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Questions and Answers
What is the term used to describe any sound or noise within the detectable range of the human ear?
What is the term used to describe any sound or noise within the detectable range of the human ear?
- Signal
- Echo
- Audio (correct)
- Noise
What is the human audible frequency range?
What is the human audible frequency range?
- 20Hz to 20kHz (correct)
- 10Hz to 15kHz
- 30Hz to 18kHz
- 50Hz to 25kHz
Which component is crucial for generating audio signals on a computer?
Which component is crucial for generating audio signals on a computer?
- Sound card (correct)
- Amplifier
- Speaker
- Microphone
What commonality do voices, music, and public address messages share?
What commonality do voices, music, and public address messages share?
What phenomena occurs when a loudspeaker vibrates?
What phenomena occurs when a loudspeaker vibrates?
What is the lowest frequency audible to humans?
What is the lowest frequency audible to humans?
In audio design, what fundamental aspect is typically explored?
In audio design, what fundamental aspect is typically explored?
Which of the following statements about digital and analog sound is correct?
Which of the following statements about digital and analog sound is correct?
What unit is used to measure the perceived loudness of sound?
What unit is used to measure the perceived loudness of sound?
Which file format is NOT an audio file type?
Which file format is NOT an audio file type?
What does a higher amplitude in a sound wave indicate?
What does a higher amplitude in a sound wave indicate?
Which unit measures the frequency of sound waves?
Which unit measures the frequency of sound waves?
How is sound frequency perceived in terms of pitch?
How is sound frequency perceived in terms of pitch?
What happens to the waveform when audio is quieter?
What happens to the waveform when audio is quieter?
What does the wavelength refer to in sound waves?
What does the wavelength refer to in sound waves?
What file format is used for a Windows Media Player playlist?
What file format is used for a Windows Media Player playlist?
What are Foley sounds primarily used for in film?
What are Foley sounds primarily used for in film?
Which statement about voice-over in films is true?
Which statement about voice-over in films is true?
Which factor distinguishes audio effects from naturally created sounds?
Which factor distinguishes audio effects from naturally created sounds?
In what type of videos might the narrator be depicted as a character?
In what type of videos might the narrator be depicted as a character?
Why are recording sounds like footsteps beneficial in film?
Why are recording sounds like footsteps beneficial in film?
Which aspect is not a characteristic of Foley sounds?
Which aspect is not a characteristic of Foley sounds?
What does the absence of a visible narrator imply for the audience?
What does the absence of a visible narrator imply for the audience?
What is the primary question to consider when designing a motion design piece with music?
What is the primary question to consider when designing a motion design piece with music?
What is true about the sound of a battle in outer space?
What is true about the sound of a battle in outer space?
Which audio elements are sometimes needed in a motion piece?
Which audio elements are sometimes needed in a motion piece?
What aspect is emphasized as important when mixing audio layers?
What aspect is emphasized as important when mixing audio layers?
What is an important outcome of designing sound for a motion piece?
What is an important outcome of designing sound for a motion piece?
What defines an analog audio signal?
What defines an analog audio signal?
What does digital audio entail?
What does digital audio entail?
In the process of sound reproduction, what eventually follows the original acoustic event in analog audio?
In the process of sound reproduction, what eventually follows the original acoustic event in analog audio?
What is required from students in the individual assignment related to ambience sound?
What is required from students in the individual assignment related to ambience sound?
What is the primary feature that distinguishes stereo audio from mono audio?
What is the primary feature that distinguishes stereo audio from mono audio?
Which audio format is best suited for creating a more immersive experience?
Which audio format is best suited for creating a more immersive experience?
What was the main limitation of the phonautograph created in 1857?
What was the main limitation of the phonautograph created in 1857?
What major advancement did the phonograph achieve over the phonautograph?
What major advancement did the phonograph achieve over the phonautograph?
Which of the following describes the Gramophone?
Which of the following describes the Gramophone?
What change was utilized in the phonograph to create sound playback?
What change was utilized in the phonograph to create sound playback?
What is a limitation of mono audio compared to stereo audio?
What is a limitation of mono audio compared to stereo audio?
Which historical sound recording device was perfected by Thomas Edison?
Which historical sound recording device was perfected by Thomas Edison?
Study Notes
What is Audio?
- Audio is any sound or noise a human ear can hear
- The audio signal is measured in Hertz (Hz)
- The human ear is sensitive to 20Hz (lowest) and 20kHz (highest) frequencies
Sound Unit
- Decibel (dB): a unit of sound measurement
- Sone: a unit of perceived loudness
- Phon: a unit of subjective loudness
- Hertz (Hz): unit of sound frequency
History of Recorded Audio
- Phonautograph (1857): The first device to record sound waves visually, but without playback capabilities.
- Phonograph (1878): Created by Thomas Edison, this device used a cylinder covered with a material that could be etched with a stylus. Playback was achieved by tracing a needle through the grooves of the cylinder, amplifying sound vibrations. It was difficult to mass reproduce recordings.
- Gramophone (1887): Similar to the phonograph, but used a flat disc instead of a cylinder. This made mass reproduction easier.
Analog vs. Digital Sound
- Analog: an electronic copy of an original audio signal. All sounds are based on analog signals. All real-world sounds are analog.
- Digital: a representation of sound recorded or converted into digital form. Sound waves are encoded as numerical samples in continuous sequence.
Basic Elements of Sound Design
- Foley sounds: Sounds created by objects and actions to enhance the audio of a scene.
- Voice over: A narrator's voice that guides the audience through a scene.
- Music: Used to establish the mood and dynamics of the scene.
- Sound Effects: Artificial sounds created to enhance the audio of a scene, often sounds that cannot be directly recorded.
Careers in Audio
- Audio is used in a wide range of industries including music, film, television, and video games.
- Careers in audio include sound designers, audio engineers, music producers, and sound editors.
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Description
Explore the fundamentals of audio, including its definition, measurement units like decibels and hertz, and the history of recorded sound. Discover the evolution from the phonautograph to digital sound technology. This quiz covers key concepts in audio engineering and sound perception.
