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新的通訊法規再再挑戰新的通訊終端,Wideband Speech
Coding技術已被發展且標準化,語音品質的測試也同樣面臨新的挑戰,也面臨最高的難度。簡單傳統的語音測試法規
:單向、頻響、響度早已不敷使用,高門檻法規,例如:VDF法規,HQS-IP法規,VDA法規,不只是辦識高品質手機的利器,更成為設計出優異語音品質的最佳輔助工具,一旦通過這些法規,無疑貼上正字標記,最佳品質保證.
HEAD acoustics從Conversation向度考量,提供最佳化設計之解決方案,探討Codec test,
Echo cancellation test, Double talk test, VDA test,
Switching test, Quality of background noise transmission,
Intelligibility, Sound Quality, Loudness Quality of
Background Noise Transmission, Delay and Echo, Double Talk
Capability, Switching and Echo Single Talk / Double Talk and
System Noise,TCLw... 等等 |