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Author: yzyhk904

README.md

@@ -2,7 +2,7 @@
 
 This module has been developed for casual users to overide re-sampling parameters of AudioFlinger (the system-wide mixer) in my other modules (["Audio misc. settings"](https://github.com/Magisk-Modules-Alt-Repo/audio-misc-settings) and ["Hifi Maximizer"](https://github.com/yzyhk904/hifi-maximizer-mod)) so as to significantly improve audio quality of LDAC Bluetooth earphones and DAC's under $30 (probably) especially when replaying 48 kHz tracks up-sampled over or equal to 96 kHz & 24 or 32 bits by AudioFlinger, but also the quality of internal speakers and a 3.5 mm jack receiving 48 kHz & 24 or 32 bits audio data (except 48 kHz & 16 bits) re-sampled (i.e., low-pass filtered) by AudioFlinger. If you are an audiophile expert, please use "extras/change-resampling-quality.sh" in ["USB SampleRate Changer"](https://github.com/yzyhk904/USB_SampleRate_Changer) which can change the parameters on the fly flexibly.
 
-By the way, although most people might wonder how this module improve the audio quality of such devices, it is accomplished by very long filter length re-sampling near ideally (almost without pre-echo, ringing (post-echo) and aliasing noise) cutting off a frequency zone from just above 20 kHz filled with ultrasonic noise (although most people believe part of natural sound) generated by high frequency dithering (also called delta-sigma modulation, noise-shaping, super bit-mapping, etc.) at recording time and even 16 bits noise-shaping rounding output time (e.g., Opus decoders), and deteriorating audible sound like a smokescreen by intermodulation significantly amplified by large amplification non-linearity of LDAC Bluetooth earphones and DAC's under $30. Furthermore this can be considered to be a kind of decimation filtering from 48 kHz & 16 bits samples (having dynamic range larger than usual 16 bits limit with ultrasonic noise) to 40 kHz & 24 or 32 bits ones except the ultrasonic noise by hight frequency dithering. So it has little effect when using AAC and SBC codecs which transmit audio data by 44.1 kHz & 16 bits. 
+By the way, although most people might wonder how this module improve the audio quality of such devices, it is accomplished by very long filter length re-sampling near ideally (almost without pre-echo, ringing (post-echo) and aliasing noise) cutting off a frequency zone from just above 20 kHz filled with ultrasonic noise (although most people believe part of natural sound) generated by high frequency dithering (also called delta-sigma modulation, noise-shaping, super bit-mapping, etc.) at recording time and even 16 bits noise-shaping rounding output time (e.g., Opus decoders), and deteriorating audible sound like a thin veiling smokescreen by intermodulation significantly amplified by large amplification non-linearity of LDAC Bluetooth earphones and DAC's under $30. Furthermore this can be considered to be a kind of decimation filtering from 48 kHz & 16 bits samples (having dynamic range larger than usual 16 bits limit with ultrasonic noise) to 40 kHz & 24 or 32 bits ones except the ultrasonic noise by hight frequency dithering. So it has little effect when using AAC and SBC codecs which transmit audio data by 44.1 kHz & 16 bits. 
 
 However, as the noise has a merit adding mellowness into audible sound in the case of none cheap DAC's having very small amplification non-linearity, please use this module only when using LDAC Bluetooth earphones (any devices, as far as I know) and DAC's under $30 (typically using DAC chip CX31993, ALC5686, KT0210, etc.).
 

module.prop

@@ -3,4 +3,4 @@ name=Resampling for cheapies
 version=v2.0.0
 versionCode=2000
 author=zyhk
-description=For avoiding "cheapie sound" distortion like a smokescreen specific to LDAC Bluetooth earphones and DAC's under $30 (probably), this module sets near ideal re-sampling which involves special digital filtering at the system-wide mixer.
+description=For avoiding "cheapie sound" distortion like a thin veiling smokescreen specific to LDAC Bluetooth earphones and DAC's under $30 (probably), this module sets near ideal re-sampling which involves special digital filtering at the system-wide mixer.