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Standard CD-quality audio uses a sample rate of 44.1 kHz (k means times 1000). The sample rate is measured in “Hertz” – a unit of frequency describing cycles per second. This means that the audio is sampled 44100 times every second. The sample rate is the number of times the audio is sampled per second.For example, CD audio has a sample rate of 44100 Hz. The blue waveform on top is the MP3.Ī few more terms you will come across when you deal with audio file formats are Sample Rate, Bit Rate & Bit Depth. They are the same performance rendered to two different qualities – WAV and MP3. They simply cannot and will not work with compressed files. It is an industry standard to deliver your final audio file (2-mix) to mixing and mastering engineers in an uncompressed format. Notice how compound compression has damaged the second example below. So, it is best to try to preserve as much as you can from the beginning. It also makes any processing you did basically useless. When you start with a lossy compressed audio source (like MP3 or AAC), further compression will compound the effect of the thrown away audio information. The reason for this may be self-evident to you – but it is critical for me to explain. However, when you are recording audio or downloading samples, always shoot for the best quality you can get. This has its advantages when distributing the content. When we compress the file, it becomes significantly smaller than the original one. Lossy or compressed file types like MP3s throw away audio information to reduce the file size. It is essential to understand the difference between uncompressed and compressed audio file types. Lossless audio formats: FLAC, WMA, ALAC.Uncompressed audio formats: WAVE, AIFF & PCM.They can be categorized into 3 main groups.
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With that being said, we will mention several here that are very common to the majority of DAWs. In the world of audio, you are going to come across many different audio file types.