UNDERSTANDING COMPUTER FILES
FILE SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The amplitude of the sound wave
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The frequency of the sound wave
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The time of the sound wave
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The magnitude of the sound wave
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Detailed explanation-1: -The 16 bit values in the wav file are amplitude values, encoded as signed 16 bit numbers. The amplitude can go from-32768 to +32767. The value can often better be interpreted as (almost)-1.0 to +1.0, but this is an interpretation.
Detailed explanation-2: -Waveform Audio File Format (WAVE, or WAV due to its filename extension; pronounced “wave") is an audio file format standard, developed by IBM and Microsoft, for storing an audio bitstream on PCs. It is the main format used on Microsoft Windows systems for uncompressed audio.
Detailed explanation-3: -The WAV format is one of the simplest for storing audio information. The data is stored “in the raw” with no preprocessing. The WAV format is a Microsoft proprietary format, and is a special case of the RIFF (Resource Interchange File Format) format.
Detailed explanation-4: -Wave files use the standard RIFF structure which groups the files contents (sample format, digital audio samples, etc.) into separate chunks, each containing it’s own header and data bytes. The chunk header specifies the type and size of the chunk data bytes.