![\"AUDIO](\"https:\/\/blog.landr.com\/wp-content\/uploads\/2018\/01\/How-to-dial-in-perfect-compressor-settings-2-Threshold.png\")
<\/p>\n<\/p>\n
[Sound source used and points of interest]
\n\u30fb 1kHz sine wave
\nCheck for noise or correction. Investigate if abnormal sounds are mixed by emphasis or noise different from the originally generated range.<\/p>\n
![\"Audio](\"https:\/\/i.ytimg.com\/vi\/UaIv3rC1nxA\/maxresdefault.jpg\")
<\/p>\n
\u00b7 White noise
\nCheck the frequency characteristics. Use sounds that are emitted at the same level for all sounds from 0 to 20 kHz and see if they are reproduced correctly.<\/p>\n
\u00b7music
\nUse real music and investigate the differences with the original.<\/p>\n
[Bitrate Settings]
\nFixed bit rate: 96kHz, 128kHz, 256kHz, 320kHz Variable bit rate: 96-160kHz, 192-320kHz.
\nHowever, depending on the software, 320kHz cannot be set fixed and 350 can be set, or the upper and lower limit bits cannot be specified in the variable, and the sound quality standard can be specified in several steps ( medium sound quality, high sound quality). quality).be. Also, there are some that are configured with average bitrate instead of variable bitrate, so understand that it’s not a completely fair comparison.<\/p>\n
[Software used [encoder]]
\n\u30fb MP3 system
\nAfternoon Koda Ver.3.11a [gogo.exe ver.3.11]
\nLame Ivy Frontend Encoder Ver.2.91 [Lame.exe Ver.3.93]
\nB’s GOLD Ver.7.12 [Unknown]
\nRipAudiCO Ver.3.70 [leme_enc.dll Ver.3.93]<\/p>\n
\u30fbOGG system
\noggdropXPd Ver.1.7.11 [Unknown]
\nB’s GOLD Ver.7.12 [Unknown]<\/p>\n
\u30fb WMA
\nB’s GOLD Ver.7.12 [Unknown]
\n(For WMA, I tried 3 types of software in my environment, but the result was exactly the same (maybe the encoder itself uses the same thing?) And it corresponds by software Since the bitrate range was narrow, only used a type).<\/p>\n
\u30fb ATRAC
\nnothing special. For ATRAC, we recorded analog from a CD player to an MD deck, optically connected an MD deck to a PC, and measured what was captured by WAV.<\/p>\n
\u00b7 To measure
\nWave Space Ver.1.31<\/p>\n
\u3010others\u3011
\nAlthough it is different from the main theme, I converted it to WAV for the visual measurement of each standard (because WaveSpace only supports wav), but the position where the sound of the WAVized data ends and the total playback. We discovered that there was a difference in time. , so we also investigated it.<\/p>\n
3.Hardware 3.
\nOriginally, the equipment used should be described in detail here, but the hardware environment is different for each individual, and this survey is only a guide in the first place, and it will be different if other people do the same. is a possibility of results, I will omit the detailed description of the hardware. (The thing is that I don’t have enough equipment to publish)<\/p>\n
\u3010Results of the test\u3011
\nSee the following for a summary of the results of each survey.
\n\u30fbWhite noise measurement result
\n\u30fb1kHz sine wave measurement result
\n\u30fbMusic measurement results
\n\u30fbSimple file size and comment list<\/p>\n
[Discussion]
\nah There seems to be no big difference in file size (between the same bitrate)
\nstomach. Sound quality appears to be MP3 < WMA < OGG at low bit rates
\n(MP3: 128 = WMA: 96 < OGG: 96).
\nHare. There is little difference at high bit rates
\n(there is a slight difference in the treble range, but it seems you won’t notice the difference unless you’re in a very good environment).
\nWorker. The difference in the encoder software was more than I expected
\n(especially in MP3)<\/p>\n
“My conclusion”
\n[Less than 128]
\nIf you’re worried about popularization (compatibility), [WMA] is good, and if you basically use it alone, [OGG] is good.
\n(I am worried about the amount of noise or the correction, but I sacrificed a bit on the sound quality anyway, so I chose the one that covers up to the high range as it is. Also, due to the relationship between \u2460 and \u2461, mp3 is another with the same sound quality.The file size will be larger than<\/p>\n
[With 256 and more]
\nThe variable bit rate (192-320) of [Afternoon Koda] is good.
\nThe fixed 320 is good for sound quality, but there is little difference between the fixed 256 and variable high-quality sound, and it seems that you can barely understand it even if you listen to it. If the sound quality is about the same, the smaller the file size, the better.<\/p>\n
[Other impressions]
\nAbout OGG
\nI had high expectations for OGG, but I was concerned about the measurement result at 1 kHz, whether it was noise or correction. However, I find the relationship between sound quality (wide playback band) at low bit rates and file size to be excellent. At high bit rates the sound quality and file size are about the same as MP3s so I think MP3s are advantageous considering the penetration rate but I think they are doing pretty well considering the fact that they have just been developed. expected in the future<\/p>\n","protected":false},"excerpt":{"rendered":"