marco/qmk
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[Docs] Fix tables in Audio driver document (#17780)

Browse Source
This commit is contained in:
Drashna Jaelre 2022-07-24 16:00:51 -07:00 committed by GitHub
parent 00c02e3bd8
commit c0763363db
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
docs/audio_driver.md
View File

@ -113,15 +113,17 @@ Additionally, in the board config, you'll want to make changes to enable the DAC
### DAC Config ### DAC Config
| Define | Defaults | Description --------------------------------------------------------------------------------------------- | | Define | Defaults | Description |
| -------------------------------- | -------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `AUDIO_DAC_SAMPLE_MAX` | `4095U` | Highest value allowed. Lower value means lower volume. And 4095U is the upper limit, since this is limited to a 12 bit value. Only effects non-pregenerated samples. | | `AUDIO_DAC_SAMPLE_MAX` | `4095U` | Highest value allowed. Lower value means lower volume. And 4095U is the upper limit, since this is limited to a 12 bit value. Only effects non-pregenerated samples. |
| `AUDIO_DAC_OFF_VALUE` | `AUDIO_DAC_SAMPLE_MAX / 2` | The value of the DAC when notplaying anything. Some setups may require a high (`AUDIO_DAC_SAMPLE_MAX`) or low (`0`) value here. | | `AUDIO_DAC_OFF_VALUE` | `AUDIO_DAC_SAMPLE_MAX / 2` | The value of the DAC when notplaying anything. Some setups may require a high (`AUDIO_DAC_SAMPLE_MAX`) or low (`0`) value here. |
| `AUDIO_MAX_SIMULTANEOUS_TONES` | __see next table__ | The number of tones that can be played simultaneously. A value that is too high may freeze the controller or glitch out when too many tones are being played. | | `AUDIO_MAX_SIMULTANEOUS_TONES` | __see next table__ | The number of tones that can be played simultaneously. A value that is too high may freeze the controller or glitch out when too many tones are being played. |
| `AUDIO_DAC_SAMPLE_RATE` | __see next table__ | Effective bit rate of the DAC (in hertz), higher limits simultaneous tones, and lower sacrifices quality. | | `AUDIO_DAC_SAMPLE_RATE` | __see next table__ | Effective bit rate of the DAC (in hertz), higher limits simultaneous tones, and lower sacrifices quality. |
There are a number of predefined quality settings that you can use, with "sane minimum" being the default. You can use custom values by simply defining the sample rate and number of simultaneous tones, instead of using one of the listed presets. There are a number of predefined quality settings that you can use, with "sane minimum" being the default. You can use custom values by simply defining the sample rate and number of simultaneous tones, instead of using one of the listed presets.
| Define | Sample Rate | Simultaneous tones | | Define | Sample Rate | Simultaneous tones |
| --------------------------------- | ----------- | ------------------- |
| `AUDIO_DAC_QUALITY_VERY_LOW` | `11025U` | `8` | | `AUDIO_DAC_QUALITY_VERY_LOW` | `11025U` | `8` |
| `AUDIO_DAC_QUALITY_LOW` | `22040U` | `4` | | `AUDIO_DAC_QUALITY_LOW` | `22040U` | `4` |
| `AUDIO_DAC_QUALITY_HIGH` | `44100U` | `2` | | `AUDIO_DAC_QUALITY_HIGH` | `44100U` | `2` |