COMPAND Meaning and
Definition
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Compand is a term derived from the combination of the words "compress" and "expand." It refers to a process used in telecommunications and audio engineering to reduce the dynamic range of a signal during transmission or recording and subsequently restore it upon reception or playback. The purpose of companding is to optimize the signal-to-noise ratio and improve the overall quality and intelligibility of the transmitted or recorded audio.
In practice, companding involves two main stages: compression and expansion. During compression, the amplitude of the audio signal is reduced in a non-linear manner, generally through the use of logarithmic functions. This process is designed to attenuate the stronger parts of the signal while preserving the weaker elements. The compressed signal is then transmitted or recorded.
During expansion, the previously compressed signal is received or played back and undergoes an inverse operation. The amplitude of the signal is expanded or amplified according to a complementary non-linear curve, effectively restoring the original dynamic range. The purpose is to enhance the weaker portions of the signal and restore a more balanced audio output.
Companding is particularly beneficial when transmitting or recording audio signals with a wide dynamic range, such as in radio broadcasting and music production. By reducing the difference between the softest and loudest parts of the signal, companding prevents distortion and minimizes the impact of background noise, resulting in clearer and higher-quality audio reproduction.
Etymology of COMPAND
The word "compand" is a combination of two terms, "comp" and "and". It is used in the field of telecommunications to describe a process commonly known as "compress and expand".
The term "compress" refers to the concept of reducing the dynamic range of a signal, which involves decreasing the difference between the loudest and softest parts of the signal. This process is utilized in audio and video compression techniques to minimize the file size or transmission bandwidth without sacrificing too much quality.
The term "expand" is the opposite of compress, meaning to restore or reverse the compression process. It involves increasing the dynamic range of a signal, augmenting the difference between the quietest and loudest parts.
In telecommunications, companding (compressing and expanding) is often used to efficiently transmit and store signals, especially in situations where reducing the dynamic range can be beneficial, such as in long-distance transmission or when dealing with limited bandwidth.
Conjugate verb Compand
CONDITIONAL
I
would compand
you
would compand
he/she/it
would compand
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would compand
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would compand
CONDITIONAL CONTINUOUS
I
would be companding
you
would be companding
he/she/it
would be companding
we
would be companding
they
would be companding
CONDITIONAL PERFECT
I
would have compand
you
would have compand
he/she/it
would have compand
we
would have compand
they
would have compand
CONDITIONAL PERFECT CONTINUOUS
I
would have been companding
you
would have been companding
he/she/it
would have been companding
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would have been companding
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would have been companding
FUTURE
I
will compand
you
will compand
he/she/it
will compand
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will compand
they
will compand
FUTURE CONTINUOUS
I
will be companding
you
will be companding
he/she/it
will be companding
we
will be companding
they
will be companding
FUTURE PERFECT
I
will have companded
you
will have companded
he/she/it
will have companded
we
will have companded
they
will have companded
FUTURE PERFECT CONTINUOUS
I
will have been companding
you
will have been companding
he/she/it
will have been companding
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will have been companding
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will have been companding
IMPERATIVE
you
compand
we
let´s compand
to compand
PAST
I
companded
you
companded
he/she/it
companded
we
companded
they
companded
PAST CONTINUOUS
I
was companding
you
were companding
he/she/it
was companding
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were companding
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were companding
PAST PARTICIPLE
companded
PAST PERFECT
I
had companded
you
had companded
he/she/it
had companded
we
had companded
they
had companded
PAST PERFECT CONTINUOUS
I
had been companding
you
had been companding
he/she/it
had been companding
we
had been companding
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had been companding
PRESENT
I
compand
you
compand
he/she/it
compands
we
compand
they
compand
PRESENT CONTINUOUS
I
am companding
you
are companding
he/she/it
is companding
we
are companding
they
are companding
PRESENT PARTICIPLE
companding
PRESENT PERFECT
I
have companded
you
have companded
he/she/it
has companded
we
have companded
they
have companded
PRESENT PERFECT CONTINUOUS
I
have been companding
you
have been companding
he/she/it
has been companding
we
have been companding
they
have been companding
