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audiovolume [2019/02/27 15:32]
sq3plx
audiovolume [2019/02/27 15:45]
sq3plx
Line 7: Line 7:
  
 OK, so we are only going to touch options which are important for us, these are: OK, so we are only going to touch options which are important for us, these are:
-  * **"​Lineout volu" (Lineout volume control)** - this controls the audio output signal level (from ULARI to radio). Lowest values result in a signal of about few milivolts (do not use levels 0 and 3 as they are really no signal according to my oscilloscope). Highest values result in a signal of more than 1Vpp (TODO: check exact signal amplitudes for each level).+  * **"​Lineout volu" (Lineout volume control)** - this controls the audio output signal level (from ULARI to radio). Lowest values result in a signal of about few milivolts (do not use levels 0 and 3 as they are really no signal according to my oscilloscope). Highest values result in a signal of more than 1Vpp.
   * **"ADC input ga" (ADC input gain ctrl)** - this controls the audio input amplification (from radio to ULARI). Do not set it too high or your audio signal may be clipped and decoding will work very poor (TODO: check exact signal amplitudes for each level).   * **"ADC input ga" (ADC input gain ctrl)** - this controls the audio input amplification (from radio to ULARI). Do not set it too high or your audio signal may be clipped and decoding will work very poor (TODO: check exact signal amplitudes for each level).
   * **"​MIC1 boost A" (MIC1 boost AMP gain control)** - this also controls the audio input amplification (different stage), but this value is hardcoded in kernel settings and will restore every time to the same value, better do not touch!   * **"​MIC1 boost A" (MIC1 boost AMP gain control)** - this also controls the audio input amplification (different stage), but this value is hardcoded in kernel settings and will restore every time to the same value, better do not touch!
  
-Audio output levels for different Lineout volume control values:+=== Audio output levels for different Lineout volume control values: ​===
   * 10 - 30 mV   * 10 - 30 mV
   * 23 - 52 mV   * 23 - 52 mV
audiovolume.txt ยท Last modified: 2021/06/15 15:31 by sq3plx