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AMBEServer/99-ftdi-latency.rules at main · DVSwitch/AMBEServer · GitHub
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DVSwitch
AMBEServer
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# Set FTDI USB-serial latency timer to 1ms for AMBE3000 vocoder dongles.
# This eliminates the 16ms default that causes audio decode latency.
# Copyright (C) 2026 DVSwitch KaT
ACTION=="add", SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{bInterfaceNumber}=="0", RUN+="/bin/sh -c 'echo 1 > /sys/bus/usb-serial/devices/%k/latency_timer'"
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