![\"Audio](\"https:\/\/makethecitysoundbetter.com\/wp-content\/uploads\/2020\/10\/audio-file-formats.jpg\")
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bit: number of quantization bits (bit depth)<\/p>\n
![\"Audio](\"https:\/\/samplerateconverter.com\/pictures\/compressed-uncompressed-lossless-lossy-formats.png\")
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Number of quantization bits<\/p>\n
The number of quantization bits (bit) is the data sampled at the sample rate.<\/p>\n
A number that represents how much data capacity is provided.<\/p>\n
The higher the capacity, the finer the oscillation width of the sampled sound can be recorded.<\/p>\n
The sound is closer to the original sound.<\/p>\n
The number of quantization bits is also required to accurately record the sample rate.<\/p>\n
1bit has 2 stages, 2bit has 4 stages, 4bit has 16 stages, 8bit has 256 stages,<\/p>\n
16-bit has 65,536 steps, 24-bit has 16,777,216 steps …<\/p>\n
In short, at what stage should the oscillation amplitude (frequency) of the sound be recorded? That is to say.<\/p>\n
As an image, the sample rate is relative to the data in the horizontal direction.<\/p>\n
The number of quantization bits is vertical data and height value.<\/p>\n
That is why it is also called “bit depth”.<\/p>\n
If the number of bits is small,<\/p>\n
The difference (quantization error) from the original sound (sample rate) also becomes large.<\/p>\n
The noise (quantization noise) will also increase.<\/p>\n
Also, the dynamic range (D-range) is determined by the number of quantization bits, so<\/p>\n
The volume of music that can be expressed is also relevant.<\/p>\n
Dynamic range is the ratio (difference) between minimum sound and maximum sound.<\/p>\n
Noted in dB (decibels),<\/p>\n
The higher this value, the wider the range of volume that can be expressed.<\/p>\n
* Dynamic range in video is “brightness”. It is the difference between light and dark.<\/p>\n
\u2192 Video quality and resolution Different from the meaning of “SD, HD, Full HD, 4K UHD, 8K, 480p, 720p, 1080p, HDR, Dolby Vison”<\/p>\n
Since it is calculated by the maximum dB \u2252 6.02 \u00d7 number of bits,<\/p>\n
For example, if it is a 16-bit CD, it will be about 96 dB.<\/p>\n
Approximately 144dB for 24-bit, approximately 192dB for 32-bit.<\/p>\n
* Each time 1 bit is added, it increases by 6.02 dB.<\/p>\n
The dynamic range of human hearing is<\/p>\n
The limit is 120 dB to 130 dB,<\/p>\n
If it exceeds 140 dB, the ear will be damaged.<\/p>\n
Difference between high resolution and CD
\nHigh resolution and high resolution format definition
\nHigh resolution and high resolution format definition<\/p>\n
The word high resolution has become common, but<\/p>\n
High Resolution = High Resolution Audio = High Resolution Sound Source,<\/p>\n
Digital audio that has more sound information than conventional CDs.<\/p>\n
At JEITA (Japan Electronics and Information Technology Industries Association)<\/p>\n
High resolution definition is also specified,<\/p>\n
CD sampling rate (44.1-48 kHz) and<\/p>\n
Refers to data in the sound source that exceeds the number of quantization bits (16 bits).<\/p>\n
Either the sample rate or the number of quantization bits<\/p>\n
If it is less than the CD specification, it will not be high resolution.<\/p>\n
High resolution specific example<\/p>\n
44.1 kHz \/ 16-bit: CD specifications
\n48 kHz \/ 16-bit: CD specifications
\n44.1 kHz \/ 24 bit: high resolution (the number of quantization bits is greater than the CD specification)
\n48 kHz \/ 24 bit: high resolution (the number of quantization bits is greater than the CD specification)
\n96 kHz \/ 16 bit: high resolution (sampling frequency is higher than CD specification)
\n96 kHz \/ 24-bit: high resolution (both higher than CD specs)
\n96 kHz \/ 12 bit: not high resolution (low number of quantization bits)
\n32 kHz \/ 24 bit: not high resolution (sample rate is low)
\n\u2192 General Association Incorporated Japan Audio Association | High resolution | High resolution logo | Definition and operation<\/p>\n
Common high resolution formats are WAV and FLAC.<\/p>\n
There is also 96 kHz \/ 24 bit in ALAC, but<\/p>\n
At the moment, Apple (iTunes) does not support high resolution.<\/p>\n
Also, as defined by the Japan Audio Association,<\/p>\n
DSD (DSD2.8MHz, DSD5.6MHz, etc.) is also recognized as high resolution.<\/p>\n
The high-resolution compressed sound source “MQA” has also appeared.<\/p>\n
It’s hard to say that all of them are popular, so<\/p>\n
If you use WAV or FLAC. Considering capacity, it’s FLAC.<\/p>\n
Compared to uncompressed WAV, it can save 30-40% capacity.<\/p>\n","protected":false},"excerpt":{"rendered":"