Wav file header definition

In 16 bit, a total of 65, to amplitude levels are available. The greater the resolution of the file is, the greater the realistic dynamic range of the file. CD-Audio uses 16 bit samples. What is Sample Rate? Sample rate is the number of samples per second. CD-Audio has a sample rate of 44, This means that 1 second of audio has 44, samples. DAT tapes have a sample rate of 48, What are Channels? Channels are the number of separate recording elements in the data.

For a real quick example, one channel is mono and two channels are stereo. In this document, both single and dual channel recordings will be discussed. What is the data? The data is the individual samples. An individual sample is the bit size times the number of channels. For example, a monaural single channel , eight bit recording has an individual sample size of 8 bits.

A monaural sixteen-bit recording has an individual sample size of 16 bits. A stereo sixteen-bit recording has an individual sample size of 32 bits. Samples are placed end-to-end to form the data. So, for example, if you have four samples s1, s2, s3, s4 then the data would look like: s1s2s3s4. What is the header? The header is used to provide specifications on the file type, sample rate, sample size and bit size of the file, as well as its overall length.

So, that's the header. For a java example please refer to my answer here: stackoverflow. Add a comment. Active Oldest Votes. Characters are each 1. Typically, you'd fill this in after creation. For our purposes, it always equals "WAVE". Includes trailing null 16 Length of format data as listed above 1 Type of format 1 is PCM - 2 byte integer 2 Number of Channels - 2 byte integer Sample Rate - 32 bit integer. Marks the beginning of the data section.

Sample values are given above for a bit stereo source. Hannes Hannes 1, 22 22 silver badges 32 32 bronze badges. So the File size values are 32 bit integers containing the number of 8-bit bytes in the entire file and the data section respectively? Is sample rate bit or byte , because if I'm not mistaken the latter is much larger than necessary at bits. Abhijit Sarkar Abhijit Sarkar Sign up or log in Sign up using Google. Sign up using Facebook.

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