Linear Digital to Analog Converter (DAC) detectionHow to apply for a report? What items need to be tested? We will conduct testing and evaluation in strict accordance with the standards. We can also provide personalized testing plans and reports according to your needs.

DAC (Digital to Analog Converter) is a device that converts digital signals into analog signals (in the form of current, voltage, or charge). Computers cannot directly process sound signals. To convert them into digital signals that the computer can recognize, the DAC in the sound card is used. To convert sound signals into digital signals, there are two steps, namely sampling and conversion. The traditional audio compression technology is based on the auditory model of the human ear. This theory is based on the principle that at a certain frequency, loud sounds can be compressed over small sounds, thereby deleting small sounds; A loud noise will make you unable to hear other sounds. In fact, people cannot hear small sounds, but they can distinguish them, and there are still some that can be heard carefully. So DAC has created its own natural acoustic model, ensuring the resolution of all sounds. The DAC format has the following characteristics: it supports high-quality audio compression algorithms at the same level as AC-3 and DTS; Support frequencies from 22K-1M; Support channel count from 1 to 32 channels, including 5.1 and 7.1; Supports 16-bit to 32-bit; Each channel is independently encoded, without interference or crosstalk issues; The bit rates per channel are 75, 100, 120, 150Kbps, and so on

Test report function

1、Project bidding: issue authoritative third-party CMA/CNAS qualification report；

2、E-commerce platform entry: quality inspection reports recognized by major e-commerce platforms；

3、Used as sales report: issuing a test report with legal effect to make consumers feel more at ease；

4、Papers and scientific research: providing professional and personalized testing needs；

5、Judicial services: providing scientific, fair and accurate testing data；

6、Industrial problem diagnosis: verifying the troubleshooting and correction of problems in industrial production；