Homework 3
... α of 10 cm-1. For uncoated facets, the reflectivity at each end R is 0.32. (a) What is the optical gain at threshold? (b) If the reflectivity at once face is increased to 90%, what does the gain at threshold become? (With two different reflectivities, the factor R2 becomes R1R2). A diode laser emitt ...
... α of 10 cm-1. For uncoated facets, the reflectivity at each end R is 0.32. (a) What is the optical gain at threshold? (b) If the reflectivity at once face is increased to 90%, what does the gain at threshold become? (With two different reflectivities, the factor R2 becomes R1R2). A diode laser emitt ...
Early Born-Digital Audio Formats
... 3. Experienced operators - many apparently catastrophic playback problems are due to simple, easily corrected causes 4. Marriage to video carriers mean you get all of video’s problems too - drop outs (drop out compensation makes matters worse) - time base errors (slow tape speed vs. high frequency) ...
... 3. Experienced operators - many apparently catastrophic playback problems are due to simple, easily corrected causes 4. Marriage to video carriers mean you get all of video’s problems too - drop outs (drop out compensation makes matters worse) - time base errors (slow tape speed vs. high frequency) ...
Slide 1
... having wavelength 400 nm to 700 nm that is incident upon the retina. “Power distribution exists in the physical world, but color exists only in the eye and the brain.” Does “red” mean the same to different people? ...
... having wavelength 400 nm to 700 nm that is incident upon the retina. “Power distribution exists in the physical world, but color exists only in the eye and the brain.” Does “red” mean the same to different people? ...
KEY TERMS.doc
... point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected. RESOLUTION : Refers to the sharpness and clarity of an image. The term is mos ...
... point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected. RESOLUTION : Refers to the sharpness and clarity of an image. The term is mos ...
Save for Web - Heidi Sandecki
... Gif files have the advantage of allowing the background of graphic elements to maintain transparency. The Matte feature overrides this feature by giving you the option to specify a fill color for pixels that were transparent in the original image. To use, click the Matte color swatch to select a col ...
... Gif files have the advantage of allowing the background of graphic elements to maintain transparency. The Matte feature overrides this feature by giving you the option to specify a fill color for pixels that were transparent in the original image. To use, click the Matte color swatch to select a col ...
Communicating Quantitative Information
... • So… purple hat image is compressed (encoded) to take advantage of similar line sections of color. The gif format does this. ...
... • So… purple hat image is compressed (encoded) to take advantage of similar line sections of color. The gif format does this. ...
THE EXPANDING PROBLEM OF HIGH FREQUENCY NOISE
... The ANSI/IEEE C62.41 description above sheds revealing light on conducted electrical noise problems. For the purpose of this manuscript, conducted high frequency noise will be defined as follows: Conducted high frequency noise is any signal of greater than 1000 times the fundamental power frequency ...
... The ANSI/IEEE C62.41 description above sheds revealing light on conducted electrical noise problems. For the purpose of this manuscript, conducted high frequency noise will be defined as follows: Conducted high frequency noise is any signal of greater than 1000 times the fundamental power frequency ...
Pulse Width Modulation
... The amplitude and frequency of the dither must be carefully chosen. The amplitude must be large enough and the frequency slow enough that the spool will respond, yet they must also be small and fast enough not to result in a pulsating output. The optimum dither must be chosen such that the problems ...
... The amplitude and frequency of the dither must be carefully chosen. The amplitude must be large enough and the frequency slow enough that the spool will respond, yet they must also be small and fast enough not to result in a pulsating output. The optimum dither must be chosen such that the problems ...
Input-referred noise improves A/D converter resolution
... cases, less input noise is better. There are some cases, however, where input noise can actually be helpful in achieving higher resolution. In precision, low-frequency measurement applications, the effects of this noise can be reduced by digitally averaging the ADC output data, using lower sampling ...
... cases, less input noise is better. There are some cases, however, where input noise can actually be helpful in achieving higher resolution. In precision, low-frequency measurement applications, the effects of this noise can be reduced by digitally averaging the ADC output data, using lower sampling ...
Lecture 7
... Ability to process signal at the source and destination DSP PCM is the most common technique used today in Digital Communications for representing an analog signal by a digital word. PCM is a technique for converting analog signals into a digital representation ...
... Ability to process signal at the source and destination DSP PCM is the most common technique used today in Digital Communications for representing an analog signal by a digital word. PCM is a technique for converting analog signals into a digital representation ...
Wireless communication
... The federal communication commission (FCC) can use this process to monitor frequencies, because there is a designated broadcasting frequency, so the FCC can see if someone is broadcasting out of the designated frequency. ...
... The federal communication commission (FCC) can use this process to monitor frequencies, because there is a designated broadcasting frequency, so the FCC can see if someone is broadcasting out of the designated frequency. ...
Sigma Delta A/D converters
... • Theory and math applicable exactly: quantization error is replaced by truncation error • Interpolation filter instead of sampler to raise sample rate • Analog part: A 1 bit D/A followed by one or more filters – Harder to build than A/D counterparts (!!) (analog part has no feedback loop to take ad ...
... • Theory and math applicable exactly: quantization error is replaced by truncation error • Interpolation filter instead of sampler to raise sample rate • Analog part: A 1 bit D/A followed by one or more filters – Harder to build than A/D counterparts (!!) (analog part has no feedback loop to take ad ...
Joint Non-Gaussian Denoising and Superresolving of Raw High
... spatiotemporal priors of high quality videos and signal-dependent noise. Mathematically, we align the frames along temporal axis and pursue the solution under the following three criterion: 1) the sharp noisefree image stack is low rank with some missing pixels denoting occlusions; 2) the noise foll ...
... spatiotemporal priors of high quality videos and signal-dependent noise. Mathematically, we align the frames along temporal axis and pursue the solution under the following three criterion: 1) the sharp noisefree image stack is low rank with some missing pixels denoting occlusions; 2) the noise foll ...
Figure 1–1 Communication system.
... • Filtering noise (low pass filtering at decoder) Types of Quantization Noise • Overload noise (input too large) • Random noise (input too small) • Granular noise (non uniform error jump) • Hunting noise (too long of quite time) ...
... • Filtering noise (low pass filtering at decoder) Types of Quantization Noise • Overload noise (input too large) • Random noise (input too small) • Granular noise (non uniform error jump) • Hunting noise (too long of quite time) ...
Dither - Spontaneous Materials
... do. Like the deer caught in the headlights of an approaching automobile, there is a tendency to freeze or do nothing at all, until a suitable course of action is clear or it is too late. Sometimes it is exactly the right thing to do. Other times, dithering is disastrous. Example One Strapped with po ...
... do. Like the deer caught in the headlights of an approaching automobile, there is a tendency to freeze or do nothing at all, until a suitable course of action is clear or it is too late. Sometimes it is exactly the right thing to do. Other times, dithering is disastrous. Example One Strapped with po ...
Dither
Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and video data, and is often one of the last stages of ""mastering"" audio to a CD.A typical use of dither is converting a greyscale image to black and white, such that the density of black dots in the new image approximates the average grey level in the original.