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“Which sound file?” A guide for newbies

“Which sound file?” A guide for newbies. WAV.

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“Which sound file?” A guide for newbies

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  1. “Which sound file?” A guide for newbies

  2. WAV • WAV is the most common way for storing digitised sound. One minute of a saved sound to a WAV file requires 2.5 MB of disk space. WAV is used when audio is stored on CD’s. Other audio formats can take WAV files and reduce them into a smaller file size.

  3. MP3 • MP3 is an extension of the file format MPEG audio, this is a compression algorithm which can be used on a number of different audio formats, one of which would be a WAV file format. MPEG uses psychoacoustic modelling that removes frequencies that the brain and ear will not miss. Therefore the size of the file is reduced without a noticeable loss of quality. One minute of an MP3 sound can be reduced to 0.25 MB. MP3 is the compressed format that most music found on the internet.

  4. MIDI • MIDI (Musical Information Digital Interface) is a widely used representation for instrumental music that doesn’t store sound waves at all. It stores digital representation of the notes to be played, including what note, what instrument and what duration. This is very compact and very flexible. A textbook definition of MIDI: A way of representing the sound made by an instrument.

  5. Streaming Audio • Internet audio sources stream the sound to a streaming client e.g. RealPlayer on your computer. As the streaming client receives the audio data, it puts a buffer to be stored until it is used. A few seconds after the client starts receiving audio data, the client player starts reading the data from the buffer and starts playing it.

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