1, Sampling rate
Sampling rate refers to the frequency at which sound signals are sampled and processed in digital audio. The adoption rate is expressed in Hertz (Hz), which represents how many samples are collected per second.
For example, if the sampling rate of CD sound quality is 44.1KHz, it means that 44100 samples are collected and processed per second. The higher the sampling rate, the wider the frequency response of the sound signal, and the better the sound quality. Of course, the higher the sampling rate, the more storage space will be occupied.
2, Positional depth
Bit depth refers to the number of bits occupied by each sampling point in digital audio. Bit depth determines the dynamic range of digital audio, which is the distance between the maximum and minimum amplitudes of the sound signal.
The higher the bit depth, the larger the dynamic range of digital audio, which can more accurately display the details and differences of sound signals.
For example, the bit depth of CD sound quality is 16 bits, which means that each sampling point occupies 16 bits. Like the sampling rate, higher bit depths also occupy more storage space.
3, Code rate
Bit rate refers to the data transmission rate in digital audio, which is the product of sampling rate and bit depth, expressed in bit rate (bps).
For example, the bit rate of CD sound quality is 1411kbps (44.1KHz * 16 bits). The higher the bit rate, the better the quality of digital audio, but it also takes up more storage space and transmission bandwidth.
4, Lossless music
The lossless music we often refer to is actually a digital audio format that compresses the size of audio files without compromising sound quality.
Unlike common lossy music formats such as MP3, AAC, etc., lossless music uses compression algorithms that do not lose any information from the original sound signal. Therefore, the sound quality of lossless music files is the same as the uncompressed original file, but the file size is smaller. Common lossless music formats include FLAC, ALAC, WAV, etc.
5, How to choose?
It is not difficult to see that the sampling rate and bit depth determine the quality of digital audio, while the bit rate and lossless music affect the size and transmission rate of digital audio. When choosing digital audio formats and storage methods, we need to balance factors such as sound quality, file size, and transmission speed.
Generally speaking, high sampling rate and bit depth can improve the sound quality of digital audio, but it also increases file size and transmission bandwidth requirements. Lossless music provides a way to compress file size without losing sound quality, but lossless music files are usually larger than lossy music files.
For car enthusiasts, when choosing digital audio formats and storage methods, they need to make choices based on their own needs and device support. For example, for car enthusiasts who need to store a large amount of digital music, they can choose lossy music formats (such as MP3) to reduce file size; For true audiophiles, they can choose high sampling rate and bit depth digital audio formats (such as FLAC, WAV) to achieve higher quality sound.
