text2flac

A standalone desktop application for text-to-speech synthesis with WAV/FLAC export. Uses native OS speech capabilities (macOS say, Windows SAPI).

Features

• Text input — enter any text to synthesize
• Language selection — filtered from available system voices
• Voice selection — pick any installed voice
• Speed control — 0.25x to 3.0x
• Pitch control — -10 to +10
• Preview — play through speakers before exporting
• Export — save as WAV or FLAC

Build

Requires Go 1.21+ and platform-specific dependencies for Fyne:

macOS

# Install Xcode command-line tools if not already present
xcode-select --install

go build -o builds/text2flac .

Windows

Use tds-gcc as compiler for CGO. MinGW has some issues with fyne compilation.

go build -ldflags="-H windowsgui" -o builds/text2flac.exe .

Linux

# Install TTS dependencies (choose one):
# Ubuntu/Debian:
sudo apt-get install golang libxcursor-dev libxrandr-dev libxinerama-dev libxi-dev espeak festival libxxf86vm-dev

# Fedora/RHEL/CentOS:
sudo dnf install golang libXcursor-devel libXrandr-devel libXinerama-devel libXi-devel espeak festival libXxf86vm-devel

# Arch Linux:
sudo pacman -S golang libxcursor libxrandr libxinerama libxi espeak festival libxxf86vm

# Build the application
go build -o builds/text2flac .

Run

./text2flac        # macOS/Linux
text2flac.exe      # Windows

Cross-platform notes

Feature	macOS	Windows	Linux
TTS engine	say command	SAPI via System.Speech.Synthesis	espeak/festival
Voice listing	say -v ?	PowerShell + SAPI	espeak --voices
WAV output	Native (say --file-format=WAVE)	Native (SetOutputToWaveFile)	Native (espeak -w)
FLAC output	WAV → FLAC conversion in Go	WAV → FLAC conversion in Go	WAV → FLAC conversion in Go
Pitch control	Embedded speech commands	SSML prosody	espeak pitch parameter

License AKA You cannot sell it

This project is released under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License. What it means to you in just four words?

You cannot sell it

You can share and adapt it freely. I cannot revoke these freedoms as long as you follow the license terms, specifically:

• Attribution - you must give appropriate credit
• Non-Commercial - you cannot profit from it
• ShareAlike - if you change something, you must use the same license terms

Full license text can be found at https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode

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