AP2700 v3.30 has an issue with the Import .wav File function, causing file truncation and frequency error correction problems. This can be corrected by replacing the DspRiff4.ocx file in the C:Program FilesCommon FilesAudio Precision folder with this version.
This issue has been corrected in AP2700 v3.30 SP1. We recommend that you download and install SP1 or later instead of just replacing this file, as it addresses some other issues as well as adds a driver for 64-bit versions of Windows.
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We regularly update our technical library with new materials, so be sure to check back for new audio test resources and information.