808
In doing so the coder 's performance during both mixed voicing speech and speech containing acoustic noise is greatly improved , producing soft natural sounding speech .
 coder, soft natural sounding speech; mixed voicing speech, coder; speech containing acoustic noise, coder
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 coder, soft natural sounding speech; mixed voicing speech, coder; speech containing acoustic noise, coder