Hello !!!
Is there any option that we can change the pitch of an audio file in real time ??
I mean
Can we make changes in the operation of DF Player with the help of code to get the a varied or desired Pitch or frequency of an audio file ?
If not then,
Is there any option to convert the pitch of sound obtained externally from the line out of the DF Player or any Player in real time with help of an MCU like an arduino or any other ready made board ??
Please help me in getting the info
Dfplayer mini's volume is adjustable: DFPlayer Mini Mp3 Player - DFRobot Wiki
Can't say about pitch and freq.
You should ask DF Robot that - it's their product!
The library link is on their page:
Ya it ranges 0 to 30 
Hm have to check for infos . .
Any idea about mute command ?????
you could build an external circuit buffering a few audio samples out and then messing with the samples before sending the out
Ya I tried there a lot but no sign of such a feature
I am still trying for it
Sir is there any option that we can switch between the memory card and usb port if we wish to use ??
How to make it within the code ??
which board are you using ?
You can find also audio libraires such as GitHub - pschatzmann/arduino-audio-tools: Arduino Audio Tools (a powerful Audio library not only for Arduino)
Teensy products are also good and you can check the Teensy Audio Library, high quality sound processing in Arduino sketches on Teensy 3.1
O o o I see
ATTiny . . .
Right now I have MEGA and UNO
I am not using it for any audio functioning , just I have
OK hv to check !!
Sir is there any command to switch between USB and SD Card option for DF PLayer ??
I am not finding the right one actually !!
Just blah blah things and explanations are there but not the required perfect one !!
➜ answer this
I use to operate with pause/play action with help of this configuration but sometimes pause button starts acting for next audio file button and switching songs one by one at every press
And some times work normally
Is there any connection or wiring or hardware issue ?
Arduino MEGA . . .
!!!!!!
I meant which DF Player ? the basic module does not have USB. So I don't see what you mean here
OK - so what do you mean by "switch between USB and SD Card" ? there is just the SD card
Ya a connectivity option is there on the board for USB port to connect externally
I just want to switch between built in SD Card and the USB
OK - I've never used it.
I saw a discussion like this How to access files from a USB stick? Any examples? · Issue #434 · felis/USB_Host_Shield_2.0 · GitHub
The DFplayer mini has a USB port that can operate as a Host (to read files from a USB stick) or can also operate as a device, so that the PC can access the files from the SD card (and there is also a possibility to use the DFplayer Mini as sound card, but I believe the "clones" do not have this support)
What does that actually mean ??
We can connect that USB line to PC USB line to load or copy data directly to SD Card through this or it is something else ??
AS I said, I never tried, indeed seems to make the module basically a thumb drive (SD card reader)
