Audio Media Basics

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Questions and Answers

Which method of compression permanently removes some original data?

  • Metadata compression
  • Lossless compression
  • Lossy compression (correct)
  • Delta compression

What characterizes the pitch of a sound?

  • The auditory sensation produced by a sound
  • The musical quality of a sound
  • The degree of highness or lowness of a sound (correct)
  • The force of a sound

Which of the following is NOT a principle of sound design?

  • Volume (correct)
  • Pace
  • Mixing
  • Transition

What is the purpose of using sounds or audio media in education?

<p>To allow learners to engage with expert views (C)</p> Signup and view all the answers

What type of sound transition involves a smooth change between two audio files?

<p>Cross-Fade (C)</p> Signup and view all the answers

Which audio file format is known for its lossless compression method?

<p>WAV (A)</p> Signup and view all the answers

What is the primary purpose of audio media in education?

<p>To provide auditory enhancements to visual content. (A)</p> Signup and view all the answers

In terms of digital audio storage, which device is primarily used for portability?

<p>USB Flash Drive (A)</p> Signup and view all the answers

Which of the following best describes a characteristic of sound in audio media?

<p>It consists of waves that carry energy through various mediums. (C)</p> Signup and view all the answers

What is an essential principle of sound design used in audio media?

<p>Utilization of silence to create contrast and focus. (D)</p> Signup and view all the answers

Flashcards

Lossy Compression

Reduces file size by permanently removing some original data.

Lossless Compression

Reduces file size by removing unnecessary metadata.

Sound Effect

Sound, other than dialogue or music, created for effect in media.

Sound Mixing

Balancing, combining, and controlling multiple sound components.

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Sound Transition

Process of moving from one piece of sound to another.

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Audio Media

Media communication using audio equipment to deliver information through sound.

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Audio File Formats

Different ways of storing and compressing digital audio data.

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Radio Broadcast

Sending live or recorded audio through radio waves to a large audience.

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Audio Podcast

An episodic series of digital audio files that can be downloaded for listening.

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Study Notes

Audio Media Definition

  • Audio is anything connected to sound, specifically when received, recorded, transferred, or duplicated.
  • Audio is related to documenting and transmitting sound.
  • Audio is a resource of media and information, along with text, visual, and motion.

Audio Media Types

  • Audio Media refers to media communication using audio equipment to report, document, and deliver information through sound.
  • Audio can include formats like analog tape cassettes, digital compact discs, and computer files.
  • Audio information is a file or sound created and transferred using high-fidelity waves heard through audio tools.

Types and Categories of Audio Information

  • Radio Broadcast involves sending live or recorded audio via radio waves to a large audience.
  • Music is an artistic form of auditory communication using structured, continuous instrumental or vocal tones.
  • Sound Recording is the encoding of any sound from surroundings, creating a record of a certain sound.

Audio Information Types

  • Sound Clip/Sound Effect is a sound (aside from dialogue and music) artificially created for effect in movies, plays, or broadcasts.
  • Audio Podcast is an episodic series of digital audio or video files downloadable for listening.

Ways of Storing Audio Files

  • Tape is a magnetic tape format for documenting sound recordings.
  • Compact Disc is a plastic, circular tool for recording, storing, and playing back audio, video, and other digital information.
  • USB Flash Drive is a small, external hard drive that plugs into a computer's USB port.
  • Memory Card is a small, flat flash drive for saving audio, pictures, texts, and videos on portable devices.
  • Computer Hard Drive is a secondary data storage device for digital data.
  • Internet/Cloud is a network of remote servers used for storing and retrieving audio and other computer data.

Audio File Formats

  • MP3 (MPEG Audio Layer 3) is a coding format for consumer audio and sound sequence compression for transmission and playback.
  • M4A/AAC (MPEG-4 Audio/Advanced Audio Coding) is a file extension for lossy digital audio compression.
  • WAV (Waveform Audio File Format) is a Microsoft audio file format standard for personal computer digital audio data storage.
  • WMA (Windows Media Audio) is a file extension developed by Microsoft for use with Windows Media Player.

Lossy vs Lossless Compression

  • There are two compression methods: lossy and lossless.
  • Lossy compression permanently removes some original data to reduce file size.
  • Lossless compression reduces file size by removing unnecessary metadata.

Characteristics of Sound

  • Volume is the force of a sound.
  • Tone is the musical or vocal sound of a definite quality.
  • Pitch is the degree of highness or lowness of a sound.
  • Loudness is the feature of a sound that determines the degree of auditory sensation.

Purposes of Using Audio Media

  • Audio media enables learners to access the ideas and views of experts and other reliable people.
  • Audio media allows learners to listen to learning materials (e.g., speeches).
  • Audio media serves as alternative guides for learners during tasks like experiments.
  • Audio media provides learners with access to audio recordings of past events from locations they can't visit.

Elements and Principles of Sound Design

  • Dialogue is a conversation.
  • Sound Effect is a sound aside from dialogue and music, artificially created to add impact.
  • Music is instrumental or vocal that conveys emotions.
  • Silence is the absence of noise or sound.

Sound Design Techniques

  • Mixing is the balance, combination, and control of numerous sound elements.
  • Pace is the editing and time control in sound design. Linear refers to permanent sounds used at a fixed position; non-linear refers to more flexible sounds. Multi-linear is a category for sounds that are flexible.

Transitions in Sound Design

  • Transition is the process of moving from one sound element to another.
  • Segue is an uninterrupted movement between sounds.
  • Cross-fade is a smooth transition between two adjacent sounds.
  • V-Fade is a switch from one volume level to another, potentially with silence between elements.
  • Fade to Black is a V-Fade with silence between sound segments.

Additional Audio Features

  • Stereo Imaging is the feature of sound documentation and duplication concerning the perceived spatial locations of sound sources (sideways and depth).

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