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TwoToneDetect is a Windows program that interfaces with a radio receiver or scanner. It uses the computer's sound card to listen to the received audio and detect two-tone sequential paging sequences. This type of paging is commonly used for fire department alerting. Upon detecting known two-tone pages, the program will record dispatch audio and email that audio to a specified email address. Multiple tone sets and email addresses are supported.

Program Features:

Decodes virtually unlimited numbers of user-specified two-tone and long-tone pages
Handles "stacked pages"
Upon detecting a valid tone set, records user-specified length of audio and emails it to a specified address as a .mp3 or .amr file attachment (requires user download of ffmpeg.exe)
Near real-time playback of recorded audio, providing "pager-like" functionality with scanner and PC
Can be used to trigger external programs or scripts upon tone detection
Audio frequency counter to assist in finding tone frequencies with PC sound card
Provides limited serial port control of BCD396T and similar scanners to provide fire tone out functionality on multiple frequencies at the same time by skipping transmissions that are not valid tones