Sampling Rate
sample_rate： 44100
It refers to a sampling rate of 44,100 times a second collection
Channel
- channels: 2
- Generally left channel, right channel, the greater the number of acquisition channels out of the file size
Sample size (sampling format)
- sample_size/sample_fmt：
- AV_SAMPLE_FMT_S16
- AV_SAMPLE_FMT_S16P (planar sample type, planar storage)
- AV_SAMPLE_FMT_FLTP
An amount of data
- nb_samples: 1024 Single Channel number of samples
- Calculated frame rate: 44100/1024 = 43.066 frame rate
- One second of audio Size: 44100x2x2 = 172.26KB
- An audio size: 1024x2x2 = 4096B