![\"Apple](\"https:\/\/i.blogs.es\/2646f4\/1621260558237\/450_1000.jpeg\")
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What is the sampling frequency and the depth of bits?<\/p>\n
![\"Lossless](\"https:\/\/www.xda-developers.com\/files\/2021\/06\/Guide-to-Lossless-Audio.jpg\")
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Computers are digital machines that handle 1 and 0. Therefore, any information that a computer needs to store, including audio, should be stored as a chain of some and zeros.<\/p>\n
On the other hand, the sound is not digital. It is analog and continuous nature. Then, if we want to store the sound in the computer storage unit, we must convert it to 1 and 0.<\/p>\n
There are many ways to make this conversion. The simplest is the pulse code modulation (PCM).<\/p>\n
The representation of the pulse code modulation is shown below.<\/p>\n
In PCM, we take analog audio, reproduce it and sample it at a predetermined speed in the form of some and zeros. This data is then stored in audio format.<\/p>\n
To better understand the process, imagine a photo of you playing baseball with the children. If you take 30 photos per second in an hour, you will have enough data to make an hour of video clips of 30 fps.<\/p>\n
The same happens when you show an audio signal. It is taking a pictorial snapshot of the audio signal at an established speed. Codify all those snapshots and you will have an audio file.<\/p>\n
To play an audio file, your computer only needs to play the snapshot at the same speed that was captured. This frequency is called sampling frequency.<\/p>\n
We measure the sampling frequency in KHz. The standard sampling frequency for audio CDs is 44.1 kHz.<\/p>\n
Now, since any audio consists of multiple sounds of different frequencies, we need to store multiple 1 or 0 to store all the necessary information. Therefore, we must strive to obtain the largest possible sample size, because the greater the sample, the better the sound quality will be.<\/p>\n
The sample size, which is the number of bits in each sample, is called depth of bits. The depth of standard bits on the audio CDs is 16 bits.<\/p>\n
High resolution audio<\/p>\n
In spite of all the uproar over high resolution audio music transmission services, surprisingly there is no standard definition. There is no consensus on what is high resolution audio.<\/p>\n
That said, the consensus is that the audio samples with high sampling and high-depth bits are called high resolution.<\/p>\n
As you can see, the previous definitions change constantly. For example, when the 8-bit audio is the standard, 16 bits \/ 44.1 kHz is high resolution. Nowadays, when 16 bits \/ 44.1 kHz is the standard, 24 bits \/ 96 kHz is located in the field of high resolution.<\/p>\n
In theory, high resolution audio sounds clearer and better. It has a greater dynamic range, better separation of instruments and low noise level.<\/p>\n","protected":false},"excerpt":{"rendered":"