![\"analog\"](\"https:\/\/harmonic-sound.com\/wp-content\/uploads\/original_sound.png\")
<\/p>\nUse an audio interface when recording live sound to your DAW. At this time, the A \/ D converter converts analog to digital
\nand kHz or bits are used during this conversion process.<\/p>\n
Let’s take a look at the following figure. It is analog, so of course it is continuous.<\/p>\n
<\/p>\n
Analog input waveform
\nWhen
\nconverted with low kHz (sampling frequency) and low bits (speed), it becomes as shown in the figure below.<\/p>\n
![\"Digital\"](\"https:\/\/harmonic-sound.com\/wp-content\/uploads\/samp_ex1.png\")
<\/p>\n
Waveform after digital recording Low sample rate
\nThe prototype of the original sound of the original is somehow preserved.
\nWhen converting with a high sample rate and bit rate, it will be as shown in the figure below.<\/p>\n
Waveform after digital recording High sampling frequency
\nIt is close to the original waveform.<\/p>\n
The
\nAbove figure shows the difference between low sample rate and low bit rate and high sample rate and high bit rate.<\/p>\n
Now about the sample rate and bit rate.<\/p>\n
The sampling rate, also known as “sampling”,
\nrepresents how many times it is sampled per second.<\/p>\n
The bit rate, also known as “quantization”,
\nindicates how many steps the loudness is reproduced from silence to maximum volume.<\/p>\n
The following figure is the picture. The apparent difference between “16 bit and 24 bit” is 24-16 = 8, but in reality there is a stage difference of 16,777,216 steps-65,536 steps = “16,711,680 steps”. The difference between 16-bit and 24-bit is actually 256 times.
\n16-bit 44.1 kHz recording
\n24-bit 48kHz recording<\/p>\n
By the way, the sampling frequency is 48 kHz \u00f7 44.1 kHz = 1,088 times.<\/p>\n
It makes no sense to judge sound quality by numbers, but
\nI think the relationship between sample rate and bitrate is not negligible difference.<\/p>\n
Another thing related to sound is the “standards \/ features”.<\/p>\n
Audio CDs are created at 44.1 kHz, 16-bit, but as the response of
\nfrequency is 20 Hz to 20 kHz, to be precise, the sound
\nbetween 20 Hz and 20 kHz it is sampled 44,100 times per second and
\nvolume is 65,536. What we record on stage is the
\n“CD” we are listening to.<\/p>\n
By the way, the bit rate is 1411.2 kbps.<\/p>\n
Just a bit for reference on the ability to generate data.
\nInformation such as headings and labels is actually added, so it will be a bit larger.<\/p>\n
Taking WAV as an example,
\ndata size = sample rate (Hz) x number of bits x number of channels x time (seconds)
\n1 second stereo sound source (2ch) recorded at 44.1 kHz, 16-bit<\/p>\n
When converted to WAV,
\n44,100 (Hz) x 16 bits x 2 channels x 1 second = 1,411,200 bits
\nByte conversion = 1,411,200 bits \u00f7 8 = 176,400
\nByte Conversion KB = 176,000 Bytes \u00f7 1024 = 172KB<\/p>\n
One second of WAV data is 172 KB.<\/p>\n
So how many minutes of WAV data can you burn to a CD-R?<\/p>\n
CD-R 650 MB = 665,600 KB \u00f7 172 KB (1 second) =
\nConverted to 3869 seconds = 3869 seconds \u00f7 60 = 64 minutes<\/p>\n
The time that WAV can be recorded on a CD-R in data format is 64 minutes.
\n* The recording time in CD-DA format and the recording time in WAV data
\ndiffer depending on the recording format.<\/p>\n
Reference:
\n1Byte = 8bit
\n1KB = 1024byte
\n1MB = 1024KB = 1,048,576Byte
\n1GB = 1024MB = 1,073,741,824Byte
\n1TB = 1024GB = 1,099,511,627,776Byte<\/p>\n
As always,
\nI think there may be minor errors in the omission of rounding in the calculation and the content of the explanation, but please understand it at the OK level if it is approximately correct.<\/p>\n","protected":false},"excerpt":{"rendered":"