POW-R is a wordlength reduction (dithering / noiseshaping) method, to reduce e.g. a 24 bit digital audio signal to e.g. a 16 bit wordlength without introducing any quantization distortions. The Weiss pow-r unit includes the standard set of three algorithms which make up the pow-r scheme, plus in addition offers flat TPDF dithering. The pow-r unit is available in two versions, a two channel and a four channel version.
Features are: 24 bit single wire high-speed AES/EBU interfaces input wordlength indication PLL locked indication bypass switch dither type selection (pow-r#1, pow-r#2, pow-r#3, flat TPDF) 20 / 16 / 8 (for testing) bit output wordlength selectable auto-blacking for dither noise 40bit floating point / 32bit fixed point processing 44.1 / 48 / 88.2 / 96kHz sampling frequencies supported standalone 1hu 19" rackmount chassis History of Pow-r
An innovative new technique for digital audio Word Length Reduction (WLR) is now available from the Pow-r Consortium, LLC. Some of the world's finest digital audio designers have come together as a team to create what is being hailed as the audio industry's most transparent and musically accurate method of reducing digital word lengths.
Pow-r, an acronym for Psychoacoustically Optimized Wordlength Reduction, is a unique, patent-applied-for algorithm, which reduces longer word lengths (20, 24, even up to 32 bits), to CD standard 16-bit format while retaining a high degree of perceived dynamic efficiency and very low noise. Pow-r is ready for all sample rates from 44.1kHz to 192 kHz, and beyond.
Pow-r is compact and designed for portability. The algorithm will operate optimally in both DSP and native software in digital audio workstation applications. Pow-r constists of three diferent algorithms, two beeing noiseshaping and one based on narrow-band Nyquist dither. Pow-r is free from artifacts present in other popular Nyquist-band or noiseshaping WLR techniques, such as "birdies" and "motorboating." With Pow-r, archaic look up tables are avoided and all audio program is decorrelated from Nyquist-band dither.
POW-R Technical Data: AES/EBU Input: Sampling Frequencies: 44.1 kHz, 48.0 kHz, 88.2 kHz, 96kHz Maximum Input Wordlength: 24 Bits Channel Status Data: Input accepts professional or consumer format. Channel Status Bits forwarded to AES/EBU output: all Connector: XLR female
AES/EBU Output: Sampling Frequencies: 44.1 kHz, 48.0 kHz, 88.2 kHz, 96kHz Output Wordlength: 24 Bits, 20 Bits, 16 Bits or 8 Bits Connector: XLR male
Power: Mains Voltage: 110 / 220 Volts with voltage selector Fuse rating: 500 mA slow blow Power Consumption: 40VA max
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