#1 2016-06-30 19:47:43

CASREP

New Member

Registered: 2016-05-27

Posts: 4

Volume Up/Down Rate Discrepancy Between Volti and PulseMixer

Raising and lowering the volume in Volti (up/down keys) doesn't match what's shown in PulseMixer. Volti reports the volume lowering at a linear rate (set to 5, ATM), but Pulse reports a varying drop of 0.75 or 1.5 dB. Percentage-wise, PulseMixer appears to be the accurate one whereas Volti would report volume at 50%, but it's actually at 23%.

Has anyone else seen this issue? What further information can I provide?

Edit:
Yes. It's logarithmic, but that still doesn't account for the discrepancy. Extra content from amixer below.

First push - dropped 16%:

Front Left: Playback 55142 [84%] [on]
Front Right: Playback 55142 [84%] [on]

Second push - dropped 15%:

Front Left: Playback 45080 [69%] [on]
Front Right: Playback 45080 [69%] [on]

Third push - dropped 11%:

Front Left: Playback 37930 [58%] [on]
Front Right: Playback 37930 [58%] [on]

Volti reports a drop in a linear fashion, but that's not what's actually happening. The first drop is precipitous with subsequent drop happening at a diminishing rate. By the time Volti reports 60%, amixer and pulsemixer show 23%. At this point there is no noticeable audio from the speakers.

Last edited by CASREP (2016-06-30 21:52:44)

Head_on_a_Stick

Member

From: London

Registered: 2015-09-29

Posts: 9,063

Website

Re: Volume Up/Down Rate Discrepancy Between Volti and PulseMixer

Volti reports the volume lowering at a linear rate (set to 5, ATM), but Pulse reports a varying drop of 0.75 or 1.5 dB.

Is this not the expected behaviour?

The decibel scale is logarithmic.

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CASREP

New Member

Registered: 2016-05-27

Posts: 4

Re: Volume Up/Down Rate Discrepancy Between Volti and PulseMixer

Volti reports the volume lowering at a linear rate (set to 5, ATM), but Pulse reports a varying drop of 0.75 or 1.5 dB.

Is this not the expected behaviour?

The decibel scale is logarithmic.

Yes. It's logarithmic, but that still doesn't account for the discrepancy. I'm going to edit the original post with the extra content from amixer below.

First push - dropped 16%:

Front Left: Playback 55142 [84%] [on]
Front Right: Playback 55142 [84%] [on]

Second push - dropped 15%:

Front Left: Playback 45080 [69%] [on]
Front Right: Playback 45080 [69%] [on]

Third push - dropped 11%:

Front Left: Playback 37930 [58%] [on]
Front Right: Playback 37930 [58%] [on]

Volti reports a drop in a linear fashion, but that's not what's actually happening. The first drop is precipitous with subsequent drop happening at a diminishing rate. By the time Volti reports 60%, amixer and pulsemixer show 23%. At this point there is no noticeable audio from the speakers.