What is the difference between Bluetooth MIDI and Bluetooth audio or Bluetooth audio?
First of all, there are three concepts here, that is, what is Bluetooth?What is Bluetooth MIDI?What is Bluetooth audio?
1. What is Bluetooth, this does not need to be repeated, everyone understands.
2. What is Bluetooth MIDI, the person who generally asks this question basically understands that Bluetooth MIDI is actually expanded to wireless connection on the basis of the standard MIDI protocol, and the original MIDI is transmitted by USB, and now it is replaced by Bluetooth.
3. What is Bluetooth audio, this is even simpler, Bluetooth speaker or Bluetooth headset, everyone has been in contact with it, this is the thing, connect to the audio of the mobile phone.
Here are some examples of electric piano products to explain their respective uses.
Bluetooth MIDI, in fact, was promoted and applied by Apple Inc., with the aim of achieving a wireless connection between the host and the device with the help of Bluetooth Low Energy. The standard of the protocol is also set by Apple. At present, it is also fully applied to the Android platform.
The core is that the mobile phone sends the "Bluetooth MIDI code" through Bluetooth, gives the sound source chip, and outputs the sound after decoding.
There are actually many supported apps, such as: "Bubble Piano", "Let's Play the Piano", and "Bug Piano". The simplest operation is the bubble piano.
The one with the most functions and the most music is the bug piano app. There are Android versions and iOS versions
The following describes the use process of Bluetooth MIDI: Pay attention to the mobile phone, you need to turn on the Bluetooth and location permissions.
As for Bluetooth audio, you can understand the electric piano as a "Bluetooth speaker", and the mobile phone directly sends Bluetooth audio data.
Direct decoding of the Bluetooth module in the electric piano**,Note that it has nothing to do with the "sound source chip".
1. BT401 Bluetooth module supports Bluetooth 50, dual-mode, standard Bluetooth MIDI protocol, realize MIDI data and mobile phone transmission, through the serial port.
2. Convert the MIDI signal into a signal that can be recognized by the APP through the serial port, and transmit it to the APP through the Bluetooth protocol.
3. Support Bluetooth audio, that is, connect to the mobile phone**mobile phone**. Supports DAC output and I2S host output.
4. Bluetooth protocol: Bluetooth 50Support HFP A2DP **RCP HSP G**DP IOP SPP BLE at a distance of 10m
5. Support Bluetooth MIDI service: standby is 20mA, ** is 30mA