Codec2: GNU low-bitrate speech codec

Low bandwidth speech compression is a desirable concept for amateur radio enthusiasts. Unfortunately there isn’t a great open-source option out there, but that’s changing with the low-bitrate speech compression package called Codec2. It manages to transmit and decode at 2550 bits per second with results comparable to proprietary solutions like MELP and very near the initial goal of 2400 bit/s. [David Rowe], who spearheads the project, has been simulating communications using a Linux box and has posted audio snippets at the first link above for comparison. They’re looking for feedback and testing so if you interested give them a helping hand.

[Thanks Robomo]

Get started with speech recognition

Headset and microphone

Speech recognition makes it easier for us to be lazy with our devices – or perhaps set up the coolest voice-controlled project around. After the voice controlled home automation post, we received a lot of emails asking “how can I make it recognize my voice?”. Whether your project involves a PC or an Android phone, a high-budget, or no budget at all, there is a solution out there.  Join us after the break for a complete set of instructions on setting up speech recognition, and some of the best software options out there to meet your needs.

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Talking poker timer

This interesting box of buttons is a talking poker tournament timer. Full of useful tools like a binary time display, words of wisdom, countdowns to the end of the game, and even good old “bicycle built for two” mode (around 1:20).  While we find it fairly difficult to understand, we applaud the feature list, especially the song.  He used an Arduino with a voice shield, so there’s not much to the electronics side, but you can download his source code from his site.

[via Makezine]