Pro Tools 101 Certification Exam Questions
and Answers with Complete Rationales |
Verified | A+ Guide
• Audio -✓✓Sound, especially when recorded, transmitted or reproduced
• MIDI -✓✓Musical Instrument Digital Interface
• Mixing -✓✓The process of blending all the individual tracks in a
recording to create a version of the song that sounds as good as possible
• Post Production -✓✓Work done on a recording after a recording has
taken place
• TDM -✓✓Time Division Multiplexing - routes multiple streams of
digital audio data between system components
• Host-based audio processing -✓✓Processing done on the computer's
CPU without the need for additional DSP cards. Computer's processing
ability.
• D-Control Work Surface -✓✓Up to 80 faders
• D-Command Work Surface -✓✓Up to 40 faders
• Sound -✓✓A variation in the air pressure around us. The result of
changes caused by vibrations that create disturbances in the air or water
around the source.
• Waveform -✓✓The "shape" of the sound or the shape of the vibration
that produced the sound
,• Range of human hearing -✓✓20Hz to 20,000Hz
• Frequency -✓✓How often the sound pressure variates. Measured in
Hertz or CPS (cycles per second). Creates our perception of pitch.
Measurement of the regularly repeating sine wave. Measured from peak
to peak. The number of times a sound wave repeats itself in one second,
moving from the midpoint of the waveform where the sound begins
through the crest of the wave, where the pressure is greatest, through the
midpoint again, to the trough of the wave, where the pressure is the
lightest, and back to the midpoint.
• Amplitude -✓✓Intensity of the sound pressure variations. Creates our
perception of the loudness of the sound. Measured in decibels (dB). The
measurement of how far vibration of molecules of air travels; the
distance traveled from the mid point. measured on the vertical plane of
the sine wave. Translated as volume or loudness.
• Decibel -✓✓A logarithmic unit that is used to describe a ratio of sound
pressure. Measure for amplitude. One-tenth of a Bel. (Alexander
Graham Bell measurement)
• Threshold of hearing -✓✓0dB
• Threshold of pain -✓✓120dB
• Analog Audio -✓✓The continuous electric signal produced by a
microphone is an alternating current with a waveform, frequency and
amplitude that directly corresponds to or is analogous to the original
acoustic information.
• Analog-to-digital conversion (A/D Conversion) -✓✓The process of
translating electrical signals to binary data.
, Two essential factors: sample rate and bit depth
• Sampling -✓✓The process of taking discrete measurements of an
electrical signal at various moments in time.
• The Nyquist Theorem -✓✓In order to produce an accurate
representation of a given frequency of sound, each cycle of the sound's
vibration must be sampled a minimum of two times. Sampling rate of at
least 40kHz is required to capture full-frequency audio.
• Alias tones -✓✓The false tones produced by low sample rates
• Standard sample rate of an audio CD -✓✓44.1kHz
• Quantization -✓✓The process that captures the relative amplitude of a
sample. Each sample's measurement is rounded to the closest available
whole-number value.
• Bits -✓✓Binary digits (0s or 1s) used by computers to represent each
sample measurement that is collected.
• Binary Word Length -✓✓The number of bits used for each sample
• S/PIF -✓✓Digital connection that uses RCA jacks (coaxial jacks).
Stands for Sony/Philips Digital Interface
• AES/EBU -✓✓Digital connection that uses XLR-type connectors.
Stands for Audio Engineering Society/European Broadcast Union
• DSP -✓✓Digital signal processing
and Answers with Complete Rationales |
Verified | A+ Guide
• Audio -✓✓Sound, especially when recorded, transmitted or reproduced
• MIDI -✓✓Musical Instrument Digital Interface
• Mixing -✓✓The process of blending all the individual tracks in a
recording to create a version of the song that sounds as good as possible
• Post Production -✓✓Work done on a recording after a recording has
taken place
• TDM -✓✓Time Division Multiplexing - routes multiple streams of
digital audio data between system components
• Host-based audio processing -✓✓Processing done on the computer's
CPU without the need for additional DSP cards. Computer's processing
ability.
• D-Control Work Surface -✓✓Up to 80 faders
• D-Command Work Surface -✓✓Up to 40 faders
• Sound -✓✓A variation in the air pressure around us. The result of
changes caused by vibrations that create disturbances in the air or water
around the source.
• Waveform -✓✓The "shape" of the sound or the shape of the vibration
that produced the sound
,• Range of human hearing -✓✓20Hz to 20,000Hz
• Frequency -✓✓How often the sound pressure variates. Measured in
Hertz or CPS (cycles per second). Creates our perception of pitch.
Measurement of the regularly repeating sine wave. Measured from peak
to peak. The number of times a sound wave repeats itself in one second,
moving from the midpoint of the waveform where the sound begins
through the crest of the wave, where the pressure is greatest, through the
midpoint again, to the trough of the wave, where the pressure is the
lightest, and back to the midpoint.
• Amplitude -✓✓Intensity of the sound pressure variations. Creates our
perception of the loudness of the sound. Measured in decibels (dB). The
measurement of how far vibration of molecules of air travels; the
distance traveled from the mid point. measured on the vertical plane of
the sine wave. Translated as volume or loudness.
• Decibel -✓✓A logarithmic unit that is used to describe a ratio of sound
pressure. Measure for amplitude. One-tenth of a Bel. (Alexander
Graham Bell measurement)
• Threshold of hearing -✓✓0dB
• Threshold of pain -✓✓120dB
• Analog Audio -✓✓The continuous electric signal produced by a
microphone is an alternating current with a waveform, frequency and
amplitude that directly corresponds to or is analogous to the original
acoustic information.
• Analog-to-digital conversion (A/D Conversion) -✓✓The process of
translating electrical signals to binary data.
, Two essential factors: sample rate and bit depth
• Sampling -✓✓The process of taking discrete measurements of an
electrical signal at various moments in time.
• The Nyquist Theorem -✓✓In order to produce an accurate
representation of a given frequency of sound, each cycle of the sound's
vibration must be sampled a minimum of two times. Sampling rate of at
least 40kHz is required to capture full-frequency audio.
• Alias tones -✓✓The false tones produced by low sample rates
• Standard sample rate of an audio CD -✓✓44.1kHz
• Quantization -✓✓The process that captures the relative amplitude of a
sample. Each sample's measurement is rounded to the closest available
whole-number value.
• Bits -✓✓Binary digits (0s or 1s) used by computers to represent each
sample measurement that is collected.
• Binary Word Length -✓✓The number of bits used for each sample
• S/PIF -✓✓Digital connection that uses RCA jacks (coaxial jacks).
Stands for Sony/Philips Digital Interface
• AES/EBU -✓✓Digital connection that uses XLR-type connectors.
Stands for Audio Engineering Society/European Broadcast Union
• DSP -✓✓Digital signal processing
