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Added an info for "Resampling for cheapies"
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yzyhk904 authored Jun 10, 2024
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8 changes: 4 additions & 4 deletions README.md
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<li>Volume steps<br/>
change the number of steps in media volume to 100 steps (0.4~0.7dB per step).</li>
<li>Resampling quality<br/>
change AudioFlinger's resampling quality from the AOSP standard one (stop band attenuation 90dB & cut off 100% of the Nyquist frequency & half filter length 32) to a very mastering quality (179dB & 99% & 408, 167dB & 106% & 368 or 160db & 91% & 480 (or 320 for low performance devices), i.e., no resampling distortion in a real sense even though the 160dB targeted attenuation is not accomplished in the AOSP implementation).</li>
change AudioFlinger's resampling quality from the AOSP standard one (stop band attenuation 90dB & cut off 100% of the Nyquist frequency & half filter length 32) to a very mastering quality (179dB & 99% & 408, 167dB & 106% & 368 or 160db & 91% & 480 (or 320 for low performance devices), i.e., no resampling distortion in a real sense even though the 160dB targeted attenuation is not accomplished in the AOSP implementation). However, use <a href="https://github.com/Magisk-Modules-Alt-Repo/resampling-for-cheapies">"Resampling for cheapies"</a> to override these resampling settings if you intend to use DAC's under $30 or LDAC BT devices.</li>
<li>Adjust a USB transfer period of the USB HAL driver (not the Qcomm hardware offload USB driver, but including ones of Tensor and MTK devices)<br/>
for directly reducing the jitter of a PLL in a DAC (even in an asynchronous mode); Use <a href="https://github.com/yzyhk904/USB_SampleRate_Changer">"USB_SampleRate_Changer"</a> to switch from the usual hardware offload USB driver to the USB HAL one.</li>
<li>Set a higher bitrate limit of bluetooth codec SBC (dual channel mode)<br/>
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| ---: | ---: | ---: | ---: | ---- |
| 90 | 32 | 100 | | AOSP default |
| This mod. parameters: | - | - | - | - |
| 160 | 320 | 91 | | Low Performance devices under A12 |
| 160 | 480 | 91 | | High Performance devices under A12 |
| 159 | 320 | 92 | | Low Performance devices under A12 |
| 159 | 480 | 92 | | High Performance devices under A12 |
| 165 | 360 | | 104 | Low Performance devices for A12 and later |
| 179 | 408 | | 99 | High Performance devices for A12 and later, and Galaxy S4 |
| External examples: | - | - | - | - |
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## DISCLAIMER

* I am not responsible for any damage that may occur to your device, so it is your own choice to attempt this module.
* I am not responsible for any damage that may occur to your device, so it is your own choice whether to attempt this module or not.

##

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