SBAU141A January   2009  – April 2024 PCM2912A

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Pin Assignments and Terminal Functions
    2. 2.2 Interface and Connections
  9. 3Software
    1. 3.1 Software Setup Guide
      1. 3.1.1 Basic Operating Setup for Windows 10
        1. 3.1.1.1 Basic Setup Before Evaluation
        2. 3.1.1.2 Volume and Mute Settings
        3. 3.1.1.3 Sampling Frequency
      2. 3.1.2 Basic Operating Setup for Mac OS
        1. 3.1.2.1 Basic Setup Before Evaluation
        2. 3.1.2.2 Volume Settings
        3. 3.1.2.3 Sampling Frequency
  10. 4Implementation Results
    1. 4.1 Evaluation Setup
    2. 4.2 Performance Data and Results
      1. 4.2.1 Measurements for Dynamic Characteristics
      2. 4.2.2 Playback Performance
      3. 4.2.3 Recording Performance
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Related Documentation
  14. 8Revision History

3.1.2.2 Volume Settings

Follow these steps to configure the volume settings for headphones, microphone, and the recording options.

To set the headphone volume:

  1. Open the Audio MIDI Settings options (Application→Utility→Set Audio MIDI), as illustrated in Figure 4-9. Alternatively, open the Output tab of the Sound options, as illustrated in Figure 4-8.
  2. Set the headphone volume and the audio output levels from –76 dB to 0 dB, and set the desired mute.

To set the record volume:

  1. Open the Audio MIDI Settings options (Application→Utility→Set Audio MIDI), as illustrated in Figure 4-9. Alternatively, open the Input tab of the Sound options, as illustrated in Figure 4-7.
  2. Set the recording level from –12 dB to +30 dB, and set the desired mute.
GUID-72CAF1CC-FCD8-4421-80A8-E22F905888D7-low.gifFigure 3-9 Audio Midi Setting Window (Mac OS)

To set the microphone sidetone:

The volume setting of the microphone sidetone is controlled by the individual application software on the Mac. For example, Audio Recording using QuickTime® (as shown in Figure 4-10) sets the microphone volume for sidetone from –76dB to 0 dB.

GUID-C3B77971-3D29-4272-996A-0FFABC4B7D8B-low.gifFigure 3-10 QuickTime Audio Recording Controls

After this process is complete, the system volume setting for each component is maintained even if EVM is plugged in/out.