Soundscope — a CLI audio file analyzer tool.

Soundscope is a crossplatform CLI tool for analyzing audio files.

✨ Features

• 🎤 Analysis of both audio files and microphone input in real-time.
• 📊 FFT Spectrum — view the frequency distribution.
• 📉 Waveform Display — see the amplitude over time.
• 🔊 LUFS Metering and True Peak — measure loudness precisely.
• 🎨 Customizable Theme — change the color scheme to your liking.

🚀 Installation

Using Cargo

cargo install soundscope

or

cargo install --git https://github.com/bananaofhappiness/soundscope

Precompiled Binaries

Grab the latest release for your platform from the Releases page.

🔧 Usage

• Run the tool using soundscope command
• Open the explorer by pressing E.
• Navigate to your audio file using arrow keys or H, J, K, L (Vim-style navigation).
• Press Enter to select it.
• Play or pause audio by pressing Space.
• Turn Mid and Side Frequencies on/of by pressing M and S respectively.
• Press L to check LUFS and F to check frequencies.
• Use the right and left arrow keys to move playhead 5 seconds forward or backward.
• Alternatively, press C to Change input mode from audio file to microphone.
• In microphone mode, choose Device using D.
• When you are done, press Q to quit.
• Change Theme by pressing T.

🎥 Demo Video

Watch the demo on YouTube.

🎨 Creating a custom theme

The theme is set in .theme file which must be placed in {YOUR_CONFIG_DIRECTORY}/soundscope directory. Under the hood it is a simple .toml file. Here is an example theme (which is default for the app) containing all possible variables:

[global]
background = "Black"
# It is default value for everything that is not a background
foreground = "Yellow"
# Color used to highlight corresponding characters
# Like highlighting L in LUFS to let the user know
# that pressing L will open the LUFS meter
highlight = "LightRed"

[waveform]
borders = "Yellow"
waveform = "Yellow"
playhead = "LightRed "# if not set, default is LightRed
# Current playing time and total duration
time = "Yellow"
# Buttons like <-, +, -, ->
controls = "Yellow"
# Color of a button when it's pressed
controls_highlight = "LightRed"
labels = "Yellow"

[fft]
borders = "Yellow"
# Frequencies and LUFS tabs text
labels = "Yellow"
axes = "Yellow"
axes_labels = "Yellow"
mid_fft = "Yellow"
side_fft = "LightGreen"

[lufs]
axis = "Yellow"
chart = "Yellow"
# Frequencies and LUFS tabs text
labels = "Yellow"
# Text color on the left
foreground = "Yellow"
# Color of the numbers on the left
numbers = "Yellow"

[devices]
background = "Black"
foreground = "Yellow"

[explorer]
background = "Black"
item_foreground = "Yellow"
highlight_item_foreground = "LightRed"
dir_foreground = "Yellow"
highlight_dir_foreground = "LightRed"

[error]
background = "Black"
foreground = "Yellow"
bordes = "Yellow"

Only global foreground and global background colors are mandatory. You can pass the HEX color code or use one of the predefined colors below:

- Black
- Red
- Green
- Yellow
- Blue
- Magenta
- Cyan
- Gray
- DarkGray
- LightRed
- LightGreen
- LightYellow
- LightBlue
- LightMagenta
- LightCyan
- White

Color separators -, _, and are supported and names are case insensitive. For example, Light-blue or light_blue or light Blue are all valid. After creating a theme into .theme file and placing it into {YOUR_CONFIG_DIRECTORY}/soundscope, press T to open up the theme selection list and choose yours.

🐛 Known Issues

• Microphone input analysis is slow on macOS (at least on mine).
• The programm may crash while opening files with length < 15 sec.
• After the playhead reaches the end of the file, the file needs to be reopened in order to be played again. This isn't a bug, but fixing it would be a useful quality‑of‑life (QoL) improvement.
• It works fine with stereo tracks but was not tested with tracks that have different number of channels.

🛣 Roadmap

• Zooming the Waveform in and out.
• Custom themes support.

🤝 Contributing

Pull Requests, Issues and Suggestions are welcome!

📜 License

This project is licensed under the MIT License — see LICENSE for details.

☕ Support

If you like soundscope and want to support its development:

• Boosty

Your support helps keep this project alive ❤️