superdragon
Head-Fier
- Joined
- Apr 4, 2014
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I paired and connected homemade Bluetooth speakers to my Microsoft Surface Pro 4. I have the amplifier dials set to a comfortable position and further control the volume with the tablet's volume interface. I noticed early on that with certain minimum volume increments of 1, the volume increases a lot, and with most others, the change is very small; sometimes not noticeable. For example, 46 to 47, and most noticeable 53 to 54. I got a decibel meter app on my iPhone and proved what my ears were telling me. Here are the results with the iPhone standing at speaker lever, equidistant from the speakers:
First 30 seconds of "Shape of Things to Come" by Audioslave, streaming from Spotify Premium. Settings - Streaming Quality - Very High. Volume Level - Normal. The separate Spotify volume control was maximized.
Tablet volume at 52: 77.1 decibels
Tablet volume at 53: 77.3 decibels
Tablet volume at 54: 82.7 decibels
I repeated the experiment using the built in tablet speakers with my iPhone standing in front of the tablet, and the results don't scale the same:
Tablet volume at 52: 64.7 decibels
Tablet volume at 53: 65.3 decibels
Tablet volume at 54: 65.7 decibels
I'm very happy with my homemade project and aren't asking for anything to be fixed. The uneven increments don't bother me. I'm writing as a matter of scientific curiosity. I'm having a lot of fun with these electronic projects and would like an explanation as to the uneven amplification.
I hope everybody and their families are healthy during these crazy times.
Thanks
First 30 seconds of "Shape of Things to Come" by Audioslave, streaming from Spotify Premium. Settings - Streaming Quality - Very High. Volume Level - Normal. The separate Spotify volume control was maximized.
Tablet volume at 52: 77.1 decibels
Tablet volume at 53: 77.3 decibels
Tablet volume at 54: 82.7 decibels
I repeated the experiment using the built in tablet speakers with my iPhone standing in front of the tablet, and the results don't scale the same:
Tablet volume at 52: 64.7 decibels
Tablet volume at 53: 65.3 decibels
Tablet volume at 54: 65.7 decibels
I'm very happy with my homemade project and aren't asking for anything to be fixed. The uneven increments don't bother me. I'm writing as a matter of scientific curiosity. I'm having a lot of fun with these electronic projects and would like an explanation as to the uneven amplification.
I hope everybody and their families are healthy during these crazy times.
Thanks
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