We can take these away and the difference will be unnoticeable.Īt The Brainwave Hub, we send uncompressed PCM audio to Youtube’s converters just for the sake of presentability, but what if you were to upload an already-compressed MP3 file for further transcoding? Well, when listening to CD quality audio, or uncompressed FLAC files for example, not all frequencies are perceivable to the human ear, particularly those on the extremes of the spectrum. How is it determined exactly which frequencies to remove? Encoders work by removing certain frequency content in order to reduce file size. The range of human hearing is approximately between 20hz – 20khz. Youtube transcodes uploaded content in order to make it suitable for streaming, and readily available to a wide audience on devices such as mobile phones, tablets, notebooks and PCs. During this stage, the audio can remain uncompressed, leaving this task to Youtube’s automated encoding process. First there is the initial rendering process, where the video file is compressed down to a size that won’t take days to upload. There are two stages to encoding a track to be uploaded to Youtube. Let’s put this claim to the test shall we? With the sudden proliferation of brainwave entrainment audios on Youtube, certain companies, in an attempt to compensate for diminished traffic to their web stores have attempted to discredit channels like ours, claiming that once uploaded and subjugated to the process of audio compression, Youtube audios are no longer effective.
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