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SDR
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== Science and technology == * [[ETSI Satellite Digital Radio]] * [[Selective dorsal rhizotomy]], a neurosurgery * [[Short-chain dehydrogenase]], short-chain dehydrogenases/reductases family, SDR family * Single data rate, in [[synchronous dynamic random-access memory]] (SDRAM) * [[SmartDraw]] image file format, with file extension <code>.sdr</code> * [[Software-defined radio]], enabling computers to tune a wide spectrum of radio frequencies, using software instead of hardware for modulation and demodulation * Sony Dream Robot, later dubbed [[QRIO]] * [[Sparse distributed representation]], in machine intelligence * [[Standard dimension ratio]] in pipe engineering * [[Standard-dynamic-range video]], color clarity and realism in images and videos, the current standard for video and cinema displays * Super dynamic range, [[SDR (audio)]] or XDR, an encoding system for audio cassettes * [[System of distinct representatives]], in mathematics
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