SLAAED0 March   2024 TAS2764 , TAS2780 , TAS2781

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Measurement Methodology
  6. 3 Introduction to Noise-gate and Pop in Class-D Amplifiers
  7. 4 Causes of Pop in TAS27xx family of Class-D Amplifiers
  8. 5 Click and Pop Using TAS27xx
  9. 6 Click and Pop Measurement Technique Using AP v6.0. 2
    1. 6.1  Measurement Setup
    2. 6.2  Filter Settings
    3. 6.3  Data Capture Settings
    4. 6.4  Auto Range Settings for Pop Measurement
    5. 6.5  ASI or I2S Configurations for Pop Measurement
    6. 6.6  APx Sound Level Meter Utility
    7. 6.7  Data Acquisition
    8. 6.8  Interpreting Click and Pop Waveforms
    9. 6.9  Post Processing of AP Waveforms
    10. 6.10 A-Weighted Click and Pop Numbers
    11. 6.11 Exporting the A-Weighted Numbers
  10. 7 Noise-Gate Pop and Measurement Technique Using APx
  11. 8 Configuring TAS2764 for Improved Click and Pop Noise Performance
    1. 8.1 Explanation
  12. 9 Summary
  13. 10References

6.3 Data Capture Settings

For the click and pop measurement, continuous capture of Peak Level is done over a fixed duration of time (for example, 30 seconds) through Measurement Recorder option in APx555 measurement software. This data is stored in a file and post-processing is done over the stored data to get A-weighted results.

GUID-20231109-SS0I-GWGK-9RNS-Z3WXL4R1BGGZ-low.png Figure 6-5 Peak Level Measurement Through Measurement Recorder

The Save to File option in the Measurement Recorder option needs to be enabled as shown in Figure 6-6.

GUID-20231109-SS0I-GWTS-QW03-3BL2JQCTX0K7-low.png Figure 6-6 Save to File Option to be Enabled

Click the File Settings button and a pop-up window appears as shown in Figure 6-7. In this pop-up window, configure a folder path for the Measurement Recorder to save the data. And select file format as Extensible Multi-channel PCM and Bit depth as 24 bits.

GUID-20240312-SS0I-F9Z2-KK7X-0ZPPMCXLHXNG-low.jpg Figure 6-7 Save to File Setting Options