The slides describe two speech coders operating at 1.9kbps and 2.4kbps. Below the reproduced speech achieved from these two speech coders are compared with a few speech coding standards.
The original speech waveform. Together with the MELP coder and the FS1016 CELP coder this speech file can be found at the DDVPC site which gives details about the recent selection of the new 2.4kbps speech coder. Click to hear demo.
The MELP coder, which was selected as the new 2.4kbps standard. Click to hear demo.
The FS1016 4.8kbps CELP speech coder. One of the aims of the new 2.4kbps standard was that it perform better than the FS1016. Click to hear demo.
The LPC-10e 2.4kbps speech coder. This is the speech coder the new
2.4kbps standard is designed to replace.
The source code for the speech coder can be found
Click to hear demo.
The 1.9kbps PWI-ZFE speech coder. Click to hear demo.
The 2.35kbps MMBE speech coder. Click to hear demo.
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