By doubling that you can assume that nothing relevant is lost when recording/reproducing the original sound. The human hearing range tops out at about 20kHz. This theorem determined that if you double the maximum frequency of the source you can accurately capture the sample.
This all stems from the groundwork laid out in the Nyquist–Shannon theorem. For example, CDs have a sampling rate of 44.1kHz. The sampling rate is the number of samples taken in a second. Now let’s look at some common files you’ll likely have encountered and dive into the details of their respective audio bitrates.īitrate is determined by the sampling rate and the bit depth. More kilobits equals more data stored across the full frequency range. It will also be defined by the crispness and clarity of high frequencies. For the average listener, the quality will be defined by the strength and depth of low frequencies. The more kilobytes that are stored per second the higher the sound quality of the file. For example, a 128 kbps (kilobits per second) file will have 128 kilobits stored for every second of audio. When it comes to sound files this is calculated by the number of kilobits of data per second.
Every second of an audio recording contains a certain amount of data or bits. Every audio file has a “bitrate” associated with it. What Is Audio BitrateĪudio bitrate defines the amount of data that is stored in the sound file you are listening to.
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