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Voice Activated Recorders
In digital recording, an audio signal, audio or video signal is converted into a stream of discrete numbers representing the changes over time in air pressure for audio, or Color, chroma and luminance values for video. This number stream is saved to a storage device. To play back a digital recording, the numbers are retrieved and converted back into their original analog signal, analog audio or video forms so that they can be heard or seen. In a properly matched analog-to-digital converter (ADC) and digital-to-analog converter (DAC) pair the analog signal is accurately reconstructed per the constraints of the Nyquist–Shannon sampling theorem dependent on the sampling rate and quantization error dependent on the Audio bit depth, audio or Bit depth (computer graphics), video bit depth. Because the signal is stored digitally, assuming proper error detection and correction, the recording is not degraded by copying, storage or interference. Timeline *October 3, 1938: British t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoom H4n Audio Recording Levels
Zoom may refer to: Technology Computing * Zoom (software), videoconferencing application * Page zooming, the ability to magnify or shrink a portion of a page on a computer display * Zooming user interface, a graphical interface allowing for image scaling * Digital zoom, an electronic emulation of a zoom lens Optics * Zoom ratio, the maximum relative to the minimum magnification factor of an optical system * Zoom lens, a lens system with a variable focal length, and hence variable magnification and angle of view * Zooming (filmmaking), a cinematographic effect Companies * Zoomcar, a carsharing company in India * Zoom (video game company), a Japanese video-game company * Zoom Airlines Inc., a former Canadian airline ** Zoom Airlines Limited, its former British sister company * Zoom Corporation, a Japanese audio company * ZOOM Erlebniswelt Gelsenkirchen, a zoological park in Gelsenkirchen, Germany * ZoomInfo (formerly Zoom Information), an American software company * Zoom Systems, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
