Convert sd to htk

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

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

Let your AI agent convert SD to HTK

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 SD files in my Downloads folder to HTK”

Or run it yourself:

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

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 SD to HTK?

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

Using Filestar With AI Agents · Download SKILL.md

What is the difference between .sd and .htk?

Name: NIST SPHERE Audio File; Hidden Markov Model Toolkit File
Extension: .sd; .htk
Format: Binary; Binary
Category: Audio; Audio
Developer: NIST; Cambridge University's Speech Group.
Description: 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.; Single channel 16-bit PCM format used by HTK, a toolkit for building Hidden Markov Model speech processing tools.
MIME Type: audio/x-nist-sph; application/x-htk
Sample: sample.sd; sample.htk
Wikipedia: .htk on Wikipedia

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