Resource Center: How to Speak A/V
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Entries starting with: Q: In an equalizer, Q specifies the width of the frequency band relative to its level; the higher the Q, the narrower the band. QoS (Quality of Service): A technique for identifying and prioritizing data to provide improved streaming of multimedia content like music and video. quantization: In digital audio, the representation of a continuous analog signal by a sequence of discrete numbers. In PCM, the dynamic range of the system is determined by the number of possible values available to represent various levels of signal amplitude, which is in turn determined by the number of bits used to represent each sample. In the CD data format, the resolution of the quantization is 16 bits. quantization noise: A form of distortion unique to digital signals, it is the difference between a quantized signal (which can only take certain discrete numerical or voltage values) and the original analog signal. quartz: A form of crystalline silicon dioxide that can be used to construct very stable radio-frequency (RF) oscillators and clocks. quartz synthesis: see frequency synthesis, PLL. |
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