This Stuttering Device repeats your voice after afew millisecondS So that you hear your voice whether in pitch (Different voice TONE) or in normal way. The patient will here his/her voice so that speaker can be more influent.
This firmware can be connected to bluetooth 4.2 earbuds for version 5 contact Kabitvar inside gmail.
esptool.py esp32 -p /dev/ttyUSB0 -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 4MB 0x1000 bootloader/bootloader.bin 0x10000 a2dp_source.bin 0x8000 partition_table/partition-table.bin 0xd000 ota_data_initial.bin
This device need a microphone with amplifier (Max4466 Pin33), a ESP32 module with BLE and an extra 5volt adaptor (or 3.3V battery) for connecting to microphone using a regulator. The device will automatically connect to the nearest handsfree with a2dp. This single prompt command form of esp32 firmware device to stop stuttering is free, In addition you can order a firmware for "Lilygo TTGO-Twatch" for additional price.