This tool converts the audio sampling rate in Hz (Hertz) to bit rate in kbps (kilo-bit-per-second).
The human ear can listen to frequencies between 20 Hz and 20,000 Hz. An industry standard sampling rate of 44,100 Hz is used for audio. This frequency is more than 2 x 20 kHz (Nyquist rate) and therefore the digital samples are sufficient for waveform reconstruction.
Each sample of the ADC consists of a number of bits (called the bit depth). The greater the number of bits, the better the resolution.
Rkbps = Fs * NADC * Nchannels
- Rkbps is the bit rate
- Fs is the sampling rate in kHz
- NADC is the number of bits that represent each ADC sample
- Nchannels is the number of channels
Apple Lossless Audio Codec supports up to 8 channels of audio at 16, 20, 24 and 32 bit depth with a maximum sample rate of 384 kHz.
At the highest bit depth and max rate the effective bit rate for ALAC is 98304 kbps or ~ 98 Mbps.
FLAC by comparison supports up to 8 channels of audio at a max bit depth of 32 and max sampling rate of 655,350 Hz.
At the highest bit depth and max rate the effective bit rate for FLAC is 167769.6 kbps or ~ 168 Mbps.