How to improve video sound quality? Part 2
Bit rate
It is a numeric value of how much data is voice data in one second.
The unit is bps.
If the bit rate is high, the sound quality can be improved because one second’s sound can be played with a large amount of data.
For AAC and MP3 used in Internet video, the upper limit is 320 kbps. (MP3 is the upper limit of the specification. AAC may be higher depending on software.)
resume
To briefly summarize,
・ High sampling rate
・ High bit rate
If so, the sound quality can be improved in terms of data.
However, the higher the bitrate, the greater the amount of audio data.
If it is 320 kbps, it will be 300 MB in an hour.
I wrote that there is a trade-off between image quality and capability when deciding the image quality of a video, but the same idea applies to sound quality.
If you want to stream music clearly, you may want to consider improving sound quality at the expense of picture quality.
If it’s a movie, you can look at both picture quality and sound quality, even if it reduces viewer comfort.
If you just need to broadcast how the instructor speaks alone, like in a seminar, you probably don’t need as much sound quality.
However, if the original audio data is noisy or the sound is broken, there is little point in improving the sound quality of the data.
First of all, it may be the most important thing to try to record in the best possible environment.
I’d like to write an article about the recording method at another time.
In addition to that, it should be set to high sound quality as video data.
