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Smaart is a software suite of audio and acoustic measurement tools, a software application for the analysis portion of acoustical measurements and instrumentation. Introduced in 1996 by JBL's pro audio division, it was designed to help the live sound engineer optimize the linearity of sound reinforcement systems ''during'' the public performance unlike most earlier analysis systems which required specific test signals sent to the sound system, ones which would be unpleasant for the audience to hear. It was also intended to assist audio engineers in analyzing the output of loudspeakers, audio amplifiers and other audio gear, as well as helping the acoustician analyze room acoustics. The software product has been known as JBL-Smaart, SIA-Smaart Pro, EAW Smaart, SmaartLive, and simply Smaart, while the acoustician version has been offered as Smaart Acoustic Tools. ''Smaart'' is an acronym which stands for Sound Measurement Acoustical Analysis Real Time tool. Smaart has three modes: transfer function, real-time analyzer (RTA) and impulse response. The first two modes use dual- and single-fast Fourier transform (FFT), and the impulse response mode uses either FFT or maximum length sequence (MLS) analysis. Smaart has been licensed and owned by several companies since JBL, and is now owned and developed by Rational Acoustics. First written as a native Windows 3.1 application to work within Windows 95 on IBM-compatible computers, in 2006 a version was introduced that was compatible on both Windows and Apple Macintosh operating systems. In 2011 Smaart was in its 7th version.〔 ==Use== Smaart is based on real-time fast Fourier transform (FFT) analysis, including dual-FFT audio signal comparison, called "transfer function", and single-FFT spectrum analyzer. It includes maximum length sequence (MLS) analysis as a choice for impulse response, for the measurement of room acoustics. The FFT implementation of Smaart is a multi-time window (MTW) solution in which the FFT, rather than being a fixed length, is made increasingly shorter as the frequency increases. This feature allows the software to 'ignore' later signal reflections from walls and other surfaces, increasing in coherence as the audio frequency increases.〔 The latest version of Smaart 7 runs under Windows 8 (including 8.1), Windows 7, Vista, or XP, and under Mac OS X 10.5 - 10.9 . A computer having a dual-core processor with a clock rate of at least 2 GHz is recommended. Smaart can be set to sample rates of 44.1 kHz, 48 kHz or 96 kHz, and to bit depths of 16 or 24. The software works with computer audio protocols ASIO, Core Audio, WAV or WDM audio drivers. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Smaart」の詳細全文を読む スポンサード リンク
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