An Exploration of Digital Audio

In digital audio, there are three core parameters - sampling rate, bit rate and bit depth. They form a solid foundation for audio quality, supporting the accurate transmission and perfect reappearance of sound. Today, let's explore their mysteries in digital audio.

It refers to the number of samples taken per second when converting an analog signal into a digital signal. As one of the significant parameters of audio quality, the sampling rate is measured in Hertz (Hz) or samples per second.

As a measure of data transmission speed,  bit rate also plays an important role in the audio field. It refers to the number of bits transmitted per second, which directly determines the compression level and sound quality of audio data.

Bit depth, also known as sampling accuracy, refers to the number of bits used for each audio sample. It determines the quantization accuracy of the audio signal.  The bit depth directly affects the dynamic range and fidelity of the audio. A higher bit depth means more quantization levels, which can represent the subtle changes of audio signal more accurately.

High sampling rate provides better time resolution and a wide frequency range; high bit depth brings higher dynamic range and fidelity; bit rate determines the audio compression level and sound quality. 

In actual applications, we need to flexibly adjust these three parameters according to needs and device performance to achieve the best audio experience.