Sound
recording and reproduction are two separate processes used to record, store,
and play back sounds. Sound recording uses microphones to pick up sound waves
in the air. The pressure changes associated with the waves are converted into
electrical signals, which can be coded and stored for future access. Sound
reproduction, or playback, uses additional devices to retrieve the stored
information and convert it back into electrical signals. The signals are then
sent to a loudspeaker, which converts them back into sound.
To record
sound, a microphone changes the acoustic energy of sound waves in the air into
electrical signals.
Inside a
microphone is a thin, flat, metallic surface, called a diaphragm, that is
suspended in a magnetic field. When a sound wave reaches the microphone, the
air pressure changes around the diaphragm, causing the diaphragm to move. This
movement within a magnetic field creates an electrical signal. The signal is
then transferred to a storage medium, such as a cassette tape, a compact disc
(CD), or a phonograph record.
To reproduce
sound, a playing device—such as a CD player, cassette deck, or
phonograph—accesses the stored data. The playing device reads the data and
converts the information back into electric energy. The electrical signal is
sent to a loudspeaker, which has a diaphragm housed in a magnetic field in much
the same way as a microphone's diaphragm is housed. The electrical signal
creates a disturbance in the magnetic field. These resultant variations in the
magnetic field cause the diaphragm to move. As the diaphragm moves, it pushes
out and pulls in, creating changes in air pressure to recreate the sound that
was originally recorded.
Sound
recording and reproduction form the foundation of many industries, including
entertainment, communications, and multimedia businesses. Recording and
reproduction of sound allow people to play their favorite music, whether it was
recorded yesterday or many years ago. Radio networks rely on sound recording
and reproduction for storing news and other types of programming. Television
and motion pictures combine images with music, speech, and sound effects to
provide the viewer with an enriched experience. Computer programs, multimedia
software, and video games also use sound to make programs more engaging
1. what is a
recording?
2. the first
stage of a sound recording is...
3. how many
stages are there in a sound recording process?
what are
they?
4. what is
reproduction?
5. how many
stages are there in a reproduction process? what are they?
6. which of
these is the purpose of the text?
a. to describe the way thing are.
b. to explain the processes involved in the
formation or working of sociocultural phenomena
7. how many
action verbs are there used in the text? what are they
8. are there
any abstract words used in the text? what are they?
9. how many
sentences are written in passive form? write them here
10. how many
rechnical languages are there in the text? write them here
11. are there
any conjunctions used in the text?
12. is there
any complex sentence? write them here
13. is the
text written in the present tense? why?
recording and reproduction are two separate processes used to record, store,
and play back sounds. Sound recording uses microphones to pick up sound waves
in the air. The pressure changes associated with the waves are converted into
electrical signals, which can be coded and stored for future access. Sound
reproduction, or playback, uses additional devices to retrieve the stored
information and convert it back into electrical signals. The signals are then
sent to a loudspeaker, which converts them back into sound.
To record
sound, a microphone changes the acoustic energy of sound waves in the air into
electrical signals.
Inside a
microphone is a thin, flat, metallic surface, called a diaphragm, that is
suspended in a magnetic field. When a sound wave reaches the microphone, the
air pressure changes around the diaphragm, causing the diaphragm to move. This
movement within a magnetic field creates an electrical signal. The signal is
then transferred to a storage medium, such as a cassette tape, a compact disc
(CD), or a phonograph record.
To reproduce
sound, a playing device—such as a CD player, cassette deck, or
phonograph—accesses the stored data. The playing device reads the data and
converts the information back into electric energy. The electrical signal is
sent to a loudspeaker, which has a diaphragm housed in a magnetic field in much
the same way as a microphone's diaphragm is housed. The electrical signal
creates a disturbance in the magnetic field. These resultant variations in the
magnetic field cause the diaphragm to move. As the diaphragm moves, it pushes
out and pulls in, creating changes in air pressure to recreate the sound that
was originally recorded.
Sound
recording and reproduction form the foundation of many industries, including
entertainment, communications, and multimedia businesses. Recording and
reproduction of sound allow people to play their favorite music, whether it was
recorded yesterday or many years ago. Radio networks rely on sound recording
and reproduction for storing news and other types of programming. Television
and motion pictures combine images with music, speech, and sound effects to
provide the viewer with an enriched experience. Computer programs, multimedia
software, and video games also use sound to make programs more engaging
1. what is a
recording?
2. the first
stage of a sound recording is...
3. how many
stages are there in a sound recording process?
what are
they?
4. what is
reproduction?
5. how many
stages are there in a reproduction process? what are they?
6. which of
these is the purpose of the text?
a. to describe the way thing are.
b. to explain the processes involved in the
formation or working of sociocultural phenomena
7. how many
action verbs are there used in the text? what are they
8. are there
any abstract words used in the text? what are they?
9. how many
sentences are written in passive form? write them here
10. how many
rechnical languages are there in the text? write them here
11. are there
any conjunctions used in the text?
12. is there
any complex sentence? write them here
13. is the
text written in the present tense? why?
1. to use sound recordings for educational purposes without violatingthe Digital Millennium Copyright Act (DMCA)193
2. to enable archives to share copies of digitized sound recordingsamong themselves for the purpose of eliminating redundantefforts to preserve commercial recordings held in many institutionsor existing in multiple copies, and, in so doing, assure thatas many legacy recordings as possible can be saved and be madepublicly accessible in digital formats
3. to harmonize the term of protection for sound recordings withthat of other intellectual property formats, and to explore possiblebenefits of harmonizing U.S. and European terms of protection
4. to foster better methods of identifying rights holders for proposeduses of sound recordings that require prior authorizationfrom rights holders
5. to make out-of-print and/or orphan recordings available to thepublic over the Internet
6. to permit making copies of recordings before their sound qualityhas deteriorated
7. to clarify the legal definition of “obsolete” media to allow applicationof routine archival best-practice standards to preservationreformatting of legacy analog media; and8. to extend fair-use provisions to pre-1972 recordings as nationalpolicy.