I2s rx how to determine proper audio

[aqildad-create]

How to determine if i have a signal on i2s so to send data to ESPNow ACCORDNGLY . i want to avoid sending empty data

You do not have example for VolumeOutput . Pls guide

[pschatzmann]

You can use the VolumeOutput to determine if you have a signal and based on this, switch the forwarding to the ESPNow on or off.

                                      -> VolumeOutput   
I2S - copy -> MultiOutput   
                                      -> OnOffOutput -> ESPNowStream

VolumeOutput is just like any output destination, so no surprise here.
Check the class documentation for the methods !

[bfulham]

does the OnOffOutput still exist? I cant seem to find any reference to it

[bfulham]

did some more digging and found you commented it out in feb then removed it all together in march? did it get replaced with an alternative way of doing this?

[pschatzmann]

Not sure why it has been removed: Most likely because the same thing can be achieved with a VolumeStream: setting the volume to 0.0 stops the output, setting it to 1.0 activates it again (to it's maximum)

[pschatzmann]

I think in your case, it would be better to work just with your bool variable uhf to switch things on and off.
So remove VolumeStream UHFOnOff(kit) and VolumeStream BLEOnOff(kit);

And in your callback use if (uhf) ble.write(data, length); and in your loop use if (!uhf) copy_UHF.copy();

[bfulham]

I hadn’t thought about using that callback, I’ll try that, I originally was using two copy’s and changed which one was copying but that had performance issues

[bfulham]

is there another way to get the ausio to the multiOutput that isnt using the streamcopy? implementing this I still have to have a streamcopy in the loop that isnt covered by the if (uhf) as it needs to get the audio to the volumeOutput to know when to change the uhf variable, meaning the uhf audio work perfectly but the bluetooth audio still stutters because of the copy, it has to look like this:

AudioBoardStream -> StreamCopy1 -> MultiOutput
MultiOutput -> VolumeOutput
MultiOutput -> streamcopy2 -> AudioBoardStream

streamcopy1 is always running while 2 gets turned on and off with uhf

[pschatzmann]

You can simple reconfigure the copy to switch between MultiOutput and VolumeOutput as copy destination.

[bfulham]

you are a life saver, this works perfectly, once i finish the project im going to write up a show and tell for it