# KNIME Audio Nodes - Feature Extraction

**URL:** <https://forum.knime.com/t/knime-audio-nodes-feature-extraction/21688>\
**Category:** KCH Workflows\
**Created:** [March 11, 2020, 4:30am UTC](https://forum.knime.com/t/knime-audio-nodes-feature-extraction/21688 "2020-03-11T04:30:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Hub](https://forum-cdn.knime.com/user_avatar/forum.knime.com/hub/32/5438_2.png) [@Hub](https://forum.knime.com/u/Hub)\
**Post date:** [March 11, 2020, 4:30am UTC](https://forum.knime.com/t/knime-audio-nodes-feature-extraction/21688/1 "2020-03-11T04:30:23Z")

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This workflow shows the functionality of the KNIME Audio nodes - Read in audio files - Use speech-to-text services - Extract acoustic features - Visualize in interactive table Pleas note: - The CMUSphinx4 speech recognition service does not require any credentials - Bing and IBM Watson require access to the respective services and the corresponding credentials - The CMUSphinx4 SR node supports the use of custom language models. For more information, visit https://cmusphinx.github.io/wiki/tutoriallm/

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This is a companion discussion topic for the original entry at [https://kni.me/w/VRuz6-I\_MiQ\_HjEn](https://kni.me/w/VRuz6-I_MiQ_HjEn)