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| * Audio Peak-meter or CPU-load => 1 or 2 small horizontal bars on the top right. | | * Audio Peak-meter or CPU-load => 1 or 2 small horizontal bars on the top right. |
− | * MIDI-IN => '''Blue M''' flag | + | * MIDI-IN => '''Blue "m"''' flag |
| * Xrun => '''Red Warning''' flag | | * Xrun => '''Red Warning''' flag |
| * Under-voltage => '''Red Lightning''' flag | | * Under-voltage => '''Red Lightning''' flag |
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| * The red segment covers the range -3dBFS to 0dBFS. | | * The red segment covers the range -3dBFS to 0dBFS. |
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− | There are independent meters for left and right channels which monitor the system output, i.e. the mix of audio that feeds the Zynthian output. Level decays with a logarithmic rule, taking one second to decay to -200dBFS so will decay to -50dBFS (the displayed range) in about quarter of a second. Peaks are displayed instantly, i.e. the attack of the meter is immediate(*). The peak hold bar remains for two seconds or until a higher peak is reached. | + | There are independent meters for left and right channels which monitor the system output, i.e. the mix of audio that feeds the Zynthian output. Level decays with a logarithmic rule, taking one second to decay to -200dBFS so will decay to -50dBFS (the displayed range) in about quarter of a second. Peaks are displayed instantly, i.e. the attack of the meter is immediate (*). The peak hold bar remains for two seconds or until a higher peak is reached. |
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| (*) Meter is updated 5 times per second so there can be 200 ms delay in peak being displayed. | | (*) Meter is updated 5 times per second so there can be 200 ms delay in peak being displayed. |
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− | Alternately, CPU-load bar can be enabled from webconf, replacing the Audio Peak-meter. The CPU-load bar shows the CPU usage as calculated by the Jack Audio Server: | + | Alternately, the "CPU-load" bar can be enabled from webconf, replacing the Audio Peak-meter. The CPU-load bar shows the CPU usage as calculated by the Jack Audio Server: |
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| This is a running average of the time it takes to execute a full process cycle for all clients as a percentage of the real time available per cycle determined by the buffer size and sample rate. | | This is a running average of the time it takes to execute a full process cycle for all clients as a percentage of the real time available per cycle determined by the buffer size and sample rate. |
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| ===The Flags=== | | ===The Flags=== |
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− | * The '''Blue M''' flag is shown when MIDI messages pass thru the MIDI router. Not all messages are detected. Only CC, Program Change and Note On/Off. | + | * The '''Blue "m"''' flag is shown when MIDI messages are received. |
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− | * The '''Red Warning''' flag is shown when there are Xruns. You should hear clicks and pops too. | + | * The '''Red Warning Triangle''' flag is shown when there are Xruns. If many, you should hear clicks and pops too. |
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| * When the '''Red Lightning''' or '''Red Thermometer''' flag is shown, your zynthian is working in a degraded state, with the CPU frequency capped to 600-800 MHz, trying to stabilize the system and avoid a system crash. You shouldn't see any of them and if you do so, you should consider looking for a better power source (under-voltage) or using a heat sink (over-temperature). | | * When the '''Red Lightning''' or '''Red Thermometer''' flag is shown, your zynthian is working in a degraded state, with the CPU frequency capped to 600-800 MHz, trying to stabilize the system and avoid a system crash. You shouldn't see any of them and if you do so, you should consider looking for a better power source (under-voltage) or using a heat sink (over-temperature). |