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CSP Voice Formats

Author’s note:  This article supports our legacy products.  At Inventive Labs, after two decades of providing telephony tools, we never stop supporting those who rely on our products to run their businesses.  We no longer recommend Dialogic. This article is for our customers who are using legacy equipment. For more information about these legacy products and where we are today, read  Ditch Dialogic & Convert to Voice Elements.

CSP Voice Formats

Depending on the architecture, CSP permits the following encoding when using CSP streaming.
This information is useful when selecting the correct format to use for speech recognition (i.e. when using the Microsoft LumenVox Speech Recognition Engine).

DM3 Formats

On DM3 you don’t have to play and stream the same format.

Streaming Formats

* G.711 mu-law PCM, 8 kHz sampling rate, 8-bit resolution (64 Kbps)
* G.711 A-law PCM, 8 kHz sampling rate, 8-bit resolution (64 Kbps)
* Linear PCM, 8 kHz sampling rate, 16-bit resolution little Endian and big Endian format (128 kbps)

Playing Formats

* G.711 mu-law PCM, 8 kHz sampling rate, 8-bit resolution (64 Kbps)
* G.711 A-law PCM, 8 kHz sampling rate, 8-bit resolution (64 Kbps)

Springware Formats

On Springware you must play and stream the same format.

Streaming And Playing Formats

* G.711 mu-law PCM, 8 kHz sampling rate, 8-bit resolution (64 kbps)
* G.711 A-law PCM, 8 kHz sampling rate, 8-bit resolution (64 kbps)
* Linear PCM, 8 kHz sampling rate, 8-bit resolution (64 kbps)
* OKI ADPCM, 8 kHz sampling rate, 4-bit resolution (32 kbps)

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