial Curve Fitting …
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