The value of audio chips lies not only in their ability to “play sound” but also in whether they can make the sound feel “natural and comfortable.” A key component in this process is the DAC (Digital-to-Analog Converter).
The music or speech we hear daily starts as digital signals of 0s and 1s within the chip, which must be converted into continuous sound waves by the DAC to drive headphones or speakers. The challenge is that the human ear is very sensitive to sound; even a distortion of just 1dB or a bit of background noise can be detected, making the sound quality harsh or piercing.
Therefore, when designing audio chips, engineers focus not only on processing speed but also on signal accuracy, dynamic range, and power consumption control. For example, high-end smart speaker or headphone chips particularly emphasize the DAC‘s bit depth and sampling rate, ensuring stable output even in low-power modes to balance battery life and sound quality.
Further Reading
PREVIOUS RECOMMENDATIONS
The Relationship Between Audio Processing and SRAM Testing Algorithms