Index: > A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home > Equivalent pulse code modulation noise

In telecommunication, equivalent pulse code modulation noise (PCM) is the amount of thermal noise power on a frequency-division multiplexed (FDM) or wire channel necessary to approximate the same judgment of speech quality created by quantizing noise in a PCM channel.

Note 1: The speech quality judgment is based on comparative tests.

Note 2: Generally, 33.5 dBrnC ±2.5 dB is considered the approximate equivalent PCM noise of a 7- bit PCM system.

Source: from Federal Standard 1037C and from MIL-STD-188

Politics	Business	Finance

Topics: Equivalent Pulse Code Modulation Noise Pcm Approximate Quality...

Equivalent noise resistanceIn telecommunication, an equivalent noise resistance is a quantitative representation in resistance units of the spectral density of a noise- voltage generator, given by where is the spectral density, is the Boltzmann's constant, is the standard noise tem	Equivalent pulse code modulation noiseIn telecommunication, equivalent pulse code modulation noise (PCM) is the amount of thermal noise power on a frequency-division multiplexed (FDM) or wire channel necessary to approximate the same judgment of speech quality created by quantizing noise in a	Equivalent rectangular bandwidthThe equivalent rectangular bandwidth or ERB is a measure used in psychoacoustics. Researchers have derived a differential equation giving the ERB value in Hz of a human auditory filter with a center frequency of kHz : Solving this equation gives roughly t
Equivalent potential temperatureEquivalent potential temperature is commonly referred to as Theta-e . Theta-e is the temperature of one parcel of air after it was lifted until it became saturated with water vapor, then all the water vapor was condensed out, and finally the parcel is dro	Equivalent averageBaseball statistics Equivalent Average (EQA) is a baseball metric invented by Clay Davenport, and intended to express the production of hitters in a context independent of park and league. It represents a hitter's productivity using the same scale as batt	Equivalent series resistanceEquivalent series resistance (ESR) is a theoretical device designed to accommodate the real-world limitations of electronic components. The theoretical treatment of devices such as capacitors and inductors tends to assume they are ideal or "perfect" devic
Equivalent dose	Equivalent Air Depth	Equivalent (chemistry)
Equivalent circuit	Equivalent airspeed

Non User