POW-R (Psychoacoustically Optimized Wordlength Reduction) is a dithering algorithm developed by the consortium of Lake Technology (Dolby Labs), Weiss Engineering, Millennia Media and Z-Systems. Dither is an intentionally applied form of Noise, used to randomize Quantization error, thereby preventing large-scale patterns such as contouring that are more objectionable In Mathematics, Computing, Linguistics and related subjects an algorithm is a sequence of finite instructions often used for Calculation A consortium is an association of two or more individuals companies organizations or governments (or any combination of these entities with the objective of participating This mathematical algorithm reduces longer digital audio word lengths (20, 24, 32 bits) to industry standard CD-quality 16 bits while retaining a high degree of perceived dynamic efficiency and very low noise. POW-R is a scalable algorithm, meaning it is dynamically optimized and ready for all sample rates from 16 kHz to 192 kHz, or higher.
POW-R is compact and designed for portability. The algorithms operate optimally in both DSP and native software in digital audio workstation applications. A digital audio workstation (DAW is an electronic system designed to record, edit and play back digital audio POW-R is technically not noise shaping. Rather, the original POW-R algorithm is based on narrow-band Nyquist dither and is free from artifacts, such as "birdies" and "motorboating", present in other Nyquist-band WLR techniques. With POW-R, look-up tables are avoided and all audio program is dynamically decorrelated from Nyquist-band dither. To better target all audio sources, non-narrow-band techniques are also offered in the POW-R algorithm set.
POW-R algorithms
POW-R users are offered a choice of two or three POW-R algorithms from which to select:
- POW-R #1: optimized for simple program of average dynamic range, such as spoken word.
- POW-R #2: optimized for low dynamic range program, such as rock music.
- POW-R #3: optimized for complex, high dynamic range program, such as orchestral music.
The POW-R Consortium, LLC is an autonomous, non-competitive entity established for the sole purpose of maintaining and supporting the POW-R Algorithms. POW-R is a registered trademark of the POW-R Consortium, LLC (John La Grou, Chairman). POW-R is licensed to Apple Computer, Avid-Digidesign, SADiE, Sonic Studio, BIAS, Cakewalk Sonar, Merging Technologies, Ableton, Magix / Sequoia / Samplitude, and others. Apple Inc, ( formerly Apple Computer Inc, is an American Multinational corporation with a focus on designing and manufacturing Consumer electronics Digidesign is an American Digital audio technology company It was founded in 1984 by Peter Gotcher and Evan Brooks Cakewalk is a company based in Boston Massachusetts that develops music production Software.
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Similar to Dither, noise shaping is a bit reduction technique used to minimize the impact of Quantization errors Noise shaping is used in many areas of DigitalDapyx Software network: MP3 Explorer | Ebook Manager | Zenithic