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audiovolume
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audiovolume [2019/02/15 02:18] sq3plx |
audiovolume [2019/02/27 15:32] sq3plx |
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| * **"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! | ||
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| + | === Audio output levels for different Lineout volume control values: === | ||
| + | * 10 - 30 mV | ||
| + | * 23 - 52 mV | ||
| + | * 32 - 84 mV | ||
| + | * 42 - 134 mV | ||
| + | * 52 - 218 mV | ||
| + | * 61 - 364 mV | ||
| + | * 71 - 592 mV | ||
| + | * 81 - 1000 mV | ||
| + | * 90 - 1620 mV | ||
| + | * 100 - 2740 mV | ||
| Every change will immediately be visible in real analog level. After setting these values to desired levels we can save them to nonvolatile memory using command: | Every change will immediately be visible in real analog level. After setting these values to desired levels we can save them to nonvolatile memory using command: | ||
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| >Different radios provide different audio levels (from radio to ULARI). Especially, when you are using an audio signal from speaker output and your radio has a volume knob, then do not set the knob above 1/3 of the scale because this signal level is often good enough and higher levels can cause signal clipping. | >Different radios provide different audio levels (from radio to ULARI). Especially, when you are using an audio signal from speaker output and your radio has a volume knob, then do not set the knob above 1/3 of the scale because this signal level is often good enough and higher levels can cause signal clipping. | ||
| + | |||
| + | === What's next === | ||
| + | |||
| + | Now we need to take a look at [[config_manager|Ulari-manager configuration]]. | ||
audiovolume.txt ยท Last modified: 2021/06/15 15:31 by sq3plx
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