Sony pcm 800 manual4/6/2023 ![]() ![]() Most video-based PCM adaptors record audio at 14 or 16 bits per sample, with a sampling frequency of 44.1 kHz for PAL or monochrome NTSC, or 44.056 kHz for color NTSC. ![]() A PCM adaptor performs an analog-to-digital conversion producing series of binary digits, which, in turn, is coded and modulated into a black and white video signal, appearing as a vibrating checkerboard pattern, which can then be recorded as a video signal. Such an audio recording system includes two devices: the PCM adaptor, which converts audio into pseudo-video, and the videocassette recorder. One solution arrived at in the early 1980s was to use a videotape recorder, which is capable of recording signals with higher bandwidths.Ī means of converting digital audio into a video format was necessary. A standard analog audio recorder cannot meet this requirement. For example, a 16-bit PCM signal requires an analog bandwidth of about 1-1.5 MHz compared to about 15-20 kHz of analog bandwidth required for an analog audio signal. High-quality pulse-code modulation (PCM) audio requires a significantly larger bandwidth than a regular analog audio signal. This digital audio system was used for mastering early compact discs. The adapter also has the ability to decode a video signal back to digital audio for playback. A PCM adaptor is a device that encodes digital audio as video for recording on a videocassette recorder. ![]()
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