preemphasis การใช้

• The Dolby preemphasis boosts the recorded level of the quieter VU ), no signal modification is performed.
• This distortion may be equalized out with the use of preemphasis filtering ( increase amplitude of high frequency signal ).
• This is achieved by bypassing the highpass, lowpass, preemphasis, and deemphasis filters normally contained in the microphone and speaker circuits.
• The primary audio signal is modulated by Frequency modulation with a preemphasis "'time constant "'of ? = 50 ?s.
• Examples of mitigation techniques for these impairments are a redesign of the via geometry to ensure an impedance match, use of differential signaling, and preemphasis filtering, respectively.
• Dolby noise reduction is a form of dynamic preemphasis employed during recording, plus a form of dynamic deemphasis used during playback, that work in tandem to improve the signal-to-noise ratio.
• During the next five years, the company developed important BERTScope products with integrated stressed-eye and physical-layer testing capability, and introduced innovative accessory products including the Digital Preemphasis Processor and Clock Recovery that led the market.