<![CDATA[How do you change volume on Core2]]>Under "Speaker" in UIFLOW there is the ability to play wave files but the next step is to obviously change volume. Does anyone know how to change volume on a Core2 in UIFLOW or Python?

]]>https://community.m5stack.com/topic/2845/how-do-you-change-volume-on-core2RSS for NodeWed, 29 Apr 2026 11:29:24 GMTThu, 28 Jan 2021 12:54:46 GMT60<![CDATA[Reply to How do you change volume on Core2 on Sat, 30 Jan 2021 17:16:45 GMT]]>@bobolink FYI to myself
If you have an engineering background--part of Micropython--
module 'dba: calculate dBA (A-weighting decibels) from an input stream of digital audio samples
module 'i2stools': function to efficiently extract sample data from a buffer filled by I2S
Signal processing (logical shifts--fractional multiply) on the PCM samples instead of hardware volume control gets the job done also.

]]>https://community.m5stack.com/post/12189https://community.m5stack.com/post/12189Sat, 30 Jan 2021 17:16:45 GMT<![CDATA[Reply to How do you change volume on Core2 on Fri, 29 Jan 2021 13:00:53 GMT]]>@zontex OK thanks for the reply. I guess you could set the volume of the .WAV files in the pc program “Audacity”.
But user volume control would be nice.

]]>https://community.m5stack.com/post/12156https://community.m5stack.com/post/12156Fri, 29 Jan 2021 13:00:53 GMT<![CDATA[Reply to How do you change volume on Core2 on Fri, 29 Jan 2021 04:01:45 GMT]]>@se Hi, This is core2 not grey, core2 doesn't support for now due to some bug we have to resolve that makes background noise. if you try normal core it will work just fine.

@bobolink currently we don't support C/C++ API for it.

]]>https://community.m5stack.com/post/12138https://community.m5stack.com/post/12138Fri, 29 Jan 2021 04:01:45 GMT<![CDATA[Reply to How do you change volume on Core2 on Thu, 28 Jan 2021 17:21:12 GMT]]>On the Grey Core UIFLOW there is a volume command but on under the CORE2 Beta UIFLOW I cannot find one. Here is a screenshot. Let me know what you think. Thanks 0_1611854426492_image_2021-01-28_122026.png

]]>https://community.m5stack.com/post/12124https://community.m5stack.com/post/12124Thu, 28 Jan 2021 17:21:12 GMT<![CDATA[Reply to How do you change volume on Core2 on Thu, 28 Jan 2021 15:52:41 GMT]]>Is there a C/C++ way to set volume?

]]>https://community.m5stack.com/post/12121https://community.m5stack.com/post/12121Thu, 28 Jan 2021 15:52:41 GMT<![CDATA[Reply to How do you change volume on Core2 on Thu, 28 Jan 2021 15:08:52 GMT]]>Hello, under hardware -> speaker -> there is a block called "setVolume" that you can use to change the volume of your Core device :)

]]>https://community.m5stack.com/post/12108https://community.m5stack.com/post/12108Thu, 28 Jan 2021 15:08:52 GMT