Convert gsm to sd

Download and install the latest version of Filestar.
Right click on one or more Gsm file(s) on your desktop and select Convert with Filestar.
Type convert to sd in the search box.
Press Convert.

Or let an AI agent do it: filestarcli -i file.gsm -c "convert to sd" (how).

Let your AI agent convert GSM to SD

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the GSM files in my Downloads folder to SD”

Or run it yourself:

filestarcli -i file.gsm -c "convert to sd"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert GSM to SD?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.gsm -c "convert to sd" on your computer, so your files stay on it.

Using Filestar With AI Agents · Download SKILL.md

What is the difference between .gsm and .sd?

Name: GSM 06.10 Lossy Speech Compression; NIST SPHERE Audio File
Extension: .gsm; .sd
Format: Binary; Binary
Category: Audio; Audio
Developer: European Telecommunications Standards Institute (ETSI); NIST
Description: A lossy file format used to compress speech in Global Standard for Mobile (GSM) telecommunications. It is very effective for reducing audio file size. However, encoding and decoding audio signals severally is discouraged as the final product will have a lot of noise. Popular with some voice mail software but it is CPU intensive.; Waveform audio file in the NIST SPHERE format saved with the .sd extension, as NIST speech tools and speech-corpus distributions often name them; contains a recording used in speech recognition research.
MIME Type: audio/x-gsm; audio/x-nist-sph
Sample: sample.sd
Wikipedia: .gsm on Wikipedia

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