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  ACQUA Extension Modules (ACOPT) Overview    ACOPT 32
ACOPT 32 – Speech-based Double Talk (Code 6859)
Double talk is a critical conversational situation and can impact echo cancellation and thus speech quality considerably. ACOPT 32, option Speech-based Double Talk, for the advanced communication quality analysis system ACQUA provides two speech-based methods for the measurement and analysis of double talk and classifies the performance of echo cancellers.
The first method is the Automated Double Talk Analysis according to ITU-T recommendation P.502.  In contrast to the previous analysis with Composite Source Signals (CSS), now also speech sequences according to ITU-T recommendation P.501 are applied. Also for the second analysis method, the Speech-based Double Talk Analysis according to 3GPP standard TS 26.132, real speech according to P.501 is used. These standards specify test methods to assess the acoustic characteristics of narrowband, wideband, superwideband and fullband terminals and the corresponding minimum performance requirements.
HEAD acoustics has implemented the analysis for double talk performance based on these standards.
„Speech-based Double Talk“ is available as license option ACOPT 32 for all variants of the communication analysis system ACQUA.
Note: All ACOPTs require the latest ACQUA version.
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