What are the main factors affecting the sampling rate of voice chips?

The three main factors that affect the sampling rate of voice chips are: the number of sampling bits: the number of sampling bits can be understood as the resolution of the acquisition card to process the sound. The larger this value is, the higher the resolution is, and the more realistic the recorded and played back sound is. Sampling frequency: the sampling frequency refers to the number of times the voice chip burner collects the sound signal within 1s. The higher the sampling frequency, the more realistic and natural the sound restoration is. Audio sampling: the audio chip system reproduces the original sound by converting the sound wave waveform into a series of binary data. The device used to complete this step is the analog/digital converter (A/D). It samples the sound wave at a rate of tens of thousands of times per second. Each sample records the state of the original analog sound wave at a certain time, which is called a sample. By connecting a series of samples, a sound wave can be described. The number of samples taken per second is called the sampling frequency or sampling rate, and the unit is HZ (Hertz). The higher the sampling frequency, the higher the sound wave frequency that can be described. The sampling rate determines the range of sound frequencies (equivalent to the tone), which can be represented by a digital waveform. The frequency range represented by a waveform is generally called bandwidth.

So what are the commonly used voice chip sampling rates?

The sampling frequencies commonly used by mainstream sound cards are generally 11KHz, 22KHz, 24KHz, 44.1KHz (sound samples are collected 44.1 thousand times per second) and 48KHz. 11KHz can achieve the sound quality of AM radio, while 22KHz and 24KHz can achieve the sound quality of FM radio. 44.1KHz is the theoretical limit of CD sound quality, and 48KHz is more precise and is also the sampling frequency used by miniDV, digital TV, DVD, DAT, movies and professional audio.

The higher the bit rate, the larger the audio file size.

How to calculate the sampling rate suitable for the chip capacity?

Usually the chip: voice sampling rate (K) = voice chip seconds * 6 / voice length