Hello everyone! I'm trying to make a pitch shift in Teensy LC -- similar/same to the ones on modern electric pianos, where a midi note gets "bent". Teensy is going to send a Midi note through USB HID and a button is going to trigger the Midi note and slider for pitch shift. I have no idea where to start with the pitch shift, as I am not familiar with C++ / Arduino. Help?
How to Pitch Shift?
- Thread starter SMJLeo
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oddson
Well-known member
You mean 'pitch bend' as 'pitch shift' refers to altering the pitch of a signal rather than changing the rate of an oscillator via MIDI or control voltage.
sendPitchBend is a message in both the usb and hardware MIDI libraries.
There have been a few threads on the topic recently... search "pitchbend"
I didn't find a decent general reference for you but this post has some additional details and links:
https://forum.pjrc.com/threads/44896-sending-Pitch-bend-doens-t-work?p=147103&viewfull=1#post147103
sendPitchBend is a message in both the usb and hardware MIDI libraries.
There have been a few threads on the topic recently... search "pitchbend"
I didn't find a decent general reference for you but this post has some additional details and links:
https://forum.pjrc.com/threads/44896-sending-Pitch-bend-doens-t-work?p=147103&viewfull=1#post147103
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oddson
Well-known member
http://sites.uci.edu/camp2014/2014/04/30/managing-midi-pitchbend-messages/
This explains the general details.... you just need to scale the reading then send a stabilized output.
But first you may want to try a basic 127 value CC pot controller to learn the ropes.
This explains the general details.... you just need to scale the reading then send a stabilized output.
But first you may want to try a basic 127 value CC pot controller to learn the ropes.
Last edited:
PaulStoffregen
Well-known member
Before you start writing code, please at least try using the examples. In Arduino, click File > Examples > Teensy > USB_MIDI to open them. Pick one and upload it to your Teensy. Even if you don't care about note on/off messages, please at least use these to make sure the USB MIDI is working with your PC. The examples can also really help you build a little experience with adapting the code.
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